Patent GB-299935-A (GB)
Title: Improvements in wet gas meters
IPC: G01F3/30
Filed: 1927-08-17
Abstract: 299,935. Thorp, F., Butterworth, E., and Rotary Meter Co., Ltd. Aug. 17, 1927. Gcs meters.-A wet gas meter comprises a number of interconnected pairs of bells, each pair constituting a balanced unit and being contained in a separate gas section of the meter and each bell being contained in a separate compartment of the gas section with the space in the compartmeni above one bell in communication with the space below the other bell of the pair, and the relative operative positions of the bells being such as to provide a continuous delivery of gas. Fig. 3 shows one section of a meter containing one pair of connected bells c, d oscillating on a shaft f in two compartments separated by a partition 2. A similar pair of bells are arranged in another section behind the section shown, the relative positions of the bells being such that one pair of bells is at the end of their stroke while the other is in a mid-position. A distributing valve divided into two compartments p, r by a partition o is rotated by cranks and connecting rods from the shafts of the bells to control the admission and withdrawal of gas through passages v, v<1>, w, w' to and from the spaces above and below the bells. A dump 5, 6 arranged in each compartment connects the space below the bell of that compartment to the space above the bell of the other compartment of the same section of the meter. In a modification, the bells are mounted on separate spindles, pinions on the spindles of each pair being geared together by means of an intermediate pinion. The spindles of the intermediate pinions operate rocking distributing valves and the index mechanism. In a second modification, four pairs of bells are arranged in four sections of the meter, the movements of all the bells being co-related by their connection to a cranked operating spindle. In a third modification, four vertically reciprocating bells are provided connected in pairs by connecting rods to oscillating beams, the valves and index mechanism being operated by the spindles of the oscillating means. Constructions of suitable rotary, oscillating, and reciprocating valves are shown on the drawings, the reciprocating valves being fitted with rollers running in guideways. Fig. 18 shows a valveless meter comprising two pairs of bells a, band c, d, each pair being connected to an oscillating beam. The base of the meter is provided with a central gas-inlet section 30 and two gas-outlet sections 31, from which inlet connections 34 and outlet connections 33 project upwards into each bell. Branches 35, 36 projecting into the bell a communicate respectively with branches 35, 36 projecting into the bell b and with pipes 6, 10 and 5, 9 connecting the space below the bell d with the space above the bell c and the space below the bell c with the space above the bell d. Branches 37, 38 projecting into the bells c, d are connected respectively to pipes 3, 7 and 4, 8 similarly connecting the spaces below and above the bells a, b. The part of each bell into which the four branches project is separated from the remainder of the bell by a partition 39, and a mid-partition 40 extends from the top to the bottom of the bell between the two centre branches 35, 36 or 37, 38. Two short partitions 41 extending half-way down from the top of each bell separate the outer branches from the centre branches so as to prevent communication between the outer and inner branches when the bells are in a lowered position. Thus when the bell a is raised gas can flow from the section 30 through the branches 34, 35 in the bell a and the pipe 6, 10 to below the bell d and above the bell c, and to the section 31 from below the bell c and above the bell d through the pipe 6, 10 and the branches 36, 33 in the bell a, the branches in the lowered bell b being isolated by the liquid seal.