FR2840988A1 - Seal checking device for checking the sealing of pipes and valves for emptying road transport tankers has a venturi vacuum generation mechanism with means for monitoring a vacuum created in the tank outlet - Google Patents

Seal checking device for checking the sealing of pipes and valves for emptying road transport tankers has a venturi vacuum generation mechanism with means for monitoring a vacuum created in the tank outlet Download PDF

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Publication number
FR2840988A1
FR2840988A1 FR0207392A FR0207392A FR2840988A1 FR 2840988 A1 FR2840988 A1 FR 2840988A1 FR 0207392 A FR0207392 A FR 0207392A FR 0207392 A FR0207392 A FR 0207392A FR 2840988 A1 FR2840988 A1 FR 2840988A1
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France
Prior art keywords
valve
venturi
pipe
downstream valve
checking
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR0207392A
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French (fr)
Inventor
Andre Leonard
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to FR0207392A priority Critical patent/FR2840988A1/en
Publication of FR2840988A1 publication Critical patent/FR2840988A1/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/32—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid
    • B67D7/3209—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid relating to spillage or leakage, e.g. spill containments, leak detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals

Abstract

Device for rapid checking of the sealing of pipes and valves for emptying road transport tankers comprises a venturi connected between an upstream valve (3), a downstream valve (11) and a branch connection (15) to a pressure indicator (16) and a rapid coupling (12) to the outlet of a tanker. Connection of the device to a compressed air source generates a vacuum in the tank outlet pipe which is then maintained by closing of the downstream valve.

Description

Page 1 Appareil de controle rapide, de ltetancheite des vannes et desPage 1 Rapid inspection device, tightness of valves and

tuyauteriespiping

de vidange des camions citernes.for emptying tank trucks.

Cet appareil cree, rapidement, facilement et proprement, un vice d'air dans ['ensemble de la tuyauterie de vidange d'un camion citerne permettant de controler rapidement ltetancheite du clapet de fond de la citerne, de la tuyauterie de vidange ainsi que de la vanne, disposee a la sortie de cette tuyauterie. Toutes les canalisations de camions citernes, transportant de la matiere dangereuse liquide, vent pourvues de deux obturateurs de cette canalisation de vidange, l'un, compose d'un clapet dispose au fond de la citerne et l'autre, compose d'une vanne, dispose a la sortie de cette canalisation. Les innombrables manaeuvres, lors des chargements et dechargements, ainsi que l'agressivite des differents produits transportes, alterent les joints de ces obturateurs et peuvent provoquer de dangereuses fuites. Pour eviter cela, il convient de tester couramment l'etancheite de ces organes, soit en mettant en pressurisant la cuve, ou soit en deversant de l'eau dans celle-ci. Ces deux procedures comportent plusieurs inconvenients: - la mise en pression des grosses citernes est relativement longue et couteuse, puisqu'elle necessite, pour etre trop longue, la mise en aeuvre d'un gros compresseur d'air; - la mise en pression genere de la condensation a l'interieur de la cuve qui, pour certains produits, est tout a fait incompatible, obligent un sechage de la cuve apres ce genre de test;  This device creates, quickly, easily and cleanly, an air defect in the assembly of the drain piping of a tank truck allowing to quickly check the tightness of the bottom valve of the tank, the drain piping as well as the valve, disposed at the outlet of this piping. All tanker truck pipelines carrying liquid hazardous material, wind provided with two plugs for this drain pipe, one consisting of a valve at the bottom of the tank and the other consisting of a valve , has at the exit of this pipeline. The innumerable operations, during loading and unloading, as well as the aggressiveness of the various products transported, alter the seals of these shutters and can cause dangerous leaks. To avoid this, it is common to test the tightness of these organs, either by pressurizing the tank, or by pouring water into it. These two procedures have several disadvantages: - the pressurization of large tanks is relatively long and expensive, since it requires, to be too long, the implementation of a large air compressor; - the pressurization generates condensation inside the tank which, for certain products, is completely incompatible, obliges a drying of the tank after this kind of test;

- le test a lteau impose d'offce un sechage.  - the water test immediately requires drying.

Outre ces inconvenients, ces manccuvres vent laborieuses.  Besides these disadvantages, these maneuvers are laborious.

L' invention a pour but d'eviter ces inconvenients en mettant, rapidement, facilement et proprement, ['ensemble de la tuyauterie sous vice d'air et en verifiant la stabilite du vice de s'assurer de l'etancheite de cette partie sensible  The object of the invention is to avoid these drawbacks by quickly, easily and cleanly putting all of the piping under air defect and by checking the stability of the defect to ensure the tightness of this sensitive part.

du camion citerne.of the tank truck.

