WO1991001238A1 - Heated tank car with discharge valve and pressure equalizer - Google Patents
Heated tank car with discharge valve and pressure equalizer Download PDFInfo
- Publication number
- WO1991001238A1 WO1991001238A1 PCT/US1990/000270 US9000270W WO9101238A1 WO 1991001238 A1 WO1991001238 A1 WO 1991001238A1 US 9000270 W US9000270 W US 9000270W WO 9101238 A1 WO9101238 A1 WO 9101238A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- container
- exchanger means
- discharge valve
- valve assembly
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D5/00—Tank wagons for carrying fluent materials
- B61D5/04—Tank wagons for carrying fluent materials with means for cooling, heating, or insulating
Definitions
- HEATED TANK CAR WITH DISCHARGE VALVE AND PRESSURE EQUALIZER Background of the Invention This invention relates to heated railway cars and more specifically to a novel heat exchanger positioned within a cavi in the tank isolated from the product and in which the heating coils are arranged to discharge steam and condensate into a nov torus encircling the discharge valve in an improved heat-exchan relation therewith to maintain the product in liquid state and thus assure free flow of the product during extreme freezing weather conditions particularly such as experienced in the far North climes. Discussion of the prior art The prior art is adequately discussed in my U.S.
- Patent 4,663,733 issued August 5, 1986 which is incorporated herein by reference, is a substantial improvement over the prior art and features a heater coil arrangement confined between a pair of complementary plates defining an envelope closed at opposite en and supported by brackets at its lateral edges attached to the shell of the car.
- This patent also discloses a sump which surrounds the outlet in heat exchange relation thereto. It has been found that the arrangement of the sump and its quick discharge, although better than the prior art, fails at times t obtain adequate heat transfer to the product discharge valve requiring the application of the hot steam externally of the shell in an attempt to unfreeze the valve. Depending upon weather conditions in the frozen north it would take hours of heating and sometimes it required hammering on the valve to clear it of the frozen product and start the product flowing.
- the structure of the heat exchangers in the prior art and the construction of the opposing plates is in applicants prior patent embracing heating coils has been costly and added undesirable excess weight to the cars.
- the disposition of the heaters is important in order to properly heat the product and control of the heating medium as it passes through the heater coils. It is desirable to extract maximum BTU's from the heating medium until it heating capability is spent before it is discharged onto the ground. Whereas the previous devices would dump condensate at about 200 degrees or much higher temperature, the improved structure retains the condensate in the torus, and preferably discharges it at about 140 degrees which, as is obvious, is much lower than previously thereby extracting more heat in the critical area namely in the region of the discharge nozzle to provide a favorable operating temperature.
- Fig. 1 is a top view of the invention shown partly in horizontal section; Fig.
- FIG. 2 is a vertical cross-section taken on line 2-2 of Fi lb; Fig. 3-is cross-section taken substantially on line 3-3 of Fig. 1; Fig. 4 is a cross-section taken on line 4-4 of Fig. 1; Fig. 5 is a enlarged cross-section of a portion of Fig. 4; Fig. 6 is a further enlarged cross-section of a portion of structure of Fig. 7; Fig. 7 is a top plain view with parts broken away and shown in section; Fig. 8 is a cross-section of Fig. 7; Fig. 9 is a further cross-section; Fig. 10 is a still further cross-section; Fig. 11-14 are still further cross-sections through the car body; Fig.
- FIG. 15 is an enlarged fragmentary plan view of the torus and surrounding structure
- Fig. 16 is a fragmentary vertical section taken substantially on line 16-16 of Fig. 15
- Fig. 17 is a vertical cross-section taken on line 17-17 of Fig. 15,
- Fig. 18 is a vertical cross-section through the torus and valve.
- the numeral 10 refers to a conventional railway tank car comprising a wheeled support 12 of conventional design.
- Storage container or tank 14 is mounted on the frame 12 by conventional structure such as by tank saddles 16.
- Tank 14 generally has a cylindrical configuration although the bottom 18 of the tank 14 slopes inwardly from the ends of tank heads 20 and 22 towards a discharge valve assembly generally designated 26.
- Heat exchanger 28 comprises heat exchanger units 30 and 3 which are identical except for being mirror images of each oth inasmuch as units 30 and 30' are identical, only unit 30 will described in detail with parts being indicated on unit 30' to indicate identical structure.
