US2131270A - Storage tank - Google Patents

Storage tank Download PDF

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US2131270A
US2131270A US162127A US16212737A US2131270A US 2131270 A US2131270 A US 2131270A US 162127 A US162127 A US 162127A US 16212737 A US16212737 A US 16212737A US 2131270 A US2131270 A US 2131270A
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housing
valve
tank
storage tank
line
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US162127A
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James M Chittim
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0121—Propulsion of the fluid by gravity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0408—Level of content in the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0142—Applications for fluid transport or storage placed underground
    • F17C2270/0144—Type of cavity
    • F17C2270/0147—Type of cavity by burying vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0142—Applications for fluid transport or storage placed underground
    • F17C2270/0157—Location of cavity
    • F17C2270/016—Location of cavity onshore

Definitions

  • This invention relates to new and useful improvements in storage tanks and in particular to the dispensing and regulating means connected with said tanks.
  • Another object of the invention is to provide improved dispensing means for a storage tank wherein a suitable housing is provided for the dispensing means, said housing being easily removable without entailing any excavation.
  • a further object of the invention is to provide improved dispensing means for a storage tank wherein allowance is made for the surrounding earth to shift or settle without causing a fracture of, or putting an excess strain on, the supply pipe, and thereby occasioning a fire hazard by allowing the gas to escape.
  • a still further object of this invention is-to provide improved dispensing means for a storage tank wherein the various valves are mounted directly in a head instead of on pipes which would be liable to breaking and cracking, thus setting up a hazardous condition.
  • Another object of this invention is to provide improved dispensing means for a storage tank, having an inlet valve and a vapor valve, whereby a hose leading from the bottom of a portable fuel supply which is utilized to flll the underground tank, may be connected to the inlet valve, and another hose connected from the vaporvalve to the top of said supply tank,'thus setting up a vapor balance between the two tanks, which 7 enables a gravity feed to be used in fllling the storage tank and still allows no gas or vapor to...
  • Figure 1 is a side elevation of the device mounted on a storage tank
  • Figure 2 is an end view of the same with the housing broken away to show the interior construction
  • FIG. 3 is an enlarged sectional view taken on the line 3-3 of Figure 2
  • Figure 4 is a sectional view taken on the line 4-4 cf- Figure 2,
  • Figure 5 is an enlarged sectional view taken on 15 the line 5-5 of Figure 2
  • Figure 6 is an enlarged sectional view taken on the line 6-6 of Figure 4.
  • the numeral i0 designates an elongated cylindrical storage tank of the usual I0,
  • a flanged collar I2 is welded or other-- wise suitably mounted.
  • a cap plate l3, which 25 carrieselements to be described later, is secured to, the flanged collar by bolts ll.
  • Supporting bars- I! extend radially from the flange ofthe collar and have their inner ends secured thereto by the bolts I.
  • the lower end of a cylindrical housing I surrounds the flange I! of the collar l2 andthe cap plate l3, and has its upper end projecting slightly above the ground level when the tank is suitably situated in the ground.
  • the housing has angular retaining members i1 35 welded to its lower inner surface, which members' are located to rest upon the bars ii, to which theymay be fastened by bolts l8, whereby the housing It is suitably supported.
  • the housing has vertical 40 walls and is of suflicient diameter as to allow the ready removal of the cap plate I3'and its supported elements. Also by removing the bolts I! the housing itself may be removed if so desired.
  • a cover I! is secured to the housing by a hinge 20 and fastened by a hasp 2
  • the housing has an open bottom 22, whereby any water entering said housing may flow out.
  • notches Ii are provided in the wall of the housing at the upper end thereof and permit extending down in the tank.
  • the dispensing and regulating apparatus proper consists of a plurality of inlet and check valves, all mounted in the cap plate l3. This allows them to be serviced as a unit, and to be easily removed and replaced if desired. The whole unit consisting of the cap plate and valves may be removed and replaced with a similar unit. In this manner the gas supply is not cut off for any appreciable length of time.
  • the valves may be mounted in any convenient fashion but it is preferable to mount them as shown in the drawings.
  • An inlet or filler valve 30 is mounted on the cap plate, being threaded into a screw-threaded opening 3i in said plate.
