NO820747L - SAFETY VALVE. - Google Patents

SAFETY VALVE.

Info

Publication number
NO820747L
NO820747L NO820747A NO820747A NO820747L NO 820747 L NO820747 L NO 820747L NO 820747 A NO820747 A NO 820747A NO 820747 A NO820747 A NO 820747A NO 820747 L NO820747 L NO 820747L
Authority
NO
Norway
Prior art keywords
valve
housing
valve seat
threaded connection
safety
Prior art date
Application number
NO820747A
Other languages
Norwegian (no)
Inventor
Arend Sasserath
Willi Hecking
Original Assignee
Sasserath & Co Kg H
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sasserath & Co Kg H filed Critical Sasserath & Co Kg H
Publication of NO820747L publication Critical patent/NO820747L/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
    • F16K17/085—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage with diaphragm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K43/00—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Glass Compositions (AREA)
  • Control Of Combustion (AREA)
  • Compressor (AREA)

Abstract

1. Safety valve particularly for closed heating installations or hot-water boilers, comprising a valve housing (10) having an inlet port and an outlet port (12 and 14, respectively), and a safety valve assembly (16) adapted to be inserted into the valve housing (10), this assembly (16) consisting of - an upper housing portion (18) - a lower housing portion (20) inserted sealingly into the valve housing (10), - a diaphragm (22) clamped between the upper housing portion (18) and the lower housing portion (20), - a valve closing member (24) connected to the diaphragm (22), - a biased load spring (26) provided in the upper housing portion (18) and acting on the valve closing member (24), and - a valve seat (28) provided on a tubular valve seat body (34), which valve seat (28) is connected to the lower housing portion (20) through ribs (30) and which is adapted to be inserted sealingly into the valve housing (10) such that it encloses the passage between the inlet port and the outlet port (12 and 14, respectively), and coacts with the valve closing member (24) which engages the valve seat (28) until a predetermined inlet pressure under the action of the load spring (26) against the action of the inlet pressure and closes the passage, characterized in that a) the valve housing (10) has its own valve seat (32) b) the tubular valve seat body (34) sealingly engages the valve seat (32) of the valve housing (10) on its side remote from the valve seat (28) of the assembly (16), and c) the valve housing (10) forms an annulus (36) externally around the valve seat body (34), which annulus (36) communicates with the outlet port (14).

Description

Oppfinnelsen angår en sikkerhetsventil, især for lukkede varmeanlegg eller varmtvannsberedere, med et ventilhus med en inntaks- og en uttakstilkobling og en i ventilhusei innsettbar sikkerhetsventil-innbyggingsgruppe med en husdel, en i ventilhuset tettende innsatt husunderdel, en mellom husoverdelen og husunderdelen innspent membran, et med membranen forbundet ventillukkeledd, en i husoverdelen anordnet, mot ventillukkeleddet virkende, forspent belastningsfjær og et ventilsete som via ribber er forbundet med husunderdelen, kan settes inn tettende i ventilhuset slik at den omslutter gjennomgangen mellom inntaks- og uttakstilkoblingen og virker sammen med ventillukkeleddet som inntil et gitt inntakstrykk under påvirkningen av belastningsfjæren mot virkningen av inntakstrykket sitter på ventilsetet og sperrer inngangen. The invention relates to a safety valve, in particular for closed heating systems or water heaters, with a valve housing with an inlet and an outlet connection and a safety valve installation group that can be inserted into the valve housing with a housing part, a lower housing part inserted sealingly in the valve housing, a diaphragm clamped between the upper housing part and the lower housing part, a valve closing joint connected to the diaphragm, a pre-tensioned load spring arranged in the upper part of the housing, acting against the valve closing joint, and a valve seat which is connected via ribs to the lower housing part, can be inserted sealingly into the valve housing so that it encloses the passage between the intake and outlet connection and works together with the valve closing joint as until a given intake pressure under the influence of the load spring against the action of the intake pressure sits on the valve seat and blocks the entrance.

Slike sikkerhetsventiler skal åpne ved et utilla-telig overtrykk i systemet, eksempelvis i en varmtvannsbereder eller i et lukket sentralvarmeanlegg og slippe ut vann. Det vann som slippes ut ledes bort via et uttak. Such safety valves must open in the event of an impermissible overpressure in the system, for example in a water heater or in a closed central heating system, and release water. The water that is released is led away via an outlet.

