RU186483U1 - MOBILE STAND FOR TESTING AND SETTING PISTON AND PISTON PUMP SECURITY VALVES - Google Patents

Abstract

The invention relates to devices for testing and adjusting built-in safety valves of piston and plunger pumps. Essence: the device is made in the form of a stand mounted on a movable frame (7) containing a container (4) with a working medium, a plunger hydraulic pump (5) with a manual drive. A control pressure gauge (1) is installed on the discharge line of the hydraulic pump (5). The discharge line is connected to the pump unit with an integrated safety valve (10). EFFECT: increased efficiency of testing and tuning of mounted safety valves of piston and plunger pumps. 1 ill.

Description

The proposed device relates to hydraulic equipment in the oil and gas industry, and specifically to devices for testing and tuning hydraulic equipment.

This proposal is industrially applicable, since the process of testing and setting safety valves using a mobile stand is carried out using structural elements known in the art.

According to the prior art, a mobile stand for testing and adjusting the safety valves of piston and plunger pumps relates to auxiliary equipment, in particular for testing hydraulic equipment.

The safety valve of piston and plunger pumps (brands of type 2.5T, PT, PTR and analogs), built into the hydraulic part of the pump, serves to protect the pump from pressure overloads and is adjusted to bypass the entire supply to the suction cavity at a pressure of not more than 150% of outlet pressure. The full bypass pressure is controlled by preloading the valve spring at the installation site on the pump.

From the information about the analogs, the “Valve Testing Stand” device (RU No. 88093 U1 F16K 15/18) is known, the disadvantages of which are the low quality of the test and adjustment accuracy, the complexity of the design, as well as the inconvenience of use and the practical inapplicability for testing and tuning the built-in safety valves into the hydraulic part of the pump (grades of type 2.5T, PT, PTR and analogues).

The functional purpose of the similar device “Stand for testing a safety valve” (RU No. 162141 U1 G01M 3/26) is intended for testing, adjusting and checking for leaks only for safety valves removed from the protected equipment. The disadvantages of the device are stationary performance, design complexity and the use of sources of overpressure (high pressure cylinder with gas).

Devices “Stand for crimping and testing equipment” (RU No. 40649 U1 Е21В 47/00) and “Device for testing equipment” (see AS USSR No. 697701, Е21В 47/00, 1979), allowing testing instruments, technical devices and equipment, have a complex structure, due to the use of two low and high pressure pumps, and a stationary design that does not allow for the on-site test.

The well-known "Stand for pressure testing of gas-and-oilfield equipment" (patent RU No. 2190081, according to IPC ЕВВ 33/03, 2002), consisting of a high-pressure pump unit, discharge lines, control, regulation and pressure control of the pumped working fluid. The disadvantage is the stationary performance and the unreliability of the stand due to the ingress of contaminated working fluid from the equipment under test during pressure relief from it.

Device RU No. 127915 U1 G01M 13/00 “Stand for testing and setting safety valves”, consisting of a tank with a manual screw hydraulic press and a flange connection for installing a safety valve, differs from previous analogues in its simpler design and accuracy of adjustment, but a disadvantage the prototype is a functional purpose, excluding the possibility of application for safety valves built into the hydraulic part of the pump.

Thus, most of the known devices and analogues are designed to configure the safety valves, dismantled for testing on the bench, and are not intended for non-separable safety valves, built into the equipment.

The technical result when using a mobile stand for testing and adjusting the safety valves of piston and plunger pumps is to increase the efficiency of testing and tuning the safety valves together with the hydraulic part of the pump, thanks to the created device design.

The technical result is achieved by a mobile stand for testing and adjusting the safety valves of piston and plunger pumps containing a manual hydraulic pump, a tank and forming, together with hydraulic fittings connected to it, a system for controlled valve loading with a working medium equipped with connecting fittings, characterized in that the stand design is made in a mobile execution on a mobile frame with connection of the discharge line to the pump unit with mounted safety valve elements and changes operating environment settings are made in the form of a hydraulic plunger pump with a manual drive, which is installed at the outlet pressure gauge and a drain valve.

The technical nature is illustrated in FIG. 1. "Mobile stand for testing and setting the safety valves of piston and plunger pumps", which consists of the following structural elements:

1 - pressure gauge;

2 - a hose of a high pressure;

3 - flange;

4 - capacity;

5 - a hydraulic pump;

6 - ball valve;

7 - mobile frame;

8 - valve;

9 - valve;

10 - safety valve of the pump.

The proposed design of the mobile stand for testing and setting the safety valves of piston and plunger pumps works as follows: the control pressure gauge 1 is installed on the discharge line of the manual hydraulic pump 5 through valve 8. The pump cavity is filled with working fluid from the tank 4. Pressure is applied using the hydraulic manual pump 5 through the high pressure hose 2 and flange 3 to the hydraulic unit of the pump. For the release of air mass, as well as pressure relief, a relief valve 9 is installed. The response value of the safety valve 10 is visually determined by the arrow of the control pressure gauge 1. In the event of a valve mismatch during pressure increase, the safety valve 10 is adjusted to the required pressure limit according to the specified parameters safety valve actuation. The test process is repeated until the safety valve trips in the required pressure limit parameters.

The proposed design of a mobile stand for testing and adjusting the safety valves of piston and plunger pumps allows you to configure the safety valves in the range from 0.1 MPa to 2 MPa.

What is new is that the mobile unit does not require dismantling the safety valve. The use of similar stationary stands requires the dismantling of the valve from the valve body, and the dismantling of the valve associated with this, which significantly reduces the accuracy of the installation. In addition, the design of the valves of these brands of pumps does not provide the ability to configure on specialized stands, and requires the manufacture of special adapters.

Claims (1)

A mobile stand for testing and adjusting the safety valves of piston and plunger pumps, containing a manual hydraulic pump, a tank and forming, together with