Pour atteindre son but, ['invention prevoit un venturi equipe: - d'une vanne d'amont, pouvant se raccorder rapidement a un reseau d'air comprime, dispose a l' entree du venturi, dans le sens d'ecoulement du fluide d'air; - d'une vanne d'aval, pourvue d'un raccord rapide, semblable a un raccord de pompier, pouvant s'accoupler rapidement a la canalisation de vidange  To achieve its goal, the invention provides a venturi fitted with: - an upstream valve, which can be quickly connected to a compressed air network, placed at the inlet of the venturi, in the direction of flow of the fluid d 'air; - a downstream valve, fitted with a quick coupling, similar to a fireman's coupling, which can be quickly coupled to the drain pipe

de la citerne et connectee a la chambre de vice de ce venturi.  from the tank and connected to the vice chamber of this venturi.

3 5 L' invention prevoit egalement une branche entre la vanne d'aval et le raccord rapide, pourvue d'un indicateur permettant de relever la valeur et la stabilite du vice L'appareil, objet de ['invention est caracterise en ce que un venturi est associe: - a une vanne d'amont; page 2 - a une vanne d'aval; - a un raccord rapide; - a une branche pourvue d'un indicateur; et a un raccord d'accouplement rapide, semblable a un raccord de pompiers; et en ce que cette branche et l' indicateur vent situes entre la vanne d' aval et le raccord rapide semblable a un accord de pompiers; et en ce que cet association est apte a generer, rapidement, proprement et facilement: - un vice d' air dans la canalisation de vidange d' une citerne de camion 1 0 citerne - a indiquer la valeur de ce vice; - a isoler cette canalisation de la pression atmospherique pour en verifier la stabilite du vice, de maniere a s'assurer de l'etancheite de cette partie sensible du camion citerne; - et a permettre un retour a la pression atmospherique de cette canalisation  The invention also provides a branch between the downstream valve and the quick coupling, provided with an indicator allowing the value and the stability of the defect to be noted. The apparatus, object of the invention is characterized in that a venturi is associated: - with an upstream valve; page 2 - has a downstream valve; - has a quick coupling; - has a branch provided with an indicator; and has a quick coupling fitting, similar to a fire engine fitting; and in that this branch and the wind indicator located between the downstream valve and the quick coupling similar to a firefighters' agreement; and in that this association is capable of generating, quickly, cleanly and easily: - an air defect in the drain pipe of a tanker of a truck 1 0 tanker - to indicate the value of this defect; - to isolate this pipe from atmospheric pressure to verify the stability of the defect, so as to ensure the tightness of this sensitive part of the tank truck; - and to allow a return to atmospheric pressure of this pipe

pour facilite la deconnexion de l'appareil.  to facilitate the disconnection of the device.

On decrit maintenant ['invention a propos du dessin annexe, dans lequel, l'appareil est represente ici, en position de connexion a la canalisation de la citerne. On a indique par 1, le reseau d'air comprime, par 2, le raccord rapide, permettant de se connecter rapidement sur le reseau d'air comprime, par 3, la vanne d'amont, fixee a ['entree 4, du venturi 5, par 6 le gicleur du venturi, par 7, le cone d'aspiration du venturi, par 8, la chambre de vice du venturi, par 9, la canalisation d'aspiration du venturi, par 10, l'echappement du venturi, par 11, la vanne d'aval, par 12, le raccord d'accouplement rapide, semblable a un raccord de pompiers, permettant la connexion de l'appareil a la canalisation de vidange 13 de la citerne 14, par 15, la branche sur laquelle est dispose l'indicateur de vice 16, par 17 la vanne de sortie de la canalisation 13, par 18  The invention will now be described with reference to the accompanying drawing, in which the apparatus is shown here, in the position of connection to the pipeline of the tank. We have indicated by 1, the compressed air network, by 2, the quick connector, allowing quick connection to the compressed air network, by 3, the upstream valve, fixed at the inlet 4, of the venturi 5, by 6 the nozzle of the venturi, by 7, the suction cone of the venturi, by 8, the vice chamber of the venturi, by 9, the suction pipe of the venturi, by 10, the exhaust of the venturi , by 11, the downstream valve, by 12, the quick coupling connector, similar to a fire engine connector, allowing the connection of the device to the drain pipe 13 of the tank 14, by 15, the branch on which is the indicator of vice 16, by 17 the outlet valve of the pipe 13, by 18

le clapet de fond de la citerne 14.the tank bottom valve 14.