- Heat exchanger unit 30 comprises an arcuate or downwardly sloped top plate 32 having a plurality of U-shaped channels 36 secured, as by welding, at their open top sides to the undersid 37 of (Figs. 5 and 6) the plate 32 to. form passageways or coils or tubes for steam and condensate.
- the plate or wall 32 define with a torus wall portion 39 therebelow a thermal chamber 40 an is peripherally weld-connected to adjacent portions of the car tank body 33 and torus as at 42.
- the upper end of walls 32, 32 are welded to the tank heads 20, 22, respectively to provide th closed chambers 40.
- a pressure equalizer tube or pipe 44 is connected at one e to the chamber 40 through a connector 45 in a wall 33 of the ta and at its upper end is preferably connected through a fitting to the space 47 at the upper portion of the tank above the ladi 48.
- inlet nozzles or pipes 50, 50' which depend from the bottom of the tank at opposite sides of the outlet valve and these coupling nozzles connect to the inlet pipes 51, 51" respectively.
- the inlet pipes 51 and 51' are connected to the lower ends 52, 52' of the respective center tubes or inlet coil members 53, 53' .
- Each center tube 53 extends diagonally upwardly from the lading discharge nozzle 55a and has an upper end with a steam splitter 54 which connects to a transverse branch portion tube 55 intermediate its ends and the end portions thereof are connected to the upper ends 56, 57 of inner circulation tubes 58, 59 which slope downwardly and are respectively connected at their lower ends to transverse tubes 63, 64 to intermediate tubes 60, 61 which ascend from their lower portions to the respective ends of the car and are thereat connected at their upper ends by short tubes 65, 66 to outer end tubes 67, 68 which slope toward the center of the car.
- tubes 67, 68 which are connected to short transverse end tubes 69, 70 which are connected to outlet tubes 71, 71a of reduced cross-section with respect to the tubes to which they are connected to constrict the passage therethrough and reduce the flow of steam and condensate from the lower portions of tubes 60, 61 and 67, 68 which causes the steam and condensate to remain longer than usual in the heater tubes or coils so as. to maximize the heat absorption into the product.
- the disposition of the ends of the outlet tubes is of paramount importance in the provision of by-pass tubes 72, 74 which are connected between across tubes 63, 64 which extend between tubes 60, 67 and 61, 68 and the tubes 69, 70.
- the discharge or outlet end portions are secured with intervening-portions of a plate 76 to the lower end portion of the top plate 32.
- the plate 76 and the chamber plate and adjacent portion of the tank wall are welded leak proof and connected to provide an integral structure.
- the same construction of the torus as well as the mounting of the discharge tube end portions prevail at the opposite side of the torus which has an outer ring 80 and an inner cylindrica sleeve 81 defining the intervening cavity or chamber 73 which i defined by top and bottom integral or welded to walls 32, 33.
- a single outlet tube 84 is connected through a side openin at the lower end of the chamber 73 to discharge onto the ground ⁇ It will be observed that the steam and condensate circulating through the tubes of the heat exchanger in the advance runs and the respective return runs are connected at their lower ends to by pass tubes 63, 64 which lead to the outlet tubes connected to the discharge or outlet tubes. This feature insures that both condensate and steam invade the torus with a hot medium which normally would cool down if it all traversed through the entire length of tubing including the intermediate and outboard portions thereof.
- the intermediate and outboard or end tubes are now primarily filled with hot steam which flows faster and easier therethrough than when pushing a head of condensate in these tubes as occurs in the prior art.
- bypass tubes serve as separators or filter devices for separating a large proportion of the condensate from the steam so that all of it does not have to be pushed through the entire length of the tubing.
- This residual condensate is still hot preferably about 200 degrees F and is delivered through the outlet tubes into the top of a donut shaped housing or torus 26 into a chamber 73.
- the outlet pipes and their position at the lower end of the coils and in that tubes 72, 74 are inclined towards the center of car, the coils drain gravitationally, and the condensate being heavier than the steam, separates from the steam.
- the intermediate and end side tubes are in the present invention heated by the steam and a large quantity of condensate does not have to be pushed ahead of the steam in th last two conduits.
