CS261439B1

CS261439B1 - Emergency valve

Info

Publication number: CS261439B1
Application number: CS875365A
Authority: CS
Inventors: Emil Bozik
Original assignee: Emil Bozik
Priority date: 1987-07-15
Filing date: 1987-07-15
Publication date: 1989-02-10
Also published as: CS536587A1

Abstract

Riešenie sa týká havarijného ventila umožňujúceho riadenie rýchlosti úniku kvapaliny z pracovného mechanizmu, v ktorom je ventil použitý. Havarijný ventil pozostáva z telesa uloženého vo vedení tlakovej kvapaliny a opretého o čelo skrutkovania. Zo strany skrutkovania je v prvom valcovom vybraní telesa umiestnená kruhová uzatváracia doska opretá svojim čelom a pevnú plochu telesa a pevne spojená s kolíkom posuvno uloženým v telese. Kolík je spriahnutý s pružinou, ktorá sa jedným koncom opiera o teleso a druhým koncom cez podložku o matice naskrutkované na konci kolíka. Podstata riešenia je v tom, že teleso havarijného ventila je nekruhového, s výhodou štvorhranného prierezu a je svojim vodiacim priemerom uložené vo vnútornom vybraní vedenia. Priemer vnútorného Vybrania je vačší ako priemer kruhovej uzatváracej došky. Medzi stěnami telesa a priemerom vnútorného vybrania sú vytvořené prietokové prierezy, ktorú sú přepojené s prvým válcovým vybráním vytvořeným z prvej čelnej strany telesa a s druhým válcovým vybráním vytvořeným z druhej čelnej strany telesa. V kruhovej uzatváracej doske je vytvořený aspoň jeden prepúšťací otvor.The solution relates to an emergency valve enabling control of the rate of fluid leakage from the working mechanism in which the valve is used. The emergency valve consists of a body placed in the pressure fluid line and supported by the screwing face. On the screwing side, a circular closing plate is placed in the first cylindrical recess of the body, supported by its face and the solid surface of the body and firmly connected to a pin slidably mounted in the body. The pin is coupled to a spring, which rests with one end on the body and with the other end through a washer on nuts screwed onto the end of the pin. The essence of the solution is that the body of the emergency valve is non-circular, preferably of square cross-section, and is placed with its guide diameter in the inner recess of the line. The diameter of the inner recess is larger than the diameter of the circular closing plate. Flow cross-sections are formed between the walls of the body and the diameter of the inner recess, which are connected to a first cylindrical recess formed from the first end face of the body and to a second cylindrical recess formed from the second end face of the body. At least one through-hole is formed in the circular closing plate.

Description

IAND

Vynález sa týká konštrukčného riešeniahavarijného ventila umožňujúceho ríadeníerýchlosti úniku kvapaliny z pracovného me-chanizmu, v ktorom je ventil použitý.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a design of an emergency valve enabling the rate of leakage of fluid from the working mechanism in which the valve is used.