Slike sikkerhetsventiler danner vanligvis en del av et sikkerhetsarmatur hvor en gjennomløpskahal er anordnet fra et inntak til et uttak i en husdel og denne husdel samtidig danner en husunderdel for stengeventiler, en sikkerhetsventil og en tilbakeslagsventil. Sikkerhetsventilens uttak er herved en likeledes i husdelen anordnet uttakskanal som fører til en uttaksstuss på husdelen (DE 1 934 732). Such safety valves usually form part of a safety fitting where a through-hole is arranged from an inlet to an outlet in a housing part and this housing part simultaneously forms a lower housing part for shut-off valves, a safety valve and a non-return valve. The outlet of the safety valve is thus an outlet channel also arranged in the housing part which leads to an outlet nozzle on the housing part (DE 1 934 732).

Ved en varmtvannsbereder aktiveres sikkerhetsventilen ved enhver oppvarming av varmtvannsberederen og blåser en mindre vannmengde ut. Dette er den normale funksjon: Ved oppvarmingen utvider vannet seg og denne utvidelse må kompenseres ved utblåsing av en mindre vannmengde. Sikkerhetsventilen aktiveres således ikke utelukkende ved In the case of a water heater, the safety valve is activated with any heating of the water heater and blows out a smaller amount of water. This is the normal function: During heating, the water expands and this expansion must be compensated by blowing out a smaller amount of water. The safety valve is thus not activated exclusively by

tilfeller med en feilfunksjon i systemet, men stadig under normal drift.. Derved utsettes sikkerhetsventilen i stor grad for slitasje i ventilsetets område. Denne slitasje kan påvirke sikkerhetsventilens funksjon.. Det er meget om-stendelig når i et slikt tilfelle hele sikkerhetsarmaturen må bygges ut og byttes. cases with a malfunction in the system, but still during normal operation.. This exposes the safety valve to a large degree of wear in the area of the valve seat. This wear and tear can affect the function of the safety valve. It is very difficult when in such a case the entire safety fitting has to be expanded and replaced.

Da det for slike sikkerhetsventilers pålitelighet stilles store krav gjennom myndighetenes forordninger, er det ikke tillatt og heller ikke hensiktsmessig, eksempelvis ved slitasje av ventilleddet, kun å bytte ut ventiloverdelen med ventillukkeleddet og trykkfjæren og å la ventilunder-delen, dvs. sikkerhetsarmaturens støpedel gjenstå for videre bruk. Ved en utskifting av kun ventiloverdelen ville nemlig opprettholdelse av sikkerhetsventilens funksjonspunkt ikke mere være sikker. Det kreves at hver enkelt sikkerhetsventil innstilles og plomberes på fabrikk. Since the reliability of such safety valves is subject to high demands through the government's regulations, it is neither permitted nor appropriate, for example in case of wear of the valve joint, to only replace the valve upper part with the valve closing joint and the pressure spring and to leave the valve lower part, i.e. the cast part of the safety fitting, to remain for further use. In the case of a replacement of only the valve upper part, maintenance of the safety valve's function point would no longer be certain. It is required that each individual safety valve is set and sealed at the factory.

Fra DE-AS. 1 650 544 er en sikkerhetsventil av den foreliggende type kjent, med et ventilhus som har et inntak og et uttak som er forbundet med et avledningsrør. I ventilhuset er en sikkerhetsventilinnbyggingsgruppe innsatt. Denne innbyggingsgruppe inneholder en husoverdel og en husunderdel, mellom hvilke en membran er innspent. På husunderdelen er et ventilsete anordnet som er forbundet med husunderdelen ved ribber og tettende slik innsatt i ventilhuset at den omslutter gjennomgangen mellom inntaks- og uttakstilkoblingen. Ventilsetet virker sammen med ventillukkeleddet som ved DE-AS 1 650 544 er dannet av den midtre del av membranen . Dette ventillukkeledd ligger an mot ventilsetet og sperrer gjennomgangen mot inntakstrykkets virkning inntil et på forhånd fastlagt inntakstrykk under påvirkning av en i husoverdelen anordnet belastningsfjær. From DE-AS. 1 650 544 a safety valve of the present type is known, with a valve body having an inlet and an outlet which are connected to a diversion pipe. A safety valve installation group is inserted in the valve housing. This installation group contains an upper housing part and a lower housing part, between which a membrane is clamped. A valve seat is arranged on the lower part of the housing, which is connected to the lower part of the housing by ribs and sealingly inserted in the valve housing in such a way that it encloses the passage between the intake and outlet connection. The valve seat works together with the valve closing joint which, in DE-AS 1 650 544, is formed by the middle part of the diaphragm. This valve closing joint rests against the valve seat and blocks the passage against the effect of the intake pressure up to a predetermined intake pressure under the influence of a load spring arranged in the upper part of the housing.