- the combinatio of what drains from the intermediate tubes into the outlet tub combined with what drains from end tubes preferably at a much higher temperature than previously at about 200 degrees wherea in the old system the temperature of the medium discharging in the outlet tubes was at a much lower temperature than previousl somewhere about 140 degrees. It will be understood that the temperature hereby indicated would vary with the temperature of the ambient air and that these temperatures are used in a comparable sense.
- the torus 26 or donut shaped vessel comprises an inner rin or tube 75 and an outer ring or tube 77.
- Rings 75, 77 are interconnected at their top edges 78, 80 by a plate 82 welded peripherally thereto.
- the inner edge of the plate 32 is welded to the top plate 82 and adjacent portions of the container wall or- shell.
- the top wall or plate 82 is recessed at its opposite sides to form pockets 85, 86 and the outlet tubes are bent downwardly as best seen in Figures 15 and 16 and drain in each bottom pock wall 72 within the confines thereof.
- the purpose of recessing the top of the torus is two fold. One is to obtain a low level for the outlet tubes to gravitationally drain and the second is to introduce the condensate into a constricted area 95 (Fig.
- the bottom of the chamber is closed off by the wall 40 of the shell of the tank.
- the lower edges of the inner and outer rings 75, 77 are weld-connected to a ring 98 which is shaped to provide good thermal conductivity. It has a frusto-conical upper end portion 100 with a large area sloping side surface 102 facing into the chamber 73 for obiation by the hot condensate.
- the hot condensate is minimally agitated and thus obtains a substantially laminar flow against surface 102 thus effecting maximum heat transfer to the ring 98 which has a center bore 104 in -axial .alignment with the center bore 106 of the torus, the bore 106 communicating at its upper end with the interior of the tank and providing an outlet for the product lading within the tank.
- the bottom of the ring 98 has an annular recess 108 which admits a radial flange 110 of a tubular body portion 112 of a discharge valve 114 which is diagramatically shown.
- the make of the valve is unimportant as long as the body portion thereof is // in intimate tight heat transfer contact with the thermal ring 9 which in the present instance has a thick body section 116.
- Th flange of the valve is secured within the recess in the ring by bolts 118 which extend through apertures 120 and are threaded into the body section of the ring 98 and draw the flange agains the bottom side of the ring and hold the radial edge in tight f engagement with the annular edge of the bottom recess in the he transfer ring.
- the valve is provided with an operating handle 132 (Fig. 18) .
- the lower end of the valve housing or mounting provided with a cap 135 threaded thereon and the discharge pipe 84 which is connected at its upper end through the tank shell t the discharge port 138 in the outer sleeve of the torus is also provided with a cap 140.
- a capped inspection tube 142 is connected to the bottom of the tank and the steam inlet pipes 50, 50* are connected to the lower closed off ends of the inlet tubes of the heat exchangers Pipes 50, 50' are provided with threaded connection, (not shown) (as is well known) for connection to the steam heater hose.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A railway car (10) heated by steam through a heat exchanger (28) located at the bottom (18) of a tank (14). The heat exchanger (28) comprises pipes (53, 58, 59, 60, 61, 67, 68) running lengthwise of the car (10). Bypasses (72, 74) are provided to discharge condensate into a cavity of a torus (26) sleeved about a discharge valve (114) in effective heat transfer thereto.