Havarijně ventilý slúžia na riadenie kon-trolovaného spúšťania pracovného mecha-nizmu pri deštrukcii hydraulického vedeniamedzi hydromotorom a riadiacim rozvádza-čom pracovného mechanizmu. Majů teda priprasknutí prívodnej trubky, hadice alebo přiinom okamžitom úniku tlakovej kvapalinyzabezpečit jizatvorenie prietofcu, resp. jehozmenšenie na požadovaná hodnotu. Známyje havarijný ventil, ktorého teleso má napovrchu hladká válcová plochu, ktorou sanalisuje do potrubia. V střede prstencovéhovybrania je v telese kuželový výstupok, kto-rý je obopnutý elastickým tesniacim krúž-kom. Pri náhlom úniku tlakovej kvapalinysa tento tesniaci krúžok odvalí cez rozširu-júci sa kuželový náběh do prstencového vy-brania, čím uzavrie prietok kvapaliny. Na-kol'ko však potřebné roztíahnutie a pre-miestnenie tesniaceho krúžku si vyžadujepoměrně dlhý čas ,nezabezpečuje takéto rie-šenie rýchle a spolahlivé uzatvorenie prie-toku a už vonkoncom neumožňuje nastave-nie rýchlosti klesania pracovného mecha-nizmu. Naviac funkčná spolehlivost ventilaje závislá na životnosti tesniaceho krúžku,ktorá je dost problematická. Nevýhodná jetiež výrobná náročnost vyplývajúca z nut-nosti výroiby kuželového telesa pre vedemetesniaceho krúžku, ktoré má na konci ešteprírubu. Problematická je tiež montáž, lebotesniaci krúžok musí byť roztiahinutý a na-sunutý na kuželové teleso cez prírubu. Zná-my je tiež havarijný ventil pozostávajúci ztelesa, na povrchu ktorého je vytvořený zá-vit. Z jednej strany telesa sú navrtané otvo-ry vyústujúce do vybrania vytvořeného zdruhej strany telesa. V strednej časti telesaje upevněný čap, po ktorom sa prostred-níctvom pružiny, resp. tlaku kvapaliny pre-súva doska, tvoriaca uzatváraciu část ven-tila. Pohyb došky je obmedzený párom ma-tic, ktoré sú na čapě nasktrutkované. Prináhlom poklese tlaku sa doska presunie načelo telesa a uzatvorí prietok kvapaliny.Toto riešenie sice plní požiadavky kladenéna havarijný ventil, ale neumožňuje nasta-vit rýchlosť klesania pracovného mechaniz-mu. Nevýhodné je tiež to, že nutnost výrobyzávitu na telese a pomernej dlhej časti zá-vitu na protikuse, daná sposobom montáževentila do zariadenia, vytvára technologic-ky poměrně nevýhodná a zložitú operáciu.Výrobu zdražuje aj vřtanie oťvorov do tele-sa. Ďalšie známe havarijně ventily sú kon-strukčně zložité a všeobecne neriešia pro-blém klesania pracovného mechanizmu.The emergency valves serve to control the controlled actuation of the working mechanism in the destruction of the hydraulic line through the hydraulic motor and the control mechanism of the working mechanism. Thus, they have to crack the inlet pipe, hose, or instantly leak the pressure fluid to ensure the opening of the flow pipe, respectively. its reduction to the desired value. An emergency valve is known, the body of which has a surface-smooth cylindrical surface, by which it is squeezed into the pipe. In the center of the annular recess there is a conical projection in the body, which is encircled by an elastic sealing ring. When the pressure fluid leaks suddenly, this sealing ring rolls over the expanding conical ramp into the annular removal, thereby closing the liquid flow. However, the necessary expansion and displacement of the sealing ring requires a relatively long time, does not provide such a solution for a fast and reliable closing of the flow, and no longer allows the rate of descent of the working mechanism to be set. In addition, the functional reliability of the valve depends on the life of the sealing ring, which is quite problematic. The disadvantage is also the production demands resulting from the necessity of making a conical body for a ring that has a flange at the end. Mounting is also problematic, the crank ring must be extended and pushed onto the tapered body through the flange. Also known is an emergency valve comprising a shell, on the surface of which a plug is formed. From one side of the body, holes are tapped into the recess formed by the second side of the body. A pin is fixed in the central part of the body, after which a spring, respectively, is provided by means of a spring. the pressure of the fluid passing through the plate forming the closure portion. The movement of thatch is limited by a pair of bolts screwed on the bolt. By relieving the pressure drop, the plate moves to the body and closes the fluid flow. While this solution meets the requirements of the emergency valve, it does not allow the working mechanism to drop. It is also disadvantageous that the necessity of producing a body on the body and a relatively long part of the counterpart, due to the method of fitting the device into the device, creates a relatively disadvantageous and complicated operation. Other known emergency valves are structurally complex and generally do not solve the problem of sinking the working mechanism.