En lignende anordning er beskrevet i DE-OSA similar device is described in DE-OS

2 658 721. 2,658,721.

Ved disse kjente sikkerhetsventiler er således ventilsetet med ventillukkeleddet og belastninasfiæren for-enet i et hus til en- sikkerhetsventilinnbyggingsgruppe. Denne sikkerhetsventilinnbyggingsgruppe settes inn i ventilhuset som har en inntakstilkobling og en uttakstilkobling. Dette tillater en utskifting av sikkerhetsventilinnbyggingsgruppen i tilfelle beskadigelse, eksempelvis av ventilsetet. Det handler her imidlertid om en spesiell konstruksjon hvor ikke ventilsetet, slik det er vanlig, danner en del av det på kjent måte som støpedel utformede ventilhus. Bruken av konstruksjonen ifølge DE-OS 1 650 544 og DE-OS 2 658 721 krever at alle sikkerhetsventiler utfgrmes på denne måte for i tilfelle behov, å kunne utføre en utskifting av sikkerhetsventilinnbyggingsgruppen.. Dette fordyrer vesentlig fremstillingen selv om en slik utskifting på ingen måte kreves ved alle sikkerhetsventiler som finnes innsatt. In the case of these known safety valves, the valve seat with the valve closing joint and the load spring are thus united in a housing to form a safety valve installation group. This safety valve installation group is inserted into the valve body which has an inlet connection and an outlet connection. This allows a replacement of the safety valve installation group in the event of damage, for example to the valve seat. However, this is about a special construction where the valve seat does not, as is usual, form part of the valve housing designed in a known manner as a cast part. The use of the construction according to DE-OS 1 650 544 and DE-OS 2 658 721 requires that all safety valves are designed in this way in order to be able to replace the safety valve installation group if necessary. method is required for all safety valves that are installed.

Oppfinnelsen tar sikte på å frembringe en kon-struksj.on som tillater å overholde de sikkerhetstekniske krav ved innbyggingen av standardiserte sikkerhetsventiler med et i ventilhuset anordnet ventilsete, hvor imidlertid ventilsetet med ventillukkeleddet og belastningsfjæren i tilfelle en defekt, kan erstattes enkelt med en patronformet sikkerhetsventilinnbyggingsgruppe. The invention aims to produce a construction which allows compliance with the safety technical requirements when installing standardized safety valves with a valve seat arranged in the valve housing, where, however, the valve seat with the valve closing link and the load spring can be easily replaced with a cartridge-shaped safety valve installation group in the event of a defect .

Med utgangspunkt i en sikkerhetsventil av den innledningsvis definerte type løses denne oppgave ved at ventilhuset danner et ventilsete, sikkerhetsventilinnbyggingsgruppens ventilsete er anordnet på et rørformet ventilsetelegeme som ligger ved den side som vender bort fra ventilsetet, tettende an mot ventilhusets ventilsete og hvor ventilsetet danner et ringrom omkring ventilsetelegemet, som står i forbindelse med uttakstilkoblingen. Based on a safety valve of the type defined at the outset, this task is solved by the valve body forming a valve seat, the valve seat of the safety valve installation group is arranged on a tubular valve seat body which is located on the side facing away from the valve seat, sealing against the valve seat of the valve body and where the valve seat forms an annular space around the valve seat body, which is connected to the outlet connection.