  • a back flow check valve 32 is threaded into the bottom portion of the opening 3
  • the inlet valve is so constructed that when the hose from the supply truck (not shown) is placed thereon it will open the valve. Should the truck move during the filling operation, and break the hose, the back flow check valve 32 would automatically close when the gas started escaping and prevent any further loss. When the tank is not being filled these two valves are inactive and serve as a double seal against leakage.
  • a slip tube gauge 33 for indicating the liquid level in the tank is mounted in the plate l3 and has its tube 34 When these storage tanks are refilled, the filling is done by a gravity feed. Usually in cold weather there is a pressure differential between the service or supply tank and the storage tank which is mounted in the ground. For equalizing the pressure in the two tanks a vapor valve 35 is provided in the cap plate l3. A hose is connected from the bottom of the supply tank to the inlet valve, thereby opening the latter, and another hose is connected from the vapor valve to the top of the supply tank. Any pressure difference adjusts itself through the second hose, thus allowing the liquid to flow from the truck by gravity to the storage tank underground.
  • An excess flow check valve 38 is mounted in the same opening as the vapor valve 35, and extends into the tank. Should the second hose which is connected to the valve 35 break, any loss or escape of vapor would be prevented. It is pointed out that both the vapor valve 35 a and inlet valve 30 are manually operated and that both are normally in a closed position. A safety relief valve 36 is also provided to take care of any sudden increases in pressure which would exceed the safe operating pressure of the storage tank.
  • a supply line 39 leads from the cap plate l3 to conduct the gas to its point of use.
  • a valve 40 similar to the valve 38 is mounted on the inlet end of this line whereby, should the supply line break, the valve 40 would automatically cut off the vapor passing to the line and thus prevent the loss of gas.
  • is located in the supply line to allow the supply of gas to be shut ofi completely.
  • a regulator 42 of the diaphragm type is mounted in the supply line between the shut-off valve and the point of use and this regulator serves to keep the pressure constant at any predetermined range. If the pressure exceeds the range chosen as safe for operating conditions, a low-pressure valve (not shown) mounted within the diaphragm housing vents any excess pressure through an opening 42' until the excessive pressure has subsided.
  • the supply line leaving the regulator and passing through the side wall of the housing is of copper tubing and has a single loop or spiral therein.
  • the tubing being of copper, and having the loop, is of sufficient flexibility to allow considerable shifting and settling of the tank and housing without a fracture occurring. Also a disturbance such as an earthquake or nearby explosion would not crack the supply line and allow gas to escape.
  • the copper line is connected to the regulator by a coupling 43. By disconnecting this coupling and the bolts ll the cap plate and valves are easily removed.
  • Each of these valves is obtainable on the open market and is subject to variation. Each valve serves an individual and specific purpose as set out hereinbefore.
  • a mixture A of pea-gravel and sand at the bottom of the housing, as is shown in Figure 1, thereby preventing dirt from washing into the housing and insuring the proper drainage of water therefrom.
  • a storage and dispensing system for liquified gases including, a storage tank having an opening therein, a cover plate mounted in said opening, an inlet valve mounted in the cover. plate, a back flow check valve mounted on the cover plate below the inlet valve so that the two valves communicate, a vapor valve mounted on the cover plate, an excess flow check valve mounted on the cover plate below the vapor valve so that the two communicate, a safety valve mounted on said plate, a gauge mounted on said cover plate whereby the liquid level in the tank may be ascertained, a supply line leading from the cover plate, a pressure regulator mounted in the supply line, and an excess flow check valve mounted in the cover plate below the supply line so that the line and valve communicate.
  • a storage and dispensing system for liquified gases including, a storage tank having an opening therein, a cover plate mounted in said opening, an inlet valve mounted in the cover plate, a back flow check valve mounted on the cover plate below the inlet valve so that the two valves communicate, a vapor valve mounted on the cover plate, an excess flow check valve mounted on the cover plate below the vapor valve so that the two communicate, a safety valve mounted on said plate, a supply line leading from the cover plate, a pressure regulator mounted in the supply line, and an excess flow check valve mounted in the cover plate below the supply line so that the line and valve communicate.
