SI9800279A

SI9800279A - Closure device with ball valve

Info

Publication number: SI9800279A
Application number: SI9800279A
Authority: SI
Inventors: Franz Schuck
Original assignee: Franz Schuck Gmbh
Priority date: 1997-10-28
Filing date: 1998-10-27
Publication date: 1999-04-30
Also published as: DE19747497A1; DE19747497C2; HRP980552A2

Abstract

The invention is dealing with a closure device for pipelines; with ball valves featuring a chassis, a ball valve and a positioning handle; the chassis features at least two connections for pipeline tapping as well as a bearing adapter for the positioning handle; one of the connections is in line with the bearing adapter; the closure device features a mechanism for rapid closure for example when sudden heat is detected (security closure); the security closure features a closure body and a bearing, located inside the connection (bearing adapter), which is opposite to the bearing adapter; the security closure is directly subjected to the fluid stream; a pulling rod is anticipated which on one side activates the closure body while on the other it is held by the bearing adapter; a closure spring is anticipated, which activates the pulling rod, to enact closure; a closure device is anticipated which holds the pulling rod together with the closure body in the open position; inside the bearing adapter there's a melting piece in the form of a plug, which is in normal condition under pressure inside the bearing bushing, enclosed by the bearing adapter.

Description

Zapiralna naprava s krogelnim ventilomLocking device with ball valve

Izum se nanaša na zapiralno napravo s krogelnim ventilom. Takšne zapiralne naprave se uporabljajo med drugim pri hišnih dovodnih kombinacijah. Glej npr. DE 296 18 605 Ul.The invention relates to a ball valve closing device. Such locking devices are used, inter alia, for domestic supply combinations. See, e.g. DE 296 18 605 Ul.

Zapiralne naprave omenjene vrste se uporabljajo zlasti v cevovodih za dovod mestnega plina v zgradbe. Varnost je pri tem najvišja zapoved. Tovrstne zapiralne naprave so zato v splošnem opremljene z varnostnimi zapirali, ki omogočajo hitro zapiranje, npr. ob nastopu vročine. Varnostno zapiralo mora pri tem zadovoljiti naj strožje zahteve. V teku obratovanja ne sme izgubiti sposobnosti, da v sili hitro in zagotovo zapira. Obratovalno stanje zapiralne naprave mora biti od zunaj takoj in lahko razpoznavno, to pomeni, da mora biti razvidno, ali se je varnostno zapiralo aktiviralo ali ne. V vsakem stanju varnostnega zapirala mora biti omogočeno, da se ventil prestavi z ročico. Predvidena mora biti vrnitev v čuječe stanje, čim je nevarnost odstranjena, npr. po sprožitvi zaradi kratkotrajnega nastopa vročine.Closure devices of this type are used especially in pipelines for supplying urban gas to buildings. Safety is the highest command. Such closure devices are therefore generally provided with safety closures that allow fast closure, e.g. at fever pitch. The safety lock must meet the stricter requirements. It must not lose its ability to close quickly and safely during emergency operation. The operating condition of the closing device must be immediate and easily recognizable from the outside, ie it must be clear whether or not the safety lock has been activated. In each condition of the safety shut-off, it must be possible to move the valve with the lever. It should be envisaged to return to an alert state as soon as the hazard is removed, e.g. after being triggered by a brief onset of fever.

Glede na zgornja dejstva so poznane zapiralne naprave potrebne izboljšav. Pomanjkljivost pri zapiralni napravi po DE 296 18 605 Ul je zlasti v tem, da se njen varnostni taljivi lot nahaja v pretočnem kanalu zapiralne naprave. Zaradi tega se namreč lahko zgodi naslednje: Tudi ob topli ali vroči okolici je medij, ki je v cevovodu in teče skozi zapiralno napravo, razmeroma hladen. Ker je varnostni taljivi lot v pretočnem kanalu, se ne stali, varnostno zapiralo torej ne opravi svoje funkcije. Neugodno je tudi, če so v pretočnem kanalu vzmeti ali drugi občutljivi deli, pri katerih lahko transportirani medij povzroči korozijo.In view of the above facts, known closure devices are in need of improvement. A disadvantage of the closing device according to DE 296 18 605 Ul is in particular that its safety fuse lot is located in the flow channel of the closing device. This can happen because: Even in warm or hot surroundings, the medium in the pipeline and flowing through the closing device is relatively cold. Because the safety fusible lot is in the flow channel, it does not melt, so the safety closure does not perform its function. It is also inconvenient if there are springs or other sensitive parts in the flow channel where the transported medium can cause corrosion.