Ved konstruksjonen ifølge oppfinnelsen har ventilhuset et ventilsete. Først bygges en sikkerhetsventil inn som inneholder en husoverdel med en belastningsfjær, membranen og det med membranen forbundne ventillukkeledd i forbindelse med ventilhuset på en slik måte at membranen i den standardiserte utførelse, er innspent mellom husoverdelen og ventilhuset og ventillukkeleddet samvirker med ventilsetet i ventilhuset. Den på denne måte utformede sikkerhetsventil innstilles og plomberes i fabrikk. Når ventilsetet i en ventil beskadiges, fjernes husoverdelen med membranen og ventillukkeleddet. I stedet innsettes deretter en sikkerhetsventilinn byggingsgruppe som har et In the construction according to the invention, the valve housing has a valve seat. First, a safety valve is built in which contains a housing upper part with a load spring, the diaphragm and the valve closing joint connected to the diaphragm in connection with the valve housing in such a way that the diaphragm in the standardized design is clamped between the housing upper part and the valve housing and the valve closing joint cooperates with the valve seat in the valve housing. The safety valve designed in this way is adjusted and sealed in the factory. When the valve seat in a valve is damaged, the upper part of the housing with the membrane and the valve closing joint is removed. Instead, a safety valve is then inserted into the construction group which has a

eget ventilsete som ligger tettende an mot ventilhusets ventilsete. Strømningen kan strømme omkring sikkerhstsventil-innbyggingsgruppens ventilsetelegeme gjennom ringrommet. En slik sikkerhetsventilinnbyggingsgruppe med nytt ventilsete separate valve seat that is tightly abutting the valve housing's valve seat. The flow can flow around the safety valve assembly assembly's valve seat body through the annulus. Such a safety valve installation group with a new valve seat

må kun innbygges når en sikkerhetsventil virkelig er defekt. Denne sikkerhetsventilinnbyggingsgruppe kan likeledes jus- must only be installed when a safety valve is really defective. This safety valve installation group can also be jus-

teres og plomberes på fabrikk. Den kan i stor grad oppbyg-ges av de samme innbyggingsdeler som en normal sikkerhetsventil. are sealed and sealed at the factory. It can largely be constructed from the same built-in parts as a normal safety valve.

Ytterligere utforminger av oppfinnelsen er gjen-stand for underkravene. Further designs of the invention are the subject of the subclaims.

En utførelse av oppfinnelsen er beskrevet i det etterfølgende i henhold til tegningen som viser et lengde-snitt gjennom sikkerhetsventilen. An embodiment of the invention is described below according to the drawing which shows a longitudinal section through the safety valve.

Sikkerhetsventilen inneholder et ventilhus 10 med en inntakstilkobling 12 og en uttaktilkobling 14. I ventilhuset 10 er innsatt en sikkerhetsinnbyggingsgruppe 16. Inn-byggingsgruppen inneholder en husoverdel 18, en i ventilhuset 10 innsatt husunderdel 20 og en mellom husoverdelen 18 og husunderdelen 20 innspent membran 22. Et ventillukkeledd 24 er forbundet med membranen 22. I husoverdelen 18 The safety valve contains a valve housing 10 with an inlet connection 12 and an outlet connection 14. A safety built-in group 16 is inserted into the valve housing 10. The built-in group contains a housing upper part 18, a housing lower part 20 inserted in the valve housing 10 and a membrane 22 clamped between the housing upper part 18 and the housing lower part 20. A valve closing link 24 is connected to the membrane 22. In the housing upper part 18

er anordnet en belastningsf jaer 26 som under forspenning virker mot ventillukkeleddet 24. Et ventilsete 28 er forbundet med husunderdelen 20 via ribber 30. Ventilsetet 2 8 kan settes slik inn i ventilhuset 10 at det omslutter gjennomgangen mellom inntaks- og uttakstilkoblingene 12 hhv. 14 og virker sammen med ventillukkeleddet 24 som inntil et gitt inntakstrykk, under påvirkning av belastningsfjæren 26, ligger an mot ventilsetet 2 8 mot inntakstrykkets virkning og sperrer gjennomgangen. a load spring 26 is arranged which, under bias, acts against the valve closing joint 24. A valve seat 28 is connected to the lower part of the housing 20 via ribs 30. The valve seat 28 can be inserted into the valve housing 10 in such a way that it encloses the passage between the intake and outlet connections 12 or 14 and works together with the valve closing link 24 which, until a given intake pressure, under the influence of the load spring 26, rests against the valve seat 2 8 against the effect of the intake pressure and blocks the passage.

