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
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/10—Means for stopping flow in pipes or hoses
• • 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
  • F16K17/20—Excess-flow valves
  • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
  • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
  • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
  • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
• • 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
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/10—Means for stopping flow in pipes or hoses
  • F16L55/1022—Fluid cut-off devices automatically actuated

Definitions

• This invention belongs to the field of wireline transportation, pneumatic and hydraulic systems.
• the effects of a pipe break can e.g. in the form of an apartment flood, road damage, a standstill of a procedural operating process, a failure of a hydraulic device.
• the consequential damage can often take on unmanageable proportions.
• This new invention is to protect many different pipeline, pneumatic, and hydraulic systems from pipe breakage damage. There are no limits to the application of the new safety valve, so that the physical state of the working medium, the system pressure and temperature as well as the size and material of the valve play a subordinate role.
• the main task of this invention is therefore, on the one hand, to disentangle the working medium from the system and on the other hand to prevent the inevitable consequential damage.
• the pipe rupture safety valve consists of a valve housing (1), valve housing cover (2), plate (3), adjusting nut (4), spring (5) and seals (6), (7), (14) and (15).
• the valve housing (1) is designed in such a way that a high flow rate - practically a measure of the pressure loss due to friction and eddy formation that results when a valve flows through - is achieved. Together with the area of the nominal diameter of the valve, very favorable valve characteristics, called k v values, are formed. According to the definition, the k v value is the flow rate in m 3 / h of the medium at 5 - 30 ° C that flows through the valve with a pressure drop of 1 bar.
• This valve has a very high k v value.
• valve housing cover (2) which is firmly connected to the valve housing (1) by means of several screws and a seal (14) placed between them, is designed so that the valve plate (3) is accommodated in its lower, wider part.
• the hole in the middle part of the valve housing cover (2) guides it. The stem of the valve disc (3) can thus be guided precisely.
• the pressure regulator consists of a spring (5) and an adjusting nut (4).
• the two parts are housed in the upper part of the valve housing cover (2).
• the connection between the adjusting nut (4) and the valve housing cover (2) is made by the thread.
• Seal (7) represents an O-ring. This seals against the sleeve seal (6), which consists of a material with a very low coefficient of friction.
• Seal (15) is also made of a seat sealing material (e.g. NBR [Perbunan]). Your task is to achieve the absolute seal between the valve plate (3) and the valve seat.
• a seat sealing material e.g. NBR [Perbunan]
• the valve works in the following way: The incoming medium passes the supply line (8) on the valve housing (1) and via the deflection chamber (9) it reaches the plate chamber (10).
• the spring characteristic is chosen so that the spring has a slightly smaller force than the force exerted by the pressure in the compensation chamber (12) on the projected plate shaft surface.
• the critical value can only be expected where the lines are violently broken.
• the counterforce is eliminated since the pressure in the compensation chamber (12) is promptly reduced, and the spring force causes the valve to close.
• This closing process will take place without delay and without causing a hydraulic shock.
• the closing damping which enables the special design of the valve plate and the cover. It is achieved in that the valve plate has a somewhat smaller diameter than the bore of the valve housing cover in the lower part. If you want to shorten / extend the closing time, larger / smaller valve disc diameters should be aimed for. Another way to control them is s. Fig. 4, given by the special design of the valve plate.
• the determination of the closing speed is defined by the number of holes.
• Bore (11) serves firstly to find the line break more quickly and easily and secondly, if closing has been caused, to allow the valve to open automatically by exceeding the maximum permitted flow rate. This is achieved in that the Tapping point is closed, whereby the pressures in the plate chamber (10) and the compensation chamber (12) equalize and the counterforce overcomes the spring force and allows the valve plate (3) to move upwards - opening -. With gaseous, toxic and extremely hot / cold media, holes (11) and (47) are not required. The absence of bore (47) can be replaced by bypasses (37) if it is a pipe rupture safety valve with a larger nominal diameter. In the case of smaller nominal diameters, the lever (16), shown in FIG 3, is used to open the valve manually.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Safety Valves (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4194239

Family Applications (1)

Country Status (6)

Cited By (5)

Families Citing this family (3)

Citations (5)

• 1988
  • 1988-02-26 DE DE8890019U patent/DE8890019U1/de not_active Expired - Lifetime
  • 1988-02-26 WO PCT/CH1988/000048 patent/WO1988006694A1/de not_active Ceased
  • 1988-02-26 AU AU13410/88A patent/AU1341088A/en not_active Abandoned
  • 1988-02-26 EP EP88901779A patent/EP0327599A1/de not_active Withdrawn
  • 1988-02-26 JP JP1989600014U patent/JPH02500003U/ja active Pending
  • 1988-10-28 KR KR1019880701377A patent/KR890700781A/ko not_active Withdrawn

Patent Citations (5)

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