Description
HEATED TANK CAR WITH DISCHARGE VALVE AND PRESSURE EQUALIZER Background of the Invention: This invention relates to heated railway cars and more specifically to a novel heat exchanger positioned within a cavi in the tank isolated from the product and in which the heating coils are arranged to discharge steam and condensate into a nov torus encircling the discharge valve in an improved heat-exchan relation therewith to maintain the product in liquid state and thus assure free flow of the product during extreme freezing weather conditions particularly such as experienced in the far North climes. Discussion of the prior art The prior art is adequately discussed in my U.S. Patent 4,663,733 issued August 5, 1986 which is incorporated herein by reference, is a substantial improvement over the prior art and features a heater coil arrangement confined between a pair of complementary plates defining an envelope closed at opposite en and supported by brackets at its lateral edges attached to the shell of the car. This patent also discloses a sump which surrounds the outlet in heat exchange relation thereto. It has been found that the arrangement of the sump and its quick discharge, although better than the prior art, fails at times t obtain adequate heat transfer to the product discharge valve
requiring the application of the hot steam externally of the shell in an attempt to unfreeze the valve. Depending upon weather conditions in the frozen north it would take hours of heating and sometimes it required hammering on the valve to clear it of the frozen product and start the product flowing. Furthermore the structure of the heat exchangers in the prior art and the construction of the opposing plates is in applicants prior patent embracing heating coils has been costly and added undesirable excess weight to the cars. Furthermore it has been found the disposition of the heaters is important in order to properly heat the product and control of the heating medium as it passes through the heater coils. It is desirable to extract maximum BTU's from the heating medium until it heating capability is spent before it is discharged onto the ground. Whereas the previous devices would dump condensate at about 200 degrees or much higher temperature, the improved structure retains the condensate in the torus, and preferably discharges it at about 140 degrees which, as is obvious, is much lower than previously thereby extracting more heat in the critical area namely in the region of the discharge nozzle to provide a favorable operating temperature. The arrangement of the heating coils is such that at their discharge ends they are of reduced cross-section and provide a constriction to the outflow of condensate and thus retain the ho
condensate in a dwell period sufficient to maximize extraction the heat into the product without the introduction of complex controls which may be subject to breakdowns etc. The instant arrangement has for its further object the provision of a pressure balancing arrangement between the top o the tank car above the level of the product and the housing encasing the heating coils. These and other objects of the invention will become more readily apparent from the specification and the drawings wherei BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a top view of the invention shown partly in horizontal section; Fig. 2 is a vertical cross-section taken on line 2-2 of Fi lb; Fig. 3-is cross-section taken substantially on line 3-3 of Fig. 1; Fig. 4 is a cross-section taken on line 4-4 of Fig. 1; Fig. 5 is a enlarged cross-section of a portion of Fig. 4; Fig. 6 is a further enlarged cross-section of a portion of structure of Fig. 7; Fig. 7 is a top plain view with parts broken away and shown in section; Fig. 8 is a cross-section of Fig. 7; Fig. 9 is a further cross-section; Fig. 10 is a still further cross-section;
Fig. 11-14 are still further cross-sections through the car body; Fig. 15 is an enlarged fragmentary plan view of the torus and surrounding structure; Fig. 16 is a fragmentary vertical section taken substantially on line 16-16 of Fig. 15; Fig. 17 is a vertical cross-section taken on line 17-17 of Fig. 15, and Fig. 18 is a vertical cross-section through the torus and valve. DESCRIPTION OF THE INVENTION; The numeral 10 refers to a conventional railway tank car comprising a wheeled support 12 of conventional design. Storage container or tank 14 is mounted on the frame 12 by conventional structure such as by tank saddles 16. Tank 14 generally has a cylindrical configuration although the bottom 18 of the tank 14 slopes inwardly from the ends of tank heads 20 and 22 towards a discharge valve assembly generally designated 26. It is to this conventional tank car structure that the heat exchanger of this invention is mounted and which will- be referred to generally by the reference numeral 28.