Ventilhuset 10 danner likeledes et ventilsete 32. Ventilsetet 28 i sikkerhetsventilinnbyggingsgruppen 16 er anordnet på et rørformet ventilsetelegeme 34 som med sitt fra ventilsetet bortvendende sete ligger tettende an mot ventilhusets 10 ventilsete 32. Ventilhuset 10 danner på utsiden av ventilsetelegemet 34 et ringrom 36 som står i forbindelse med uttakstilkoblingen 14. The valve housing 10 likewise forms a valve seat 32. The valve seat 28 in the safety valve installation group 16 is arranged on a tubular valve seat body 34 which, with its seat facing away from the valve seat, rests tightly against the valve seat 32 of the valve housing 10. The valve housing 10 forms on the outside of the valve seat body 34 an annular space 36 that stands in connection with the outlet connection 14.

Husoverdelen 18 danner, en gjengestuss 38 med ytre gjenger. Husunderdelen 20 danner en første gjengestuss 40 med indre gjenger, til hvilken en indre ringskulder 42 ligger an. Husoverdelen 18 er med sin gjengestuss 38 skrudd inn i husunderdelens 20 første gjengestuss 40. Membranen er innspent mellom endeflaten på husoverdelens 18.gjengestuss 38 og husunderdelens 20 ringskulder 42. Videre har husunder delen 20 en andre gjengestuss 44 med ytre gjenger. Ventilhuset 10 har en boring 46 med indre gjenger, i hvilken husunderdelen 20 er innskrudd med sin andre gjengestuss 44. The housing upper part 18 forms a threaded connection 38 with external threads. The lower part of the housing 20 forms a first threaded connection 40 with internal threads, to which an internal annular shoulder 42 rests. The housing upper part 18 with its threaded connection 38 is screwed into the housing lower part 20's first threaded connection 40. The membrane is clamped between the end face of the housing upper part 18's threaded connection 38 and the housing lower part 20's ring shoulder 42. Furthermore, the housing lower part 20 has a second threaded connection 44 with external threads. The valve housing 10 has a bore 46 with internal threads, into which the lower housing part 20 is screwed with its second threaded connection 44.

Gjengestussen 38 i husets overdel og den andre -. gjengestuss 44 i husets underdel har tilsvarende ytre diameter og gjenger. På ventilhuset 10 er en ringskulder 48utformet vec^ den indre ende av boringen 46 med indre gjenger, som tilsvarer den indre ringskulder 42 i den nedre husdel 20. Den øvre husdel 18 med membranen 22 og ventilleddet 24 er slik dimensjonert at ved innskruing av den øvre husdel 18 Threaded socket 38 in the upper part of the house and the other -. threaded connection 44 in the lower part of the housing has a corresponding outer diameter and threads. On the valve housing 10, an annular shoulder 48 is formed around the inner end of the bore 46 with internal threads, which corresponds to the inner annular shoulder 42 in the lower housing part 20. The upper housing part 18 with the diaphragm 22 and the valve joint 24 is dimensioned so that when screwing in the upper house part 18

i ventilhusets 10 boring 46, membranen 22 innspennes mellom endeflaten av husoverdelens 18 gjengestuss 38 og ventilhusets 10 ringskulder 48 og ventillukkeleddet 24 ligger an mot ventilhusets ventilsete 32. På denne måte kan både en standardisert sikkerhetsventil og også en sikkerhetsventil-innbyggingsgruppe av den beskrevne type i stor grad oppbyg-ges med samme deler. For sikkerhetsventilinnbyggingsgruppen 16 kommer praktisk talt kun husunderdelen 20 med ribbene 30 og ventilsetelegemet 34 i tillegg, som innsettes mellom husoverdelen 18 og ventilhuset 10. in the bore 46 of the valve housing 10, the diaphragm 22 is clamped between the end surface of the housing upper part 18's threaded connection 38 and the valve housing 10's ring shoulder 48 and the valve closing joint 24 rests against the valve housing's valve seat 32. In this way, both a standardized safety valve and also a safety valve installation group of the type described in largely built up with the same parts. For the safety valve installation group 16, practically only the lower housing part 20 with the ribs 30 and the valve seat body 34 is added, which is inserted between the upper housing part 18 and the valve housing 10.

Det må påses at det i praksis naturligvis for den normale sikkerhetsventil og den viste sikkerhetsventil med sikkerhetsventilinnbyggingsgruppen riktignok benyttes ens-artede, men forskjellige deler, for sikkerhetsventilinnbyg-ginsgruppen imidlertid eksempelvis en lik, men annen husoverdel 18 enn det på forhånd var anordnet i den normale sikkerhetsventil. It must be ensured that in practice, of course, for the normal safety valve and the shown safety valve with the safety valve built-in group, identical but different parts are indeed used, for the safety valve built-in group, however, for example, a similar but different housing upper part 18 than was previously arranged in the normal safety valve.