  • a storage and dispensing system for liquified gases including a storage tank,” a removable housing on said tank, a cover for said housing, a service line extending into said housing, a support for the service line in said housing, controls in said housing also carried by said support and removable as a unit therewith, said housing having its lower portion provided with drainage means to allow water to pass therefrom, said housing having its upper portion beneath said cover provided with gas discharge means.
  • a storage dispensing system for liquified gas including a storage tank, an upstanding collar on said tank, a support on said collar, a housing for said support of larger diameter than said collar, a service line extending into said housing and carried by said support, controls also carmeans to permit egress of water from its lower portion and having its upper portion beneath said cover provided with gas discharge means.
  • a storage and dispensing system for liquified gas including a storage tank, an upwardly disposed portion extending from said tank, a plate closing said upwardly disposed portion, a service line extending above said plate, controls for admitting and releasing the contents of the 10 tank, said service line and controls being supported at least in part by said plate, a housing forming an enlarged extension of said upwardly disposed portion, said housing being supported at least in part by said upwardly disposed portion, a cover for said housing, said'housing being provided with drainage means to prevent escape of water from its lower portion and additional means for permitting escape of gas from its up-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Description

J. M. CHITTIM Sept. 27, 1938.
STORAGE TANK Filed Sept. 2, 1937 2 Sheets-Sheet l 21 dames MCNHim J. M. CHITTIM Sept. 27, 1938.
STORAGE TA'NK 2 Sheets-Sheet 2 Filed Sept. 2, 1937 I Z'H'UCMM dames M. Chiflim lines.
Patented Sept. 27, 1938 UNITED} STATES PATENT OFFICE s'ronnon TANK James M. 0111mm, sm Antonio, Tex. Application September 2,1937, Serial No. 162,127
5 Claims. I (01. 62-1) This invention relates to new and useful improvements in storage tanks and in particular to the dispensing and regulating means connected with said tanks.
In localities where natural gas is not" available from pipe lines, it is sometimes the practice to use a private storageta'nk, usually located underground, .wherein liquefied butane; propane, or a mixture of similar gases may be stored. A service line leads from thetank to the point of use, thus providing a gassupply similar to that provided by the aforementioned natural gas pipe For safety, these tanks are constructed with a number of valves and pipes which require attention to insure their proper operation.
It is one of the objects of this invention to provide improved dispensing means mounted on such a tank as described, wherein all the necessary valves and pipes are mounted on a single plate or head, so designed that the whole assembly may be removed as a unit, to be serviced or replaced.
Another object of the invention is to provide improved dispensing means for a storage tank wherein a suitable housing is provided for the dispensing means, said housing being easily removable without entailing any excavation.
A further object of the invention is to provide improved dispensing means for a storage tank wherein allowance is made for the surrounding earth to shift or settle without causing a fracture of, or putting an excess strain on, the supply pipe, and thereby occasioning a fire hazard by allowing the gas to escape.
A still further object of this invention is-to provide improved dispensing means for a storage tank wherein the various valves are mounted directly in a head instead of on pipes which would be liable to breaking and cracking, thus setting up a hazardous condition.
Another object of this invention is to provide improved dispensing means for a storage tank, having an inlet valve and a vapor valve, whereby a hose leading from the bottom of a portable fuel supply which is utilized to flll the underground tank, may be connected to the inlet valve, and another hose connected from the vaporvalve to the top of said supply tank,'thus setting up a vapor balance between the two tanks, which 7 enables a gravity feed to be used in fllling the storage tank and still allows no gas or vapor to...
escape to the open air.
A construction designed to carry out the invention will be hereinatfer described, together with other features of the invention.
The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, in which an-example of the invention is shown and wherein: i
' Figure 1 is a side elevation of the device mounted on a storage tank,
Figure 2 is an end view of the same with the housing broken away to show the interior construction,
Figure 3 is an enlarged sectional view taken on the line 3-3 of Figure 2,
Figure 4 is a sectional view taken on the line 4-4 cf-Figure 2,
Figure 5 is an enlarged sectional view taken on 15 the line 5-5 of Figure 2, and
Figure 6 is an enlarged sectional view taken on the line 6-6 of Figure 4.