Heat exchanger 28 comprises heat exchanger units 30 and 3 which are identical except for being mirror images of each oth inasmuch as units 30 and 30' are identical, only unit 30 will described in detail with parts being indicated on unit 30' to indicate identical structure. Heat exchanger unit 30 comprises an arcuate or downwardly sloped top plate 32 having a plurality of U-shaped channels 36 secured, as by welding, at their open top sides to the undersid 37 of (Figs. 5 and 6) the plate 32 to. form passageways or coils or tubes for steam and condensate. The plate or wall 32 define with a torus wall portion 39 therebelow a thermal chamber 40 an is peripherally weld-connected to adjacent portions of the car tank body 33 and torus as at 42. The upper end of walls 32, 32 are welded to the tank heads 20, 22, respectively to provide th closed chambers 40. A pressure equalizer tube or pipe 44 is connected at one e to the chamber 40 through a connector 45 in a wall 33 of the ta and at its upper end is preferably connected through a fitting to the space 47 at the upper portion of the tank above the ladi 48. Referring now to the heat exchanger tubing 30, 30' there a provided inlet nozzles or pipes 50, 50' which depend from the bottom of the tank at opposite sides of the outlet valve and these coupling nozzles connect to the inlet pipes 51, 51"
respectively. The inlet pipes 51 and 51' are connected to the lower ends 52, 52' of the respective center tubes or inlet coil members 53, 53' . Each center tube 53 extends diagonally upwardly from the lading discharge nozzle 55a and has an upper end with a steam splitter 54 which connects to a transverse branch portion tube 55 intermediate its ends and the end portions thereof are connected to the upper ends 56, 57 of inner circulation tubes 58, 59 which slope downwardly and are respectively connected at their lower ends to transverse tubes 63, 64 to intermediate tubes 60, 61 which ascend from their lower portions to the respective ends of the car and are thereat connected at their upper ends by short tubes 65, 66 to outer end tubes 67, 68 which slope toward the center of the car. The lower ends of tubes 67, 68 which are connected to short transverse end tubes 69, 70 which are connected to outlet tubes 71, 71a of reduced cross-section with respect to the tubes to which they are connected to constrict the passage therethrough and reduce the flow of steam and condensate from the lower portions of tubes 60, 61 and 67, 68 which causes the steam and condensate to remain longer than usual in the heater tubes or coils so as. to maximize the heat absorption into the product. The disposition of the ends of the outlet tubes is of paramount importance in the provision of by-pass tubes 72, 74 which are connected between across tubes 63, 64 which extend
between tubes 60, 67 and 61, 68 and the tubes 69, 70. Thus hot condensate is caused to flow into the- outlet tubes from tubes 5 61 into the outer tubes 71, .71a. In previous designs condensat and steam would be ported through the intermediate tubes 60, 61 and end or outboard tubes 67, 68. Thus the medium flowing through tubes 67, 68 is respectively cold (about 140 degrees ) the time it reaches the outlet tubes. The outflow in the presen design discharges the medium, which is at a substantially highe temperature than previously, preferably about 200 degrees F. I the present invention portions the outlet tubes 71, 71a are ben downwardly and extend into a recess 70a and are connected to a wall portion 72a, of an annular chamber 73 of a torus or annulu 26. The discharge or outlet end portions are secured with intervening-portions of a plate 76 to the lower end portion of the top plate 32. The plate 76 and the chamber plate and adjacent portion of the tank wall are welded leak proof and connected to provide an integral structure. The same construction of the torus as well as the mounting of the discharge tube end portions prevail at the opposite side of the torus which has an outer ring 80 and an inner cylindrica sleeve 81 defining the intervening cavity or chamber 73 which i defined by top and bottom integral or welded to walls 32, 33. A single outlet tube 84 is connected through a side openin at the lower end of the chamber 73 to discharge onto the ground
δ It will be observed that the steam and condensate circulating through the tubes of the heat exchanger in the advance runs and the respective return runs are connected at their lower ends to by pass tubes 63, 64 which lead to the outlet tubes connected to the discharge or outlet tubes. This feature insures that both condensate and steam invade the torus with a hot medium which normally would cool down if it all traversed through the entire length of tubing including the intermediate and outboard portions thereof. The intermediate and outboard or end tubes are now primarily filled with hot steam which flows faster and easier therethrough than when pushing a head of condensate in these tubes as occurs in the prior art. The bypass tubes serve as separators or filter devices for separating a large proportion of the condensate from the steam so that all of it does not have to be pushed through the entire length of the tubing. This residual condensate is still hot preferably about 200 degrees F and is delivered through the outlet tubes into the top of a donut shaped housing or torus 26 into a chamber 73. Inasmuch as the outlet pipes and their position at the lower end of the coils and in that tubes 72, 74 are inclined towards the center of car, the coils drain gravitationally, and the condensate being heavier than the steam, separates from the steam. Thus the intermediate and end side tubes are in the
