RU40649U1 - STAND FOR TESTING AND TESTING OF EQUIPMENT - Google Patents

Abstract

A stand for crimping and testing equipment, including a test chamber, low and high pressure pumps, storage tanks for working and clean liquids and connecting pipelines, characterized in that the stand is equipped with an additional low-pressure high-pressure pump and an adjustable safety valve installed at the outlet of the high-pressure pumps pressure, and the low-pressure reversible pump is connected, on the one hand, to the reservoir for storing the working fluid, on the other hand, is connected to the bottom astyu test chamber through the filters and check valves, and also connected to them through a bypass line with check valves, the top of the test chamber is installed for fitting the discharge and suction of air, and pressure relief.

Description

The proposal relates to techniques for testing instruments, devices and equipment operating at high pressures and can be used in the oil and gas industry.

The well-known "Stand for crimping gas-oil field equipment" (see patent RU No. 2190081, IPC E 21 B 33/03, 2002), consisting of a high-pressure pump unit, discharge lines, control, regulation and control of the pressure of the injected working fluid.

The disadvantage is the unreliability of the stand due to the ingress of contaminated working fluid from the equipment under test during pressure relief from it.

Closest to the proposed model in technical essence is the "Device for testing equipment" (see AS USSR No. 697701, E 21 B 47/00, 1979), containing a test chamber, high and low pressure pumps, tanks for working and clean liquids, distribution mechanism, pressure vessel and connecting pipelines.

The disadvantages of the prototype are:

- low reliability during operation, since when applying high pressure, it is possible to force the diaphragm into the perforated pipe and violate its tightness;

- poor quality test results due to pulsating pressure growth.

The technical task of the proposed stand for crimping and testing equipment is to increase the reliability of its work due to

elimination of pressure vessels and contaminated working fluid entering the pumps, as well as installing an adjustable safety valve at the outlet of the high pressure pumps, improving the quality of tests by reducing high pressure pulsations and air discharge when the test chamber is filled with working fluid.

The technical task is solved by the proposed bench for crimping and testing equipment, including a test chamber, low and high pressure pumps, storage tanks for working and clean liquids and connecting pipelines.

New is that the stand is equipped with an additional low-pressure high-pressure pump and an adjustable safety valve installed at the outlet of the high-pressure pumps, and the low-pressure reversible pump is connected, on the one hand, to the reservoir for storing the working fluid, and, on the other hand, is connected to the lower part of the test chamber through filters and non-return valves, and also connected to them through bypass lines with non-return valves, a discharge fitting is installed in the upper part of the test chamber and air leaks, as well as pressure relief.

The figure shows a schematic diagram of the stand.

The stand for crimping and testing equipment (see figure), including test chamber 1, high pressure 2 and low 3 pressure pumps, storage tanks for working 4 and clean 5 liquids and connecting pipelines 6, 7, 8, is equipped with a low pressure high pressure pump 9 and an adjustable safety valve 10. The low-pressure reversing pump 3 is connected, on the one hand, to the reservoir for storing the working fluid 4, on the other hand, is connected to the lower part of the test chamber 1 through filters 11, 12 and check valves 13, 14, and also connected to them through bypass lines with non-return valves 15, 16. In the upper part of the test chamber 1, a fitting with a valve 17 is installed, connected by a pipe 6 with

a reservoir for storing the working fluid 4. A pressure gauge 18 is installed on the high pressure pipe. Valve 19 is installed on the low pressure pipe.

The stand works as follows.

A low pressure pipe 7 is connected to the lower part of the test chamber 1 through valve 19 and a high pressure pipe 8, and a drain pipe 6 is connected to the upper part of the test chamber 1 through valve 17. When valves 17 and 19 are open, the low-pressure reversible pump 3 from reservoir 4 the liquid through the pipeline 7 is fed into the test chamber 1 through the filter 11, check valves 13, 16 and valve 19, which eliminates the ingress of contaminants of the working fluid into the low pressure reversible pump 3. Moreover, from the test chamber 1, the air through the valve 17 and the pipe 6 is forced into the reservoir for storing the working fluid 4, excluding the formation of an air cushion in the test chamber 1, which reduces the quality of the tests. After filling the test chamber 1 with the working fluid, the valves 17 and 19 are closed. The safety valve 10 is adjusted to the maximum permissible pressure during the test. The high-pressure pump 2 through the high-pressure pipe 8 with pure liquid from the reservoir 5 in the test chamber 1 is previously pressurized below the pressure required for pressure testing or testing. In this case, possible pressure surges above the maximum permissible during testing due to the pulsating mode of operation of the high pressure pump, usually a plunger, are discharged by the safety valve 10 into the reservoir for storing clean liquid 5, which increases the reliability and quality of the tests. Then, with pure liquid from the reservoir 5, a low-pressure high-pressure pump 9 through the high-pressure pipeline 8 in the test chamber 1 gradually increases the pressure to the required pressure value or test. Smooth pressure rise is especially important, for example, when determining the cut-off pressure

pins, bursting diaphragms, etc. while the safety valve 10 prevents the possibility of excess pressure in the test chamber 1 above a predetermined one, which also increases the reliability and quality of the tests.

After the test, open valve 17 and relieve excess pressure in the test chamber 1 through line 6 to the reservoir for storing working fluid 4, open valve 19 and use a reversible low-pressure pump 3 to pump liquid from the test chamber through line 7 through filter 12, check valves 14 and 15 into the reservoir for storing the working fluid 4, which eliminates the ingress of contaminants from the test chamber 1 together with the working fluid into the high 2.9 and low 3 pressure pumps. At the same time, through the pipe 6 through the valve 17 into the test chamber 1 is the air suction.

The bench for crimping and testing equipment can improve the reliability of its operation by eliminating high pressure vessels and the ingress of contamination of the working fluid into low and high pressure pumps, as well as installing an adjustable safety valve at the outlet of high pressure pumps, and improving the quality of tests by reducing high pressure pulsations and air discharge when the test chamber is filled with working fluid.

Claims (1)

A stand for crimping and testing equipment, including a test chamber, low and high pressure pumps, storage tanks for working and clean liquids and connecting pipelines, characterized in that the stand is equipped with an additional low-pressure high-pressure pump and an adjustable safety valve installed at the outlet of the high-pressure pumps pressure, and the low-pressure reversible pump is connected, on the one hand, to the reservoir for storing the working fluid, on the other hand, is connected to the bottom astyu test chamber through the filters and check valves, and also connected to them through a bypass line with check valves, the top of the test chamber is installed for fitting the discharge and suction of air, and pressure relief.