On decrit maintenant le fonctionnement de ['invention.  The operation of the invention will now be described.

Lorsqu'un operateur desire s' assurer de l' etancheite d'un clapet de fond 18, ou d'une vanne de sortie 17 ou encore, d'une canalisation de vidange 13 d'une citerne 14, et apres avoir: - ferme le clapet de fond 18 accouple le raccord de connexion rapide 12 a la sortie de la canalisation de vidange du camion citerne a verifier, - connecte, l'appareil, objet de ['invention, a un reseau d'air comprime par son raccord rapide 2; il ouvre les vannes d'amont 3 et d'aval 11. L'air comprime penetre alors dans le venturi par le gicleur 6 et en ressort par ltechappement 10 en traversant le Page 3 cone de depression 7. En traversant ce cone, et par un phenomene bien connu, l'air comprime cree une depression dans la chambre 8 dans laquelle debouche la canalisation 9. Cette canalisation 9, communiquant avec: - la vanne d'aval 11; - la branche 15 et son indicateur 16;  When an operator wishes to ensure the tightness of a bottom valve 18, or of an outlet valve 17 or else, of a drain pipe 13 of a tank 14, and after having: - closed the bottom valve 18 couples the quick connection fitting 12 to the outlet of the drainage pipe of the tank truck to be checked, - connected, the device, object of the invention, to a compressed air network by its quick fitting 2; it opens the upstream 3 and downstream valves 11. The compressed air then enters the venturi through the nozzle 6 and exits through the exhaust 10 through the vacuum cone 7. By passing through this cone, and through a well-known phenomenon, compressed air creates a depression in the chamber 8 into which the pipe 9 opens. This pipe 9, communicating with: - the downstream valve 11; - the branch 15 and its indicator 16;

- et le raccord d'accouplement rapidel2.  - and the quick coupling fitting 2.

Ainsi, la depression creee dans la chambre 8, se transmet a toute la canalisation 13 et a l'indicateur 16, mettant de ce fait, tout cet ['ensemble sous vice. Lorsque le vice sonhaite est atteint, ltoperateur ferme la vanne d'aval 11, pour isoler totalement la canalisation 13, le clapet de fond 18 et l'indicateur 16, puis il ferme la vanne d'amont 3, pour arreter le fonctionnement de l'appareil. Pour s'assurer de ltetancheite du clapet de fond et de la canalisation, l'operateur verifie alors la stabilite de la valeur du vice, puis il repete ['operation pour tester la vanne de sortie 17, en ferment cette  Thus, the depression created in the chamber 8, is transmitted to all the pipe 13 and to the indicator 16, thereby putting all this ['assembly under vice. When the defect is reached, the operator closes the downstream valve 11, to completely isolate the pipe 13, the bottom valve 18 and the indicator 16, then closes the upstream valve 3, to stop the operation of the 'apparatus. To ensure the tightness of the bottom valve and the pipe, the operator then checks the stability of the value of the defect, then he repeats the operation to test the outlet valve 17, closing this

vanne et en ouvrant le clapet de fond 18.  valve and opening the bottom valve 18.

Lorsque ['operation est terminee, et si ['ensemble de la canalisation est etanche, il convient alors de la remettre a la pression atmospherique pour  When the operation is finished, and if the entire pipe is sealed, it should then be returned to atmospheric pressure to

faciliter la deconnexion de l'appareil.  facilitate the disconnection of the device.

Pour faciliter cette deconnexion, un developpement de ['invention qui en tient compte, prevoit une possibilite de retour a la pression atmospherique de la canalisation en ouvrant la vanne d'aval 11, permettant ainsi a l'air atmospherique de retourner dans la canalisation 13, en passant par l'echappement 10, le cone 7, la chambre de vice 8, la vanne d'aval 13 et le  To facilitate this disconnection, a development of the invention which takes this into account, provides for a possibility of returning to the atmospheric pressure of the pipeline by opening the downstream valve 11, thus allowing atmospheric air to return to the pipeline 13 , passing through the exhaust 10, the cone 7, the vice chamber 8, the downstream valve 13 and the

raccord de connexion rapide 12.quick connect fitting 12.

L'appareil, objet de ['invention, s'applique principalement aux camions  The device, object of the invention, mainly applies to trucks

26 citernes destines a transporter de la matiere dangereuse liquide.  26 tanks intended to transport liquid hazardous material.