present invention heated by the steam and a large quantity of condensate does not have to be pushed ahead of the steam in th last two conduits. Experiments have shown that the combinatio of what drains from the intermediate tubes into the outlet tub combined with what drains from end tubes preferably at a much higher temperature than previously at about 200 degrees wherea in the old system the temperature of the medium discharging in the outlet tubes was at a much lower temperature than previousl somewhere about 140 degrees. It will be understood that the temperature hereby indicated would vary with the temperature of the ambient air and that these temperatures are used in a comparable sense. The torus 26 or donut shaped vessel comprises an inner rin or tube 75 and an outer ring or tube 77. Rings 75, 77 are interconnected at their top edges 78, 80 by a plate 82 welded peripherally thereto. The inner edge of the plate 32 is welded to the top plate 82 and adjacent portions of the container wall or- shell. The top wall or plate 82 is recessed at its opposite sides to form pockets 85, 86 and the outlet tubes are bent downwardly as best seen in Figures 15 and 16 and drain in each bottom pock wall 72 within the confines thereof. The purpose of recessing the top of the torus is two fold. One is to obtain a low level for the outlet tubes to gravitationally drain and the second is to introduce the
condensate into a constricted area 95 (Fig. 17) to congest the condensate and fill the torus and maintain it filled and to obtain a greater dwell in the torus and the remaining chamber areas 96 and to maximize dissipation of heat from the condensate and to maintain laminar flow for efficient heat transfer to the encompassing parts. The bottom of the chamber is closed off by the wall 40 of the shell of the tank. The lower edges of the inner and outer rings 75, 77 are weld-connected to a ring 98 which is shaped to provide good thermal conductivity. It has a frusto-conical upper end portion 100 with a large area sloping side surface 102 facing into the chamber 73 for obiation by the hot condensate. Since the chamber portions 93 of chamber 73 are of enlarged cross-sectional areas, the hot condensate is minimally agitated and thus obtains a substantially laminar flow against surface 102 thus effecting maximum heat transfer to the ring 98 which has a center bore 104 in -axial .alignment with the center bore 106 of the torus, the bore 106 communicating at its upper end with the interior of the tank and providing an outlet for the product lading within the tank. The bottom of the ring 98 has an annular recess 108 which admits a radial flange 110 of a tubular body portion 112 of a discharge valve 114 which is diagramatically shown. The make of the valve is unimportant as long as the body portion thereof is
// in intimate tight heat transfer contact with the thermal ring 9 which in the present instance has a thick body section 116. Th flange of the valve is secured within the recess in the ring by bolts 118 which extend through apertures 120 and are threaded into the body section of the ring 98 and draw the flange agains the bottom side of the ring and hold the radial edge in tight f engagement with the annular edge of the bottom recess in the he transfer ring. The valve is provided with an operating handle 132 (Fig. 18) . The lower end of the valve housing or mounting provided with a cap 135 threaded thereon and the discharge pipe 84 which is connected at its upper end through the tank shell t the discharge port 138 in the outer sleeve of the torus is also provided with a cap 140. A capped inspection tube 142 is connected to the bottom of the tank and the steam inlet pipes 50, 50* are connected to the lower closed off ends of the inlet tubes of the heat exchangers Pipes 50, 50' are provided with threaded connection, (not shown) (as is well known) for connection to the steam heater hose. Experiments have shown that the construction herein disclosed is dramatically superior to the prior art structures i that not only is the product easily heated to readily discharge, but also the discharge valve is sufficiently heated so that it opens and closes practically effortlessly. The heating of the product from the bottom through the concave top plate of the hea exchanger obtains an extensive area of direct contact with the
.11 product and the application of the heat does not dissipate as in the prior art structures in unnecessarily heating parts which ar not located in strategic areas to heat the product. From the foregoing description it will be apparent that modifications can be made of the present invention without departing from the teachings of the invention. Also, it will be appreciated that the invention has a number of advantages, so of which have been specifically described and others are inherent in the invention. Accordingly the scope of the invention is onl to be considered as set forth in the accompanying claims.