In the drawings the numeral i0 designates an elongated cylindrical storage tank of the usual I0,
type used for underground storage of liquids. It is designed so as to rest on angular supports ii, and has a circular opening in its upper surface ll wherein a flanged collar I2 is welded or other-- wise suitably mounted. A cap plate l3, which 25 carrieselements to be described later, is secured to, the flanged collar by bolts ll. Supporting bars- I! extend radially from the flange ofthe collar and have their inner ends secured thereto by the bolts I. The lower end of a cylindrical housing I surrounds the flange I! of the collar l2 andthe cap plate l3, and has its upper end projecting slightly above the ground level when the tank is suitably situated in the ground. The housing has angular retaining members i1 35 welded to its lower inner surface, which members' are located to rest upon the bars ii, to which theymay be fastened by bolts l8, whereby the housing It is suitably supported. As will be seen in the drawings, the housing has vertical 40 walls and is of suflicient diameter as to allow the ready removal of the cap plate I3'and its supported elements. Also by removing the bolts I! the housing itself may be removed if so desired. A cover I! is secured to the housing by a hinge 20 and fastened by a hasp 2|, allowing it to be locked, whereby tampering may be guarded against. The cover prevents foreign matter and excess water from enteringthe housing and in- 50 juring the contents thereof. As is shown in Figlire '5, the housing has an open bottom 22, whereby any water entering said housing may flow out. Also, notches Ii are provided in the wall of the housing at the upper end thereof and permit extending down in the tank.
vapors which may accumulate within the housing to escape therefrom.
The dispensing and regulating apparatus proper consists of a plurality of inlet and check valves, all mounted in the cap plate l3. This allows them to be serviced as a unit, and to be easily removed and replaced if desired. The whole unit consisting of the cap plate and valves may be removed and replaced with a similar unit. In this manner the gas supply is not cut off for any appreciable length of time.
The valves may be mounted in any convenient fashion but it is preferable to mount them as shown in the drawings. An inlet or filler valve 30 is mounted on the cap plate, being threaded into a screw-threaded opening 3i in said plate. A back flow check valve 32 is threaded into the bottom portion of the opening 3|. The inlet valve is so constructed that when the hose from the supply truck (not shown) is placed thereon it will open the valve. Should the truck move during the filling operation, and break the hose, the back flow check valve 32 would automatically close when the gas started escaping and prevent any further loss. When the tank is not being filled these two valves are inactive and serve as a double seal against leakage. A slip tube gauge 33 for indicating the liquid level in the tank is mounted in the plate l3 and has its tube 34 When these storage tanks are refilled, the filling is done by a gravity feed. Usually in cold weather there is a pressure differential between the service or supply tank and the storage tank which is mounted in the ground. For equalizing the pressure in the two tanks a vapor valve 35 is provided in the cap plate l3. A hose is connected from the bottom of the supply tank to the inlet valve, thereby opening the latter, and another hose is connected from the vapor valve to the top of the supply tank. Any pressure difference adjusts itself through the second hose, thus allowing the liquid to flow from the truck by gravity to the storage tank underground. An excess flow check valve 38 is mounted in the same opening as the vapor valve 35, and extends into the tank. Should the second hose which is connected to the valve 35 break, any loss or escape of vapor would be prevented. It is pointed out that both the vapor valve 35 a and inlet valve 30 are manually operated and that both are normally in a closed position. A safety relief valve 36 is also provided to take care of any sudden increases in pressure which would exceed the safe operating pressure of the storage tank.
A supply line 39 leads from the cap plate l3 to conduct the gas to its point of use. A valve 40 similar to the valve 38 is mounted on the inlet end of this line whereby, should the supply line break, the valve 40 would automatically cut off the vapor passing to the line and thus prevent the loss of gas. A manual shut-off valve 4| is located in the supply line to allow the supply of gas to be shut ofi completely. A regulator 42 of the diaphragm type is mounted in the supply line between the shut-off valve and the point of use and this regulator serves to keep the pressure constant at any predetermined range. If the pressure exceeds the range chosen as safe for operating conditions, a low-pressure valve (not shown) mounted within the diaphragm housing vents any excess pressure through an opening 42' until the excessive pressure has subsided. The supply line leaving the regulator and passing through the side wall of the housing is of copper tubing and has a single loop or spiral therein. The tubing being of copper, and having the loop, is of sufficient flexibility to allow considerable shifting and settling of the tank and housing without a fracture occurring. Also a disturbance such as an earthquake or nearby explosion would not crack the supply line and allow gas to escape. The copper line is connected to the regulator by a coupling 43. By disconnecting this coupling and the bolts ll the cap plate and valves are easily removed.