Page 4Page 4

Claims (4)

-REVENDICATIONS-REVENDICATIONS 1) Appareil de contrO le rapide d ' etancheite d' un clapet de fond (18), d'une vanne de sortie (17) et d'une canalisation de vidange (13) d'un camion citerne, caracterise en ce qu'un venturi (5), est associe a une vanne d'amont (3), a une vanne d'aval (11), a une branche (15) pourvue d'un indicateur (16) et a un raccord (12), d'accouplement rapide, semblable a un raccord de pompiers, permettant une connexion de cet appareil a la sortie de la canalisation (13) d'un camion citerne, et en ce que cette association est apse: - a generer, rapidement, proprement et facilement, un vice d'air dans cette canalisation de vidange (13), lorsque l'appareil y est accouple et lorsqu'il est traverse par un flux d'air comprime, en vue de verifier ltetancheite de cette partie sensible du camion citerne; - et a isoler la canalisation (13), de la pression atmospherique, lorsque la  1) Apparatus for rapid control of a bottom valve (18), an outlet valve (17) and a drain pipe (13) of a tank truck, characterized in that a venturi (5), is associated with an upstream valve (3), a downstream valve (11), a branch (15) provided with an indicator (16) and a connector (12), quick coupling, similar to a fire engine connection, allowing a connection of this device to the outlet of the pipe (13) of a tank truck, and in that this association is suitable: - to generate, quickly, cleanly and easily, an air defect in this drain pipe (13), when the device is coupled to it and when it is crossed by a compressed air flow, in order to check the tightness of this sensitive part of the tank truck; - And to isolate the pipe (13) from atmospheric pressure, when the vanne d'aval (11) est fermee.downstream valve (11) is closed. 2) Appareil de contrble rapide d'etancheite, selon la revendication n l, caracterise en ce que l'ouverture de la vanne d'aval (11), permet, une communication du vice entre la chambre (8) du venturi (5) et la canalisation (13), lorsque le venturi est traverse par un flux d'air comprime et en ce que l'ouverture de cette vanne d'aval (11) permet un retour a la pression atmospherique de la canalisation (13), lorsque le venturi n'est pas traverse par  2) rapid sealing control device, according to claim nl, characterized in that the opening of the downstream valve (11) allows communication of the defect between the chamber (8) of the venturi (5) and the pipe (13), when the venturi is traversed by a compressed air flow and in that the opening of this downstream valve (11) allows a return to atmospheric pressure of the pipe (13), when the venturi is not crossed by un flux d'air comprime.a compressed air flow. 3) Appareil de controle rapide d'etancheite, selon la revendication n l, caracterise en ce que la branche (15) et l'indicateur (16)  3) rapid tightness control device, according to claim n l, characterized in that the branch (15) and the indicator (16) vent situes entre la vanne d'aval (11) et le raccord d'accouplement rapide (12).  located between the downstream valve (11) and the quick coupling fitting (12). 4) Appareil de contrGle rapide d'etancheite, selon la revendication n l, caracterise en ce qu'il s'applique principalement aux  4) rapid tightness control device according to claim n l, characterized in that it mainly applies to
FR0207392A 2002-06-14 2002-06-14 Seal checking device for checking the sealing of pipes and valves for emptying road transport tankers has a venturi vacuum generation mechanism with means for monitoring a vacuum created in the tank outlet Pending FR2840988A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0207392A FR2840988A1 (en) 2002-06-14 2002-06-14 Seal checking device for checking the sealing of pipes and valves for emptying road transport tankers has a venturi vacuum generation mechanism with means for monitoring a vacuum created in the tank outlet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0207392A FR2840988A1 (en) 2002-06-14 2002-06-14 Seal checking device for checking the sealing of pipes and valves for emptying road transport tankers has a venturi vacuum generation mechanism with means for monitoring a vacuum created in the tank outlet

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FR2840988A1 true FR2840988A1 (en) 2003-12-19

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FR0207392A Pending FR2840988A1 (en) 2002-06-14 2002-06-14 Seal checking device for checking the sealing of pipes and valves for emptying road transport tankers has a venturi vacuum generation mechanism with means for monitoring a vacuum created in the tank outlet

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800586A (en) * 1972-04-24 1974-04-02 Uson Corp Leak testing apparatus
US4888980A (en) * 1989-04-21 1989-12-26 Derome Raymond D Apparatus and method for testing, filling and purging closed fluid systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800586A (en) * 1972-04-24 1974-04-02 Uson Corp Leak testing apparatus
US4888980A (en) * 1989-04-21 1989-12-26 Derome Raymond D Apparatus and method for testing, filling and purging closed fluid systems

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