Claims
I-
What is claimed is: 1. For use in a fluid lading carrying tank having a bod with a discharge duct, a heat exchanger for heating a congelab lading in said tank, said heat exchanger comprising a structure adapted to abu said discharge duct and having a plurality of longitudinally extending flow passages adapted to receive and conduct a heate medium, said structure extending substantially across the entire lower portion of said tank and being configured and inclined along longitudinal and transverse axes and defining a low area develop gravity drainage, said heat exchanger having an inlet and an outlet substantially encompassing in heat exchange relationship and disposed ad-jacent said discharge duct with the tank, said heat exchanger comprising a torus having a condensat receiving cavity for holding heated condensate about said duct. 2. A heated tank system comprising: a horizontally disposed lading container having opposite ends, and top and bottom portions, said lading container having at least an inlet and a discharge valve assembly, said discharg valve assembly being disposed in said bottom portion,
a heat exchanger means mounted within said container spaced above the bottom portion of said container and having an interio compartment for receiving a heated medium therein for heating th lading in said container above said heat exchanger means, said heat exchanger means having at least one inlet and at least one outlet in fluid communication therewith, said heat exchanger means being inclined downwardly along the longitudinal and transverse axes of said container, toward * said discharge valve assembly, said inlet and outlet being disposed near said discharge valve assembly, the spacing between said heat exchanger means and said bottom portion constituting torus connected to the outlet insulating said heat exchanger means from said bottom portion, said torus being in heat transfe relationship with said discharge valve assembly. 3. A heated tank system comprising: a horizontally disposed lading container having opposite ends, and top and bottom portions, said lading container having ' body with at least an inlet and a discharge valve assembly, said discharge valve assembly being disposed in said bottom portion, a heat exchanger means mounted within said container and spaced above the bottom portion of said container and forming an interior compartment with a portion of said body for receiving a heated medium therein for heating the lading in said container above said heat exchanger means,
IS said heat exchanger means having at least a pair of inlet-outlet openings in fluid communication therewith, said heat exchanger means extending downwardly substantia along a longitudinal axis extending from said ends to said discharge valve assembly and said heat exchanger means sloping substantially across the transverse axis of said container, outlet opening of said heat exchanger means being disposed substantially adjacent to and comprising an annular member integral with the discharge valve assembly encompassing relatio thereto and having a slow draining cavity connected with said outlet openings. 4. The invention of claim 3 wherein said heat exchanger means has a transverse downwardly bowed concave configuration including a single web extending subtending said tank. 5. The invention of claim 3 wherein said system includes wheeled support means for transporting the container. 6. The invention of claim 3, wherein the heated medium leaving said heat exchanger means passes heat through the discharge valve assembly prior to exiting from said unit outlet 7. The invention of claim 3 wherein the compartment of said heat exchanger means comprises a plate connected with the tank body and defining a chamber for receiving said heated medium.
8. The invention according to claim 3 wherein said container has opposite side walls extending between its ends, an wherein said heat exchanger means is supported on and secured to said side walls and said ends of said container whereby the flui lading carried by said container is supported by said heat exchanger means. 9. The invention according to claim 8 wherein said heat exchanger means includes support means attached to the lower portion of the container for supporting said heat exchanger mean above the bottom of the container said torus having an annular cavity therein and said outlet openings being connected with sai cavity and a single outlet in said torus. 10. The invention according to claim 3, wherein said heat exchanger means has a structure configured substantially across the entire -bottom portion of said lading. 11. The invention according to claim 10, wherein said heat exchanger means has a portion comprising said torus substantiall encompassing said discharge valve assembly for directing said heated medium to said discharge valve assembly. 12. The invention according to claim 3, wherein the compartment of said heat exchanger means comprises single top plate and coils integrated with the bottom of the plate peripherally sealed to the tank body.