Ved den viste utførelse er en ytre ringskulder 50 utformet omkring husunderdelens 20 andre gjengestuss 44, som ligger omkring boringen 46 mot ventilhuset 10. Mellom ring-skulderen 50 og ventilhuset 10 er innsatt en tetning 52. Ventilsetlegemets 34 lengde i sikkerhetsventilinnbyggingsgruppen 16 tilsvarer omtrent den aksiale avstand mellom den omkring husunderdelens 20 andre gjengestuss 44 dannede ringskulder 50 og den første gjengestuss' 40 endeflate 54. In the embodiment shown, an outer annular shoulder 50 is formed around the second threaded connection 44 of the lower housing part 20, which lies around the bore 46 towards the valve housing 10. A seal 52 is inserted between the annular shoulder 50 and the valve housing 10. The length of the valve seat body 34 in the safety valve installation group 16 corresponds approximately to the axial distance between the ring shoulder 50 formed around the second threaded connection 44 of the lower housing part 20 and the end surface 54 of the first threaded connection 40.

Ved den viste utførelse har ventilsetelegemet 34In the embodiment shown, the valve seat body has 34

på den ende som vender bort fra ventilsetet 2 8 en utvidelse 56 på innsiden, med hvilken det griper om ventilhusets 10 ventilsete 32 og ligger an mot dette med kontakt on the end facing away from the valve seat 2 8 an extension 56 on the inside, with which it grips the valve seat 32 of the valve housing 10 and rests against this with contact

metall mot metall.metal against metal.

Den øvrige utforming av sikkerhetsventilhuset er i det vesentlige konvensjonell. The rest of the design of the safety valve housing is essentially conventional.

Belastningsfjæren 26 ligger an mot et fjærmotlager 58. En ventilstang 60 er forbundet med det som ventiltaller-ken utformede ventillukkeledd 24 og føres i sin føringshylse 62. Mot en kant 64 på ventilstangen 60 ligger en fjærtal-lerken 66 an, mot hvilken belastningsfjæren 26 trykker. Ventilmotlageret 58 ligger an mot føringshylsens 62 endeflate, idet hylsen er utformet som gjengehylse og er ført i en gjengedel 68 i husoverdelen.18. Føringshylsen 68 danner en innstillingsskrue med hvilken sikkerhetsventilens aktiveringstrykk kan innstilles. The load spring 26 rests against a spring counter bearing 58. A valve rod 60 is connected to the valve closing joint 24 designed as the valve plate and is guided in its guide sleeve 62. A spring plate lark 66 rests against an edge 64 of the valve rod 60, against which the load spring 26 presses . The valve counter bearing 58 rests against the end surface of the guide sleeve 62, as the sleeve is designed as a threaded sleeve and is guided in a threaded part 68 in the upper part of the housing. 18. The guide sleeve 68 forms a setting screw with which the safety valve's activation pressure can be set.

En knapp 84 tjener på vanlig måte til løfting av sikkerhetsventilen. Den har løftekammer som via korrespon-derende skråflater på husets overdel 18, løfter knappen 84 ved dreining og r medbringer ventilstangen 60 via en sperre-skive 85. I tillegg har knappen 84 en plombert skive 86 A button 84 serves in the usual way to lift the safety valve. It has a lifting chamber which, via corresponding inclined surfaces on the upper part of the housing 18, lifts the button 84 when turned and brings the valve rod 60 with it via a locking disc 85. In addition, the button 84 has a sealed disc 86

som på den ene side bærer sikkerhetsventilens spesielle data og på den annen side beskytter hele innstillingsmeka-nismen for uvedkommende tilgang. which on the one hand carries the safety valve's special data and on the other hand protects the entire setting mechanism from unauthorized access.