Naloga izuma je zato ustvariti zapiralno napravo omenjene vrste tako, da bo zagotavljala višjo varnost, manjšo občutljivost in lahko rokovanje, da bo stanje varnostne naprave lahko razpoznavno od zunaj in dajo bo mogoče po nastopu kritične situacije in odstranitvi pojava (npr. vročine), ki varnostno napravo aktivira, vrniti v čuječe stanje.The object of the invention is therefore to create a closure device of the said type in such a way as to provide higher security, less sensitivity and light handling so that the condition of the security device can be recognized from the outside and will be possible after the onset of a critical situation and the elimination of a phenomenon (eg heat). activates the security device, returns to the idle state.

To nalogo rešuje naprava s karakteristikami po zahtevku 1.This task is solved by a device having the characteristics of claim 1.

Pomembna prednost pri tem je, da se držalo, ki zadrži varnostno zapiralo v odprtem stanju, nahaja na mestu, ki je od zunaj lahko dostopno.An important advantage of this is that the retainer that retains the safety lock in the open state is located in an easily accessible location from the outside.

Izum je pobliže opisan s pomočjo risb. Posamezne risbe prikazujejo:The invention is described in more detail with reference to the drawings. Individual drawings show:

Slika 1 prvo obliko izvedbe zapiralne naprave po izumu v prečnem prerezu.1 is a first cross-sectional view of an embodiment of the closure device of the invention.

Slika 2 povečan izrez Z s slike 1.Figure 2 is an enlarged cutout Z of Figure 1.

Slika 3 drugo obliko izvedbe zapiralne naprave po izumu.3 is another embodiment of a closure device according to the invention.

Slika 4 tretjo obliko izvedbe zapiralne naprave po izumu.Figure 4 is a third embodiment of the closure device of the invention.

Slika 5 četrto obliko izvedbe zapiralne naprave po izumu.Figure 5 is a fourth embodiment of a closure device according to the invention.

Slika 6 peto obliko izvedbe zapiralne naprave po izumu.6 is a fifth embodiment of a closure device according to the invention.

Kot je razvidno iz slik, ima prikazana zapiralna naprava okrov 1. Okrov obdaja krogelni ventil 1.1. Naprava ima priključni nastavek 1.2, priključni nastavek 1.3, ležajni nastavek 1.4 in prestavno ročico 1.5.As shown in the figures, the closure device shown has a housing 1. The housing is surrounded by a ball valve 1.1. The device has a connecting lug 1.2, a connecting lug 1.3, a bearing lug 1.4 and a gear lever 1.5.

Zapiralni element 2 sestoji iz potezne palice 2.1 in zapiralnega telesa 2.2. Ta opravi svojo funkcijo skupaj z ležiščem 1.6, kije sestavni del priključnega nastavka 1.3. Ležajni nastavek 1.4 obdaja ležajno pušo 1.7. V ležajni puši 1.7 je zapiralna vzmet 3. Ta stremi k temu, da premakne potezno palico 2.1 in zapiralno telo 2.2 na sliki v desno.The locking element 2 consists of a pull rod 2.1 and a locking body 2.2. It performs its function in conjunction with bay 1.6, which is an integral part of the coupling 1.3. The bearing attachment 1.4 surrounds the bearing bushing 1.7. In bearing bushing 1.7 there is a locking spring 3. This tends to move the pull rod 2.1 and the locking body 2.2 in the picture to the right.

