Hydraulic-electric drive of coal mine pumping units
Abstract
In conditions of coal mines regulation of centrifugal pumps is either not applied at all, or is carried out by a gate valve, which leads to deterioration of efficiency of the pumping unit and, consequently, to overconsumption of energy for drainage. As the survey data of a number of mines show, the nominal head of the installed pumps often significantly exceeds the head required to overcome static and dynamic resistances at the nominal capacity of the pumping unit. This, in turn, in order to avoid inadmissible overloading of the drive motor, leads to the need for prolonged operation of pumps with the gate valve partially closed, i.e. with significant unproductive losses. According to A. I. Veselov, the gauge nominal head of the installed pumps often significantly exceeds the head required to overcome the geodetic height of discharge, and the capacity of pumps is selected with a large reserve. Referring, for example, to the mines of Kizelovsky district, A. I. Veselov writes: “The largest dewatering installations of the mines named after V. I. Lenin and M. M. Volodarsky work with an excessive head reserve, and hence, naturally, low efficiency of the unit. The V. I. Lenin mine at the main pumping stations has an excessive installed capacity of pumps, which is equal to almost five times the normal inflow.
None
References
- Veselov A.I. Pumping of Mines. Metallurgizdat, 1947. (in Russian)
- Pak, V.S. and Geyer, V.G. Mine Fan and Dewatering Installations. Ugletekhizdat, 1950. (in Russian)
- Lishchenko S.A. Regulation of Pumps Operation at Water Pumping Stations. Stroyizdat, 1949. (in Russian)
- Razumov B.A. Improvement of the Energy Mode of Centrifugal Pumps and Fans. Sbornik informatsionnykh materialov Energosbyta Lenenergo , Vol. II, 1947. (in Russian)
- Kostochkin V.N. Traction and Blowing Installations of Central Power Plants. Gosenergoizdat, 1950. (in Russian)
- Chivilkin M.P. Measures for energy saving in pumping installations. Promyshlennost' i energetika , 1952, No. 7. (in Russian)
- Geyer, V.G. and Belikov, P.F. Automated Drainage Plants. Uglegletekhizdat, 1952. (in Russian)
- Problems of Automation in the Coal Industry. Collection of articles. Uglegletekhizdat, 1953. (in Russian)
- Ozernoi M.I. Mining Electrical Engineering. Uglegletekhizdat, 1951. (in Russian)
- Pumps: Catalog-Reference Book, Mashgiz, 1953. (in Russian)
- Catalogs of electrical equipment of MEP, vol. 1, 1953. (in Russian)