Claims (4)

1. Sikkerhetsventil især for lukkede sentralvarmeanlegg eller varmtvannsberedere, med et ventilhus (10) med en inntaks- og en uttakstilkobling (12, 14) og en i ventilhuset (10) innsettbar sikkerhetsventilinnbyggingsgruppe (16) med en husoverdel (18), en i ventilhuset (10) tettende innsettbar husunderdel (20), en mellom husoverdelen (18) og husunderdelen (20) innspent membran (22), et med membranen (22) forbundet ventillukkeledd (24), en i husoverdelen (18) anordnet, mot ventillukkeleddet (24) virkende, forspent belastningsfjær (26) og et ventilsete (28) som via ribber (32) er forbundet med husunderdelen (20), og kan innsettes tettende i ventilhuset (10) slik at gjennomgangen mellom inntaks- og uttakstilkoblingen (12, 14) omsluttes og hvor ventilsetet virker sammen med ventillukkeleddet (24) som inntil et på forhånd angitt inntakstrykk ligger an på ventilsetet (28) under påvirkning av belastningsfjæren (26) mot virkningen av inntakstrykket og sperrer gjennomgangen, karakterisert ved at ventilhuset (10) danner et ventilsete (32), at sikkerhetsventilinnbygginasaruppens (16) ventilsete (28) er anordnet på et rørformet ventilsetelegeme (34) som med sin bort fra ventilsetet (28) vendende side ligger tettende an mot ventilhusets (10) ventilsete (32), og at ventilhuset (10) omkring ventilsetelegemet (34) danner et ringrom (36) som står i forbindelse med uttakstilkoblingen (14) .1. Safety valve especially for closed central heating systems or water heaters, with a valve housing (10) with an inlet and an outlet connection (12, 14) and a safety valve installation group (16) that can be inserted into the valve housing (10) with a housing upper part (18), one in the valve housing (10) sealing insertable housing lower part (20), a diaphragm (22) clamped between the upper housing part (18) and the lower housing part (20), a valve closing joint (24) connected to the membrane (22), one arranged in the upper housing part (18), against the valve closing joint ( 24) acting, pre-tensioned load spring (26) and a valve seat (28) which is connected via ribs (32) to the housing lower part (20), and can be inserted sealingly into the valve housing (10) so that the passage between the intake and outlet connection (12, 14 ) is enclosed and where the valve seat works together with the valve closing joint (24) which, until a pre-specified intake pressure, rests on the valve seat (28) under the influence of the load spring (26) against the effect of the intake pressure and blocks the passage, characterized by the valve housing (10) forms a valve seat (32), that the valve seat (28) of the safety valve built-in casing (16) is arranged on a tubular valve seat body (34) which, with its side facing away from the valve seat (28), rests tightly against the valve seat of the valve housing (10) ( 32), and that the valve housing (10) around the valve seat body (34) forms an annular space (36) which is connected to the outlet connection (14). 2. Ventil ifølge krav 1, karakterisert ved at husoverdelen (18) danner en gjengestuss (38) med ytre gjenger, at husunderdelen (20) danner en første gjengestuss (40) med indre gjenger mot hvilken en indre ringskulder (42) Ugger an, at husoverdelen (18) med sin gjengestuss (38) er skrudd inn i husunderdelens (20) første gjengestuss (40) og membranen (22) er innspent mellom endeflaten på hus-ov.erdelens (18) gjengestuss (38) og husunderdelens (20) ringskulder (42) , at husunderdelen (20) har en andre gjengestuss (44) med ytre gjenger, og at ventilhuset (10) har en boring (46) med indre gjenger i hvilken husunderdelen (20) er innskrudd med sin andre gjengestuss (44).2. Valve according to claim 1, characterized in that the upper housing part (18) forms a threaded connection (38) with external threads, that the lower housing part (20) forms a first threaded connection (40) with internal threads against which an inner ring shoulder (42) Ugger an, that the housing upper part (18) with its threaded connection (38) is screwed into the first threaded connection (40) of the housing lower part (20) and the membrane (22) is clamped between the end surface of the housing upper part (18) threaded connection (38) and the housing lower part (20) ) ring shoulder (42), that the housing lower part (20) has a second threaded connection (44) with external threads, and that the valve housing (10) has a bore (46) with internal threads into which the housing lower part (20) is screwed with its second threaded connection ( 44). 3. Ventil ifølge krav 2, karakterisert ved at husoverdelens (18) gjengestuss (38) og husunderdelens (20) andre gjengestuss (44) har samme ytre diameter og gjenger, at boringen (46) med indre gjenger i den indre ende av ventilhuset (10) tilsvarer en ringskulder (42) i den nedre husdel (20) og at den øvre husdel (18) med membran (22) og ventillukkeledd (24) er slik dimensjonert at ved innskruing av den øvre husdel (18) i ventilhusets (10) boring (46) , membranen (22) spennes inn mellom endeflaten på husoverdelens (18) gjengestuss (38) og ventilhusets (10) ringskulder (48) og at ventillukkeleddet (24) sitter på ventilhusets (10) ventilsete (32).3. Valve according to claim 2, characterized in that the housing upper part (18) threaded connection (38) and the housing lower part (20) other threaded connection (44) have the same outer diameter and threads, that the bore (46) with internal threads in the inner end of the valve housing ( 10) corresponds to an annular shoulder (42) in the lower housing part (20) and that the upper housing part (18) with membrane (22) and valve closing joint (24) is dimensioned in such a way that when screwing the upper housing part (18) into the valve housing (10) ) bore (46) , the membrane (22) is clamped between the end surface of the housing upper part (18) threaded connection (38) and the valve housing (10) ring shoulder (48) and that the valve closing joint (24) sits on the valve housing (10) valve seat (32). 4. Ventil ifølge krav 3, karakterisert ved at en omkring husunderdelens (20) andre gjengestuss (24) utformet ytre ringskulder (50) ligger an mot ventilhuset (10) og at lengden av sikkerhetsventilinnbyggingsgruppens (16) ventilsetelegeme (34) tilnærmet er lik den aksiale avstand mellom den omkring husunderdelens (20) andre gjengestuss (44) dannede ringskulder (50) og den første gjengestuss' (40) endeflate.4. Valve according to claim 3, characterized in that an outer ring shoulder (50) formed around the second threaded connection (24) of the housing lower part (20) rests against the valve housing (10) and that the length of the valve seat body (34) of the safety valve installation group (16) is approximately equal to the axial distance between the ring shoulder (50) formed around the second threaded connection (44) of the housing lower part (20) and the end surface of the first threaded connection (40).
NO820747A 1981-03-10 1982-03-09 SAFETY VALVE. NO820747L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813108952 DE3108952A1 (en) 1981-03-10 1981-03-10 SAFETY VALVE