V priključni nastavek 1.3 je vložen O-obroč 1.8, ki se namesti takole: Ko zapiralno telo 2.2 zapre, se med zapiralnim telesom 2.2 in ležiščem 1.6 vzpostavi tesnenje kovine na kovino. Pri tem se 0obroČ 1.8 potisne vstran. Ko se kovini stakneta, deluje tudi O-obroč 1.8, ki se pod rahlim pritiskom nasloni na ploskev zapiralnega telesa 2.2.An O-ring 1.8 is inserted into the connection nozzle 1.3, which is installed as follows: When the closure body 2.2 closes, a metal-to-metal seal is established between the closure body 2.2 and the seat 1.6. In this case, the 0Ch 1.8 is pushed aside. When the metal is glassy, the O-ring 1.8 also rests, resting slightly on the surface of the closure body 2.2 with gentle pressure.

Razume se, da zapiralno telo 2.2 nima nujno oblike krogle, kot je prikazano tukaj, ampak je lahko tudi drugačne oblike. Lahko je oblikovano kot kolut, katerega središčna os sovpada s smerjo zapiranja.It is understood that the closing body 2.2 does not necessarily have the shape of a sphere as shown here, but may also be of a different shape. It may be shaped like a disc whose center axis coincides with the direction of closure.

Desni konec potezne palice 2.1 je oblikovan v bat 2.3. Sledi čep 4 iz lahko taljive kovine, npr. Woodove zlitine. Čep 4 je nameščen v prostoru, ki ga določajo bat 2.3, ležajna puša 1.7 in zadržalni zatič 6. Zadržalni zatič 6 ima kanal 6.1. Ob nastopu vročine se čep 4 stali. Staljena kovina steče po kanalu 6.1 in pritisne barvni indikator 7 navzven, tako daje stanje varnostnega zapirala jasno vidno. Bat 2.3 ima dva O-obroča, ki sedita v utorih 2.3.1 in 2.3.2. Na ta način je vzpostavljeno tesnenje proti notranjosti okrova.The right end of the pull rod 2.1 is shaped into piston 2.3. The following is the plug 4 of the fusible metal, e.g. Wood alloys. Plug 4 is installed in the space defined by piston 2.3, bearing bushing 1.7 and retaining pin 6. Retaining pin 6 has a channel 6.1. At heat, the plug 4 melts. The molten metal flows through channel 6.1 and pushes the color indicator 7 outwards so that the condition of the safety lock is clearly visible. The piston 2.3 has two O-rings that sit in grooves 2.3.1 and 2.3.2. In this way, sealing against the inside of the housing is established.

Zadržalni zatič 6 ima zunaj navoj, znotraj pa je šesteroroben.The retaining pin 6 has a thread outside and a hexagonal inside.

Namesto čepa 4 iz taljive kovine je lahko čep iz umetne mase, ki se stali ob nastopu vročine.Instead of a plug 4 of fusible metal, it may be a plastic plug that melts at heat.

Izvedbena oblika zapiralne naprave po izumu, prikazana na sliki 4, ima večino elementov, ki so vsebovani v predhodni izvedbeni obliki. Drugače je tu oblikovana ležajna puša 1.7. Na njenem zunanjem koncu je namreč grelni element 8, ki je vstavljen v čep 4 iz Woodove zlitine in ima kotni vtič 8.1, Grelni element 8 je s kablom 8.2 priključen na daljinsko prožilno napravo, ki tukaj ni prikazana. Grelni element oziroma njegov vtič je pritrjen z zadržalno matico 9. Ležajna pušaThe embodiment of the closure device of the invention shown in Figure 4 has most of the elements contained in the previous embodiment. Otherwise, there is a bearing bushing 1.7. At its outer end, there is a heating element 8 which is inserted into a plug 4 of Wood alloy and has an angular plug 8.1, the heating element 8 is connected with a cable 8.2 to a remote actuating device not shown here. The heating element or its plug is secured with retaining nut 9. Bearing sleeve

1.7 ima odtočno izvrtino 1.7.1, skozi katero lahko Woodova zlitina po potrebi izteče.1.7 has a drain hole 1.7.1 through which the Wood alloy can leak if necessary.