\n 13. The invention according to claim 12, including a corrugated member forming said coils disposed in said compartm and defining said passages. 14. The invention according to claim 12, including a plurality of arcuate members adjoining said others and secured together by.an arcuate plate to define said passages. 15. The invention according to claim 12, including a plurality of spaced narrow half-rounded members secured betwee said top and bottom plates, the spaced members defining therebetween wide channels. 16. The invention according to claim 3, wherein said hea exchanger means comprises first and second heat exchanger unit positioned in said container in an end-to-end relationship. 17. The invention according to claim 16, wherein the discharge valve assembly is totally encompassed by the adjacen ends of the said first and second heat exchanger units via sai torus. 18.- In a heated railway tank car, means providing closed chambers at opposite ends of the c heating coils in each chamber, each coil having center, intermediate and outer legs, a drain at the bottom of the tank discharge means for discharging said coils conduit means connecting said intermedi position of said coils with the drain. 19. The invention according to claim 18, and
said drain comprising a valve heating exchanger. 20. The invention according to claim 19, and said valve heating comprising a valve awarding passage,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI920156A FI107037B (en) | 1989-07-14 | 1992-01-14 | Heated tank wagon with outlet valve and pressure equalizer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US380,096 | 1982-05-20 | ||
| US38009689A | 1989-07-14 | 1989-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1991001238A1 true WO1991001238A1 (en) | 1991-02-07 |
Family
ID=23499885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1990/000270 WO1991001238A1 (en) | 1989-07-14 | 1990-01-11 | Heated tank car with discharge valve and pressure equalizer |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU4969790A (en) |
| FI (1) | FI107037B (en) |
| WO (1) | WO1991001238A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7163115B2 (en) | 2002-09-20 | 2007-01-16 | Becton, Dickinson And Company | Roller bottle cap |
| RU2761059C1 (en) * | 2020-12-07 | 2021-12-02 | Ооо "Рейл1520 Ай Пи" | Method for manufacturing a tank boiler with a heating jacket and a tank boiler with a heating jacket |
| RU211622U1 (en) * | 2021-11-22 | 2022-06-16 | Общество с ограниченной ответственностью "РЕЙЛ1520 АЙ ПИ" | TANK CAR BOILER WITH PALLET |
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|---|---|---|---|---|
| US1370531A (en) * | 1916-11-11 | 1921-03-08 | Barber Asphalt Paving Co | Device for facilitating the unloading of tank-cars carrying bituminous materials |
| US1569605A (en) * | 1923-06-15 | 1926-01-12 | Horace W Ash | Tank-car heater |
| US3176764A (en) * | 1961-01-26 | 1965-04-06 | J B Beaird Company Inc | Integral tank shell heat-exchange coils |
| US3228466A (en) * | 1964-04-24 | 1966-01-11 | Union Tank Car Co | External heating arrangement for a storage tank |
| US3685458A (en) * | 1970-06-30 | 1972-08-22 | Gen America Transportation Cor | Railway tank car heating arrangement |
| US4476788A (en) * | 1982-06-07 | 1984-10-16 | Richard Loevinger | Heated railroad tank car |
| US4480370A (en) * | 1982-06-07 | 1984-11-06 | Loevinger Richard P | Heated railroad tank car |
| US4530288A (en) * | 1984-02-27 | 1985-07-23 | Loevinger Richard P | Heated railway tank car |
| US4603733A (en) * | 1982-12-30 | 1986-08-05 | Richard Loevinger | Heated railroad tank car |
| US4624189A (en) * | 1984-02-27 | 1986-11-25 | Loevinger Richard P | Heated outlet valve for railway tank car |
-
1990
- 1990-01-11 AU AU49697/90A patent/AU4969790A/en not_active Abandoned
- 1990-01-11 WO PCT/US1990/000270 patent/WO1991001238A1/en active IP Right Grant
-
1992
- 1992-01-14 FI FI920156A patent/FI107037B/en active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1370531A (en) * | 1916-11-11 | 1921-03-08 | Barber Asphalt Paving Co | Device for facilitating the unloading of tank-cars carrying bituminous materials |
| US1569605A (en) * | 1923-06-15 | 1926-01-12 | Horace W Ash | Tank-car heater |
| US3176764A (en) * | 1961-01-26 | 1965-04-06 | J B Beaird Company Inc | Integral tank shell heat-exchange coils |
| US3228466A (en) * | 1964-04-24 | 1966-01-11 | Union Tank Car Co | External heating arrangement for a storage tank |
| US3685458A (en) * | 1970-06-30 | 1972-08-22 | Gen America Transportation Cor | Railway tank car heating arrangement |
| US4476788A (en) * | 1982-06-07 | 1984-10-16 | Richard Loevinger | Heated railroad tank car |
| US4480370A (en) * | 1982-06-07 | 1984-11-06 | Loevinger Richard P | Heated railroad tank car |
| US4603733A (en) * | 1982-12-30 | 1986-08-05 | Richard Loevinger | Heated railroad tank car |
| US4530288A (en) * | 1984-02-27 | 1985-07-23 | Loevinger Richard P | Heated railway tank car |
| US4624189A (en) * | 1984-02-27 | 1986-11-25 | Loevinger Richard P | Heated outlet valve for railway tank car |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7163115B2 (en) | 2002-09-20 | 2007-01-16 | Becton, Dickinson And Company | Roller bottle cap |
| RU2761059C1 (en) * | 2020-12-07 | 2021-12-02 | Ооо "Рейл1520 Ай Пи" | Method for manufacturing a tank boiler with a heating jacket and a tank boiler with a heating jacket |
| RU211622U1 (en) * | 2021-11-22 | 2022-06-16 | Общество с ограниченной ответственностью "РЕЙЛ1520 АЙ ПИ" | TANK CAR BOILER WITH PALLET |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4969790A (en) | 1991-02-22 |
| FI920156A0 (en) | 1992-01-14 |
| FI107037B (en) | 2001-05-31 |
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