Publications (1)

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NO820747L true NO820747L (en) 1982-09-13

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ID=6126753

Family Applications (1)

Application Number Title Priority Date Filing Date
NO820747A NO820747L (en) 1981-03-10 1982-03-09 SAFETY VALVE.

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EP (1) EP0059905B2 (en)
AT (1) ATE8429T1 (en)
DE (2) DE3108952A1 (en)
NO (1) NO820747L (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528517B1 (en) * 1982-06-09 1986-02-21 Sfr Sa Robinetterie SHUTTER FOR MOUNTING IN A BODY
DE3444451A1 (en) * 1984-12-06 1986-06-19 Vdo Adolf Schindling Ag, 6000 Frankfurt ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
AT396814B (en) * 1991-09-09 1993-12-27 Vaillant Gmbh ASSEMBLY WITH A STOP VALVE AND A SAFETY VALVE FOR A HYDRAULIC PIPE IN A WATER HEATER
DE4335186A1 (en) * 1993-10-15 1995-04-20 Sasserath & Co Kg H Assembly for a diaphragm safety valve for insertion in a safety valve housing
DE29516718U1 (en) * 1995-10-23 1996-01-18 Ramesberger, Fritz, 85614 Kirchseeon Measuring device for monitoring expansion water and leakages on safety valves
DE10025233B4 (en) * 2000-05-22 2007-07-26 Veit Gmbh & Co Steam iron with steam outlet valve
CN106090293B (en) * 2016-06-08 2018-09-18 北京控制工程研究所 A kind of diaphragm type latching valve bidirectional bearing structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH606877A5 (en) * 1975-05-31 1978-11-15 Ideal Standard
GB1501161A (en) * 1976-07-15 1978-02-15 Clark T Water taps and the like
DE2658721A1 (en) * 1976-12-24 1978-07-06 Braukmann Armaturen SAFETY VALVE

Also Published As

Publication number Publication date
EP0059905B2 (en) 1986-12-03
EP0059905A1 (en) 1982-09-15
DE3108952A1 (en) 1982-09-23
EP0059905B1 (en) 1984-07-11
DE3260348D1 (en) 1984-08-16
ATE8429T1 (en) 1984-07-15

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