Pri tej izvedbeni obliki je mogoče grelni element 8 aktivirati na daljavo, tako da stali Woodovo zlitino, ki steče skozi izvrtino 1.7.1 ali po kaki drugi poti. Bat 2.3 na potezni palici 2.1 se pod pritiskom zapiralne vzmeti 3 premakne v desno, tako da sede zapiralno telo 2.2 v ležišče 1.6.In this embodiment, the heating element 8 can be actuated remotely by molting a Wood alloy which flows through bore 1.7.1 or some other path. Pushing 2.3 on the pull rod 2.1 moves to the right under pressure of the locking spring 3, so that the locking body 2.2 sits in the seat 1.6.

Tudi tu delujeta skupaj dve tesnili, in sicer tesnenje kovine na kovino med zapiralnim telesom 2.2 in ležiščem 1.6, pa tudi tesnenje kovine na gumo med zapiralnim telesom 2.2 in O-obročem 1.8.Here, too, two seals work together, namely the metal-to-metal sealing between the closure body 2.2 and bearing 1.6, as well as the metal seal to rubber between the closure body 2.2 and the O-ring 1.8.

Tudi izvedbena oblika po sliki 5 predvideva možnost daljinskega aktiviranja varnostnega zapirala. Namesto grelnega elementa 8 na sliki 4 je tukaj predvideno mehansko proženje. Spet je tu čep 4 iz lahko taljive kovine. Na zunanjem koncu ležajne puše 1.7 je zadržalni zatič 6.The embodiment of Figure 5 also provides for the possibility of remote activation of the safety lock. Mechanical actuation is provided in place of the heating element 8 in Figure 4. Here again is the plug 4 of the fusible metal. At the outer end of the bearing bushing 1.7 there is a retaining pin 6.

Na ležaj no pušo 1.7 sta privita nastavni obroč 10 in matica 11. Nastavni obroč 10 nosi nastavek 12 za potezno vrvico (Bowdenov poteg). Na sliki je prikazan le njen zatič 13. Zatič 13 sega skozi izvrtino v ležajno pušo 1.7 in v krožni utor 6.2 v zadržalnem zatiču 6. Na sliki je vidna kapa 14 iz umetne mase, ki objema matico 11.The adjusting ring 10 and the nut 11 are screwed onto the bearing bushing 1.7. The adjusting ring 10 bears an attachment 12 for the pull cord (Bowden pull). Only its pin 13 is shown in the picture. The pin 13 extends through the bore into the bearing bushing 1.7 and into the circular groove 6.2 in the retaining pin 6. The figure shows a plastic cap 14 enclosing the nut 11.

V normalnem stanju, ko je varnostno zapiralo odprto, to pomeni ko je zapiralno telo 2.2 dvignjeno od ležišča 1.6, sega zatič 13 v utor 6.2.In the normal state, when the safety lock is open, that is, when the locking body 2.2 is raised from the seat 1.6, the pin 13 extends into the groove 6.2.

V varnostnem stanju se čep 4 iz Woodove zlitine stali. Skozi izvrtino 6.1 pride v zadržalni zatič 6, na sliki proti desni, odrine kapo 14 iz umetne mase in izteče. V alternativni izvedbi ima kapa 14 lahko izvrtino, skozi katero izteče staljena kovina.In safety condition, the Wood alloy plug 4 melt. Through the hole 6.1 it enters the retaining pin 6, in the picture to the right, removes the plastic cap 14 and escapes. In an alternative embodiment, the cap 14 may have a bore through which molten metal flows.

Varnostno zapiralo je mogoče upravljati daljinsko s pomočjo potezne vrvice. Zatič 13 se izvleče iz krožnega utora 6.2, sila zapiralne vzmeti 3 potisne bat 2.3 potezne palice 2.1 v desno in s tem zapre zapiralno telo 2.2.The safety lock can be operated remotely by means of a drawstring. The pin 13 is pulled out of the circular groove 6.2, the force of the closing spring 3 pushes the piston 2.3 of the pull rod 2.1 to the right, thereby closing the closing body 2.2.