Uvedené nevýhody odstraňuje havarijnýventil pozostávajúci z telesa uloženého vovedení tlakovej kvapaliny a opretého o čeloskrutkovania zo strany ktorého je v prvomvalcovom vybraní telesa umiestnená kruho-vá uzatváracia doska opretá svojim čelom o pevnú plochu telesa a pevne spojená s ko-líkom posuvné uloženým v telese a spriá-hnutým s pružinou, ktorá sa jedným kon-com opiera o telesoi a druhým koncom cezpodložku o matice naskrutkované na koncikolíka podl'a vynálezu, ktorého podstataspočívá v tom, že teleso havarijného ventilaje nekruhového prierezu a je svojim vodia-cim priemerom uložené vo vnútornom vy-braní vedenia, ktorého priemer je vačší akopriemer kruhovej uzatváracej došky, pričommedzi stěnami telesa a priemerom vnútorné-ho vybrania vedenia sú vytvořené prietokovéprierezy, ktoré sú přepojené s prvým válco-vým vybráním vytvořeným z prvej čelnejstrany telesa a s druhým válcovým vybrá-ním vytvořeným z druhej čelnej strany tele-sa. Teleso je s výhodou štvorhranného prie-rezu. V kruhovej uzatváracej doske je vy-tvořený aspoň jeden prepúšťací otvor. Výhodu havarijného ventila pódia vyná-lezu je najmá menej prácna výroba, jedno-duchá montáž a vysoká spolehlivost. Ďal-šou výhodou takto vytvořeného ventila jeto, že umožňuje riadiť rýchlosť úniku kva-paliny z příslušeného mechanizmu, v kto-rom je použitý a tým zabezpečit aj jeho po-stupné klesanie do základnej polohy.The above-mentioned drawbacks are eliminated by an accidental valve consisting of a body of pressure fluid bearing supported against a screw-on screwing from which a circular closing plate supported by its face against a fixed surface of the body is fixed in the body-shaped recess and firmly connected to the cage movable in the body and spoke driven by a spring which is supported by one end on the body and the other end via a nut nut bolted to a conical collar according to the invention, which consists in that the ventilator body is of non-circular cross-section and is guided in its internal diameter flow lines which are interconnected with the first cylindrical recess formed from the first front face of the body and with the second cylindrical recess formed from the second recess formed by the first recess of the body and the second cylindrical recess formed from the second recess of the body and the second cylindrical recess formed from the second recess of the body and the second recess formed from the second recess are formed by taking the conduit, the diameter of which is greater than the diameter of the circular closure; the front of the tele-sa. The body is preferably a quadrilateral section. At least one passage opening is formed in the annular closure plate. The advantage of the inventive emergency valve is less labor intensive production, simple assembly and high reliability. A further advantage of the valve thus formed is that it allows the rate of leakage of liquid from the associated mechanism to be controlled, and thus to ensure its gradual descent to the base position.

Na pripojenom výkrese je znázorněnýpříklad vyhotovenia havarijného ventila po-dlá vynálezu, kde je na obr. 1 pozdlžny rezhavarijným ventilom zabudovaným vo ve-dení tlakovej kvapaliny a na obr. 2 čelnýpohlad na havarijný ventil z obr. 1 pri po-hlade z 1'avej strany.In the accompanying drawing, an example of an embodiment of the emergency valve according to the invention is shown, where in Fig. 1 is a longitudinal resistor valve incorporated in the pressure fluid guide and in Fig. 2 a front view of the emergency valve of Fig. parties.

