SU13295A1 - Bourdon tube pressure gauge - Google Patents

Description

Locomotive and other pressure gauges are usually located vertically, and have an unbalanced and indefinitely locking sector and a Bourdon tube hanging in the same plane. Both that and the other parts of the mechanism, in the case of vertical shocks, experienced by the locomotive as they move, perceive them and, due to their rather considerable weight, they oscillate. The gauge indicator associated with the mentioned parts of the mechanism, regardless of the actual pressure, receives displacements in the direction of decreasing and increasing the readings, which prevents the operator to monitor the vapor pressure in the boiler and, knocking down the control arrow, eliminates the ability to check what the greatest actual pressure is the driver is admitted. In addition, the reference arrow of existing gauges is engaged with the locking gear by means of a ratchet clutch, while the inclined ratchet tooth is applied on the same gear in a plane protruding above the scale and parallel to it. For constructive reasons, the ratchet tooth cannot be arbitrarily close to the center of the scale and therefore it must be applied at a certain distance, which causes an increase in the forces that inhibit the control arrow.

The present invention aims to eliminate the above disadvantages

By the vertical positioning of the scale and pointer, the unbalanced parts of the device are arranged horizontally, and the ratchet tooth is applied on the cylindrical surface of the protrusion of the locking gear.

In FIG. 1 depicts a longitudinal section of the proposed pressure gauge; FIG. 2 is a view from above, with a partial cut.,

When BepTHKajfbHOM position of the scale 6 gauge, the mechanism of it with all the unbalanced parts and tube Bourdon S ,. positioned horizontally. With such a position of the mechanism, the vertical movement of sector 1 is paraplassed by the resistance of the nth axis of its axis 7, which abuts against the bearings. As for the Bourdon tube 5, when the direction of the jolts coincides with the major axis of its elliptical cross section, it is more rigid, reacts weakly to oscillations and does not distort the manometer readings, since these oscillations are minor and occur in the direction perpendicular to the plane unbending it.

To reduce the braking force resulting from the coupling of one, two or three legs of the reference arrow with the ratchet tooth, the latter is applied on the cylindrical surface of the protrusion 9 of the locking gear o. Control

the arrow engages the ratchet by means of two bent down spring legs 8 and rotates freely on the upper protrusion of the ratchet gear, as on an axis, and a nut 10 is provided to prevent it from slipping off, Tube 2 is connected to the nipple 20 using The pressure tube 13, which is of sufficient length, can also serve to condense the vapor and thus protect the Bourdon tube 2 from its immediate action.

The subject of the patent.

1. A manometer with a Burdon tube, characterized in that for the purpose of

reducing the impact of vertical shocks on the readings of the manometer, the vertical position of the scale 6 of the manometer and pointer 5, the Bourdon tube 2 and all unbalanced parts of the mechanism are horizontal, and for braking the control arrow the ratchet tooth of the locking gear 5 on the cylindrical surface projection 9 last.

2. B described in paragraph 1 of the pressure gauge application of the connecting tube 13 located inside the pressure gauge and serving to transfer pressure from the nipple 20 to the pressure gauge tube 2, which tube 13 with a sufficient length serves as a condensation tube.