Prednosti izuma so:The advantages of the invention are:

Varnostno občutljivi deli, zlasti čep iz lahko taljivega materiala - bodisi iz umetne mase ali iz lahko taljive kovine - se nahajajo izven poti pretoka medija, ki gaje z zapiralno napravo mogoče zapreti. Taljivi material je tako zaščiten in reagira le na toploto izven transportiranega medija.The safety-sensitive parts, in particular the plug of the fusible material - whether of plastic or of the fusible metal - are located outside the flow path of the medium, which can be closed with a closing device. The fusible material is thus protected and reacts only to heat outside the transport medium.

Konstrukcija zapiralne naprave je zelo preprosta.The design of the closing device is very simple.

Stanje celotne zapiralne naprave je mogoče hitro in zanesljivo ugotoviti od zunaj. Poleg tega je mogoče zapiralno napravo, potem ko pride do aktiviranja in ko je odstranjen vzrok aktiviranja, zlahka in hitro postaviti v čuječe stanje. Vstaviti je treba le nov taljivi čep 4, kar je izvedljivo brez zahtevne montaže.The condition of the entire closure device can be quickly and reliably determined from the outside. In addition, once the actuation has occurred and the cause of the actuation has been removed, the closing device can be easily and quickly put into an audible state. Only a new fusible plug 4 needs to be inserted, which is feasible without demanding installation.

Claims

Patent claims

1. Pipeline closure device;

1.1. With a ball valve consisting of a housing (1), a ball valve (2) and a gear lever (15);

1.2. The housing has at least two attachments (1.2, 1.3) for the pipeline and a bearing attachment (1.4) for the gear lever (1.5);

1.3. One of the attachment nozzles (1.3) is arranged in line with the bearing attachment (1.4);

1.4. By means of a fast closing device, e.g. in the onset of fever (safety closure);

1.5. The safety locking device has a locking body (2.2) and a bearing (1.6) mounted in the connecting extension (1.3) (bearing extension), opposite the bearing extension (1.4);

1.6. The safety lock is exposed directly to the fluid flow;

1.7. The locking device has a pull rod (2.1) extending on one side to the locking body (2.2) and resting on the other in the bearing extension (1.4);

1.8. The locking device has a locking spring (3) acting on the pull rod (2.1) by closing it;

1.9. The locking device has a locking device that holds the pull rod (2.1) together with the locking body in the open state;

1.10. In the bearing extension (1.4) is a fuse in the form of a plug (4), which sits in the normal state under tension in the bearing sleeve (1.7), which is enclosed by the bearing adapter (1.4).

Closure device according to claim 1, characterized in that it has a retaining pin (6) which holds the fuse plug (4) during operation.

Closure device according to claim 1 or 2, characterized in that a heating element (8) is installed at the fuse plug (4), optionally a remote controlled electric heating resistor.

Locking device according to claim 2, characterized in that the retaining pin (6) can be locked or released by means of a pin (13) which is controlled remotely by a pull cord (Bowden pull).

Closure device according to claim 2, characterized in that the retaining pin (6) is mounted in the bearing sleeve (1.7) so that it can be pulled out of the bearing sleeve (1.7) only by a specified thrust force, and that it has a compressed air connection , which is designed and positioned so that the compressed air pushes the retaining pin (6) out of the bearing bushing (1.7).

Closing device according to one of Claims 1 to 5, characterized in that the end (2.3) of the pull rod (2.1), which is enclosed by the bearing sleeve (1.7), is sealed against at least one O- by the bearing sleeve (1.7). ring.

Closure device according to one of Claims 2 to 6, characterized in that the retaining pin (6) has a channel (6.1) for the discharge of the fusible metal.

Closing device according to claim 7, characterized in that an indicator is provided at the free end of the retaining pin, which is pushed outwards in the safety situation under pressure due to molten metal, thus indicating the status of the closure.

Closure device according to one of Claims 1 to 8, characterized in that an O-ring (1.8) is provided in the area of the closure body (2.2) and the associated bearing (1.6).