RU135020U1 - UNIVERSAL STAND FOR INTEGRATED TESTS OF OIL MAIN PUMPS OF VARIOUS PRODUCTIVITY - Google Patents

Abstract

A universal bench for complex testing of oil main pumps of various capacities, comprising a bench-mounted electric motor, a bench hydraulic coupling and a test pump, the shafts of which are coaxially mounted, and a bench pipeline to which the suction and discharge pipes of the pump under test are connected characterized in that the electric motor and fluid coupling frames are stationary, the pump frame is interchangeable for each of the type of pump, and the nozzles of the pump under test are connected to the bench pipeline through interchangeable adapters, each of which is made in the form of a transition and two outlets consecutively welded to each other.

Description

The utility model relates to mechanical engineering, namely to the design of stands for complex tests (factory, acceptance tests, parametric, etc. tests) of large oil main pumps of various capacities.

As a prototype, a test bench for complex testing of large-capacity oil main pumps was selected, which contains a bench-mounted electric motor, a bench hydraulic coupling and a test pump, the shafts of which are coaxially mounted, and a bench pipe to which suction and discharge pipes are connected of the tested pump [RF patent for utility model No. 100149, IPC F04B 51/00, application No. 201029023/06 of 07/13/2010]. A disadvantage of the known stand is limited functionality, since it is designed to test pumps with certain overall and mounting dimensions and characteristics.

The technical problem to which the proposed utility model is aimed is to create a universal bench for complex tests (parametric, efficiency, supply, pressure, cavitation reserve, etc.) of a line of high-capacity oil main pumps with the possibility of quick and easy readjustment for testing pumps with various overall and mounting dimensions.

This goal is achieved by the fact that in the test bench for complex testing of oil main pumps of various capacities, which contains a bench-mounted electric motor, a bench hydraulic coupling and a test pump, the shafts of which are coaxially mounted, and a bench pipe to which a suction pipe is connected and discharge nozzles of the pump under test, according to a utility model, the frame of the electric motor and the fluid coupling are stationary, the frame is not the pump is made replaceable for each type of pump, and the nozzles of the pump under test are connected to the bench pipeline through removable adapters, each of which is made in the form of a transition and two branches that are successively welded to each other.

A comparative analysis of the proposed stand with the prototype and with other solutions in the art shows that the set of features set forth in the patent formula is unknown from the existing level of technology, on the basis of which we can conclude that it meets the criterion of the useful model of "novelty".

The compliance of the proposed solution with the criterion of "industrial applicability" can be seen from the following example of a specific implementation of the stand.

The utility model is illustrated by drawings, which shows a General view of the stand for complex testing of oil main pumps of various capacities: Figure 1 - view of the stand with the tested main pump with a capacity of 1200 m ^{3 /} / h, Figure 2 is the same with a capacity of 10000 m ^{3 /} / h, Figure 3 is a General view of the stand with an electric motor and a fluid coupling.

The list of positions in the drawings.

1 - electric motor;

2 - bench frame of the electric motor;

3 - fluid coupling;

4 - test pump;

5 - bench frame fluid coupling;

6 - interchangeable frame of the tested pump;

7 - anchor bolt;

8 - a nut;

9 - motor shaft;

10 - input (driven) shaft of the fluid coupling;

11 - elastic-plate coupling;

12 - output (leading) shaft of the fluid coupling;

13 - pump shaft;

14 - elastic-plate coupling;

15 - suction pipe of the pump;

16 - discharge pipe of the pump;

17 - bench pipeline;

18 - adapter;

19 - transition;

20 - tap

Δ is the misalignment between the nozzles 15, 16 and the pipe 17.

A universal bench for complex testing of oil main pumps of various capacities contains an electric motor 1 mounted on a stationary bench frame 2, as well as a fluid coupling 3 and an oil main pump 4. The hydraulic coupling 3 is mounted on a stationary bench frame 5. Pump 4 is mounted on a removable frame 6 with the possibility of coaxial combining its shaft with the fluid coupling shaft 3. Frames 2 and 5 are fixed to the vibration-insulated foundation using anchor bolts 7 with nuts 8. The shaft 9 of the electric motor 1 is connected to the input shaft 10 g the clutch 3 through the clutch 11, and the output shaft 12 of the hydraulic clutch 3 is connected to the shaft 13 of the pump 4 through the clutch 14. As the clutch 11, 14 used elastic plate torsion clutch, combining the distortion compensation and protection against destruction of the connected shafts, as well as remote measurement torque, for example, ART-8 RHM 202-8 coupling of A. firm Friedr. Flender AG "(Germany).

The nozzles 15, 16 of the pump 4 are connected to the bench pipeline 17 (hydraulic circuit of the bench) through adapters 18, which compensate for the misalignment Δ between the nozzles 15, 16 and the pipe 17. The adapters 18 are made in the form of a successively welded transition 19 and two branches 20.

The work of the stand is as follows.

According to a given algorithm (program and test procedure), a standard sequence of operations is performed in accordance with the type of test (parametric, acceptance, certification, etc.) in a known manner (i.e., determine the flow rate, measure the pressure at the inlet and outlet of the pump, and t .P.). To determine the energy characteristics of the pump, torque values are measured on the shaft 9 of the electric motor 1 and the shaft 13 of the pump 4 with pre-calibrated torsion bars of the couplings 11, 14. The connection of the nozzles 15, 16 of the pump 4 to the stand pipe 17 through adapters 18 allows the connection of any oil main pumps to the stand 4 with various overall and mounting dimensions and performance characteristics.

Using the proposed utility model provides the creation of a universal stand for complex testing of large oil main pumps of various capacities.

Claims (1)

A universal bench for complex testing of oil main pumps of various capacities, comprising a bench-mounted electric motor, a bench hydraulic coupling and a test pump, the shafts of which are coaxially mounted, and a bench pipeline to which the suction and discharge pipes of the pump under test are connected characterized in that the electric motor and fluid coupling frames are stationary, the pump frame is interchangeable for each of the type of pump, and the nozzles of the pump under test are connected to the bench pipeline through interchangeable adapters, each of which is made in the form of a transition and two outlets consecutively welded to each other.

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