RU2003102099A - AUTONOMOUS DEVICE FOR LIMITING THE BULK LEVEL IN THE RESERVOIR (OPTIONS) - Google Patents

Claims (8)

1. Autonomous device for restricting the level of filling in the tank, containing a housing with inlet and outlet openings and with an internal cavity divided into two, input vertical and output cavities by means of a step partition with a passage, a lid, a shutter in the form of a glass separating the inlet cavity into upper and lower parts, a diaphragm valve with a membrane with the formation of a supmembrane and submembrane cavities, characterized in that it contains a drain pipe of the filling level with a check valve connecting the supranembrane a membrane valve chamber with a reservoir through an opening made at the level of a given filling of the controlled medium and with the lower part of the inlet cavity, a tube with a check valve connecting the upper part of the inlet cavity with the outlet cavity, the submembrane cavity with a spring plate and a rod attached to the membrane is connected through the hole with the upper part of the inlet cavity, and the size of the membrane valve is selected from the ratio:

where S _m is the membrane area, m ² ; p _sp.tr - pressure created by a column of controlled medium in the discharge pipe of the filling level, N / m ² ; S _S.Sh - the cross-sectional area of the rod, m ² , p _n - pressure of the pump for supplying a controlled environment, N / m ² ; Q _pr - spring force, N, the pressure r _sp.tr depends on the height h _sp.tr (m) of the drain pipe of the loading level and the density γ _k.s (kg / m ³ ) of the controlled medium

the shutter is made in the form of a glass with a stepped bottom with the formation of shoulders and is located with a fixed gap relative to the walls of the housing, while the maximum height of the shutter raising depends on the diameter of the passage opening and is determined from the equality

where from

where h is the maximum height of the shutter, m; d is the diameter of the bore, m 2. A stand-alone device for restricting the level of filling in the tank (option), comprising a housing with inlet and outlet openings and with an internal cavity divided into two, inlet and outlet cavities by means of a step partition with a passage opening, a cover installed through the central hole of the drive cover, a spindle with a shank located in the input cavity and mounted on the cover, the upper part of the spindle is made with radial holes, moreover, the ring is rigidly mounted on the spindle and with the possibility of relative axial movement of the shutter in the form of a glass, dividing the inlet cavity into the upper and lower parts, a membrane valve with a membrane with the formation of a supmembrane and submembrane cavities, characterized in that it contains a drain level pipe with a check valve connecting the membrane membrane cavity with the reservoir through the hole made at the level of a given filling of the controlled medium, and with the lower part of the inlet cavity, a tube with a check valve connecting the upper part of the inlet cavity with the outlet cavity, etc. and this submembrane cavity with a spring plate and a rod attached to the membrane is connected through an opening to the upper part of the inlet cavity, the size of the membrane valve is selected from the ratio

where S _m is the membrane area, m ² ; R _SP.TR - pressure created by a column of a controlled environment in the discharge pipe of the filling level, N / m ² ; S _S.Sh - the cross-sectional area of the rod, m ² ; p _n - pressure of the pump for supplying a controlled environment, N / m ² ; Q _pr - spring force, N, pressure r _sp.tr depends on the height h _sp.tr (m) of the drain pipe of the filling level and density γ _ks (kg / m ³ ) of the controlled medium

moreover, a guide sleeve with longitudinal side slots for two slats and with a ring mounted on them is installed on the inside of the lid, and the shutter is made with a stepped bottom to form shoulders and is located with a fixed gap relative to the walls, on the inside of the stepped bottom of the shutter it is made with a mounting hole for the shank is a vertical protrusion connecting the shutter through the spindle to the actuator, while the maximum height of the shutter raising depends on the diameter of the bore and is determined and z equality

where from

where h is the maximum height of the shutter, m; d is the diameter of the bore, m 3. The device according to claims 1 and 2, characterized in that it contains an overflow pipe with a regulator connecting the upper and lower parts of the input cavity. 4. The device according to claim 2, characterized in that the ring is installed in such a way that when lowering the spindle to its lowest position, the hole made in the upper part of the input cavity is blocked. 5. The device according to claims 1 and 2, characterized in that in the upper part of the shutter an annular groove is made with radial holes, the cross-sectional area of the annular groove is not less than the cross-sectional area of the hole made in the upper part of the inlet cavity. 6. The device according to claims 1 and 2, characterized in that a split ring is installed in a groove made in the wall of the shutter. 7. The device according to claims 1 and 2, characterized in that the membrane valve is mounted on the cover. 8. The device according to claims 1 and 2, characterized in that the housing, cover, shutter and valve body of the membrane valve with a cover are made of structural steel st3.