Havarijný ventil pozostáva z telesa 1štvorhranného prierezu, ktoré je svojim vo-diacim prierezom 2 vytvořeným presústru-žením hrán štvorhranu vložené do vnútor-ného vybrania vedenia 10 tlakovej kvapa-liny. Poloha telesa 1 vo vedení 10 je zaiste-ná pomocou skrutkovania 12, ktoré sa svo-jím Čelom 14 opiera o teleso í. Zo stranyskrutkovania 12 je v prvom valcovom vybra-ní 3 telesa 1 umiestnená kruhová uzatvára-cía doska 8 opatřená jedným prepúšťacímotvorom 15 a opierajúca sa svojim čelomo pevnú plochu 11 telesa 1. Kruhová uza-tváracía doska 8 je pevne spojená s koli-kám 7 posuvné uloženým v telese 1 a sprla-hnutým s pružinou 6, ktorá sa jedným kon-com opiera o teleso 1 a druhým koncom cezpodložku 9 vedenú svojim vonkajším prie-merom v telese 1 o matice 10 naskrutkova-né na konci kolíka 7. Matice 10 sú umiest-nené v priestore druhého válcového vybra-nia 4 telesa I. jednou z podmienok správ-nej činnosti havarijného ventila je, abyvonkajší priemer uzatváracej došky 8 bolváčší ako vnútorný priemer skrutkovania 12.The emergency valve consists of a body of a rectangular cross-section that is inserted into the internal recess of the pressure drop line 10 by its free-cutting cross-section 2 formed by a square edge displacement. The position of the body 1 in the guide 10 is secured by means of a screwing 12, which is supported by the face 14 on the body. A circular closing plate 8 is provided in the first cylindrical recess 3 of the body 1, which is provided with one passage opening 15 and supports a fixed surface 11 of the body 1 in its first face by means of a screwing 12. which is supported in one body 1 by a spring 6 which is supported by one end on the body 1 and by the other end by a pad 9 guided by its outer diameter in the body 1 by nut 10 screwed at the end of the pin 7. located in the space of the second cylindrical recess 4 of the body I, one of the conditions of the proper operation of the emergency valve is to make the outer diameter of the closing dock 8 more oblique than the inner diameter of the screwing 12.

Počas prevádzky prúdi tlaková kvapalina,napr. v smere šípky K a tlak z oboch stráňhavarijného ventila je rovnaký. Pružina 6pritláča kruhová uzatváraciu došku 8 k pev-nej ploché 11 telesa 1. Cez havarijný ventilDuring operation, the pressurized fluid, e.g. in the direction of the arrow K, and the pressure from both of the gate valves is the same. Spring 6 presses round closing closure 8 to fixed flat 11 body 1. Over emergency valve

Claims

281430 5 then pressurized fluid flows from the first cylindrical recess 3 into the flow cross-sections 5 formed between the outer walls of the body 1 and the diameter of the inner recess 1S and then flows into the second cylindrical recess 4. In case of failure caused by for example by rupture of the hose or other sudden leakage of pressure fluid, a pressure drop of 3 is formed in the first cylindrical recess. The pressurized fluid, which then begins to flow against the direction of the arrow K, overcomes the force applied by the spring 6 and moves the annular closure member 8 so that it abuts against the screw face 14 and closes the liquid flow. Accordingly, by using a circular closing plate 8 without through-openings 15 or B with through-openings 15, this flow is completely or partially closed. When the liquid flow is partially closed. it only flows through the passage opening 15 to control the leakage rate of the lift 18 and hence the associated device to which the line 1S is connected. Such a device can be, for example, a straight-line hydraulic motor of a high-lift truck. In such a case, assuming that the failure occurs when the lifted load is in the up position, the load is able to reach a reasonable rate of autonomic position without further intervention by the operator. The number of leakage openings 15 and their size are selected depending on the speed of descent of the mechanism. P R E D Μ E T

CLAIMS 1. An emergency valve consisting of a liquid-filled, pressure-sealed liquid-tight valve against a screw-in face, which in its first cylindrical recess is an annular closure plate abutted against a fixed body surface and rigidly connected to a pin slidable in the body and coupled to the spring , which is supported by one end on the body and the other end by a nut bolted to the end of the pin, characterized in that the emergency valve body (1) is of non-circular cross-section and is located in the inner recess "by its guide diameter" (2). (16j, the diameter of which is greater than the diameter of the circular closing dock (8), flow cross sections (5) formed between the walls of the body (1) and the cross-section of the inner recess of the duct (16), which are connected to the first cylindrical recess (3 made of the first face of the body (1) and with the second cylindrical recess (4) formed from the second face side body (1).

2. Emergency valve according to claim 1, characterized in that the body is of square cross-section.

3. Emergency valve according to claim 1, characterized in that at least one overflow opening (15) is provided in the annular closing plate (8). 1 sheet of drawings