Each of these valves is obtainable on the open market and is subject to variation. Each valve serves an individual and specific purpose as set out hereinbefore. When the tank and housing is suitably buried in the ground it is desirable to place a mixture A of pea-gravel and sand at the bottom of the housing, as is shown in Figure 1, thereby preventing dirt from washing into the housing and insuring the proper drainage of water therefrom.
What I claim and desire to secure by Letters Patent is:
1. A storage and dispensing system for liquified gases, including, a storage tank having an opening therein, a cover plate mounted in said opening, an inlet valve mounted in the cover. plate, a back flow check valve mounted on the cover plate below the inlet valve so that the two valves communicate, a vapor valve mounted on the cover plate, an excess flow check valve mounted on the cover plate below the vapor valve so that the two communicate, a safety valve mounted on said plate, a gauge mounted on said cover plate whereby the liquid level in the tank may be ascertained, a supply line leading from the cover plate, a pressure regulator mounted in the supply line, and an excess flow check valve mounted in the cover plate below the supply line so that the line and valve communicate.
2. A storage and dispensing system for liquified gases including, a storage tank having an opening therein, a cover plate mounted in said opening, an inlet valve mounted in the cover plate, a back flow check valve mounted on the cover plate below the inlet valve so that the two valves communicate, a vapor valve mounted on the cover plate, an excess flow check valve mounted on the cover plate below the vapor valve so that the two communicate, a safety valve mounted on said plate, a supply line leading from the cover plate, a pressure regulator mounted in the supply line, and an excess flow check valve mounted in the cover plate below the supply line so that the line and valve communicate.
3. A storage and dispensing system for liquified gases including a storage tank," a removable housing on said tank, a cover for said housing, a service line extending into said housing, a support for the service line in said housing, controls in said housing also carried by said support and removable as a unit therewith, said housing having its lower portion provided with drainage means to allow water to pass therefrom, said housing having its upper portion beneath said cover provided with gas discharge means.
4. A storage dispensing system for liquified gas including a storage tank, an upstanding collar on said tank, a support on said collar, a housing for said support of larger diameter than said collar, a service line extending into said housing and carried by said support, controls also carmeans to permit egress of water from its lower portion and having its upper portion beneath said cover provided with gas discharge means.
5. A storage and dispensing system for liquified gas including a storage tank, an upwardly disposed portion extending from said tank, a plate closing said upwardly disposed portion, a service line extending above said plate, controls for admitting and releasing the contents of the 10 tank, said service line and controls being supported at least in part by said plate, a housing forming an enlarged extension of said upwardly disposed portion, said housing being supported at least in part by said upwardly disposed portion, a cover for said housing, said'housing being provided with drainage means to prevent escape of water from its lower portion and additional means for permitting escape of gas from its up-
US162127A 1937-09-02 1937-09-02 Storage tank Expired - Lifetime US2131270A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442156A (en) * 1944-06-15 1948-05-25 Southern Steel Co Valve unit for liquefied petroleum gas systems
US2623362A (en) * 1948-07-19 1952-12-30 Smith Corp A O Valve fitting for liquefied gas systems
US5099894A (en) * 1989-08-23 1992-03-31 Mozeley Jr David R Spill containment and flex hose protection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442156A (en) * 1944-06-15 1948-05-25 Southern Steel Co Valve unit for liquefied petroleum gas systems
US2623362A (en) * 1948-07-19 1952-12-30 Smith Corp A O Valve fitting for liquefied gas systems
US5099894A (en) * 1989-08-23 1992-03-31 Mozeley Jr David R Spill containment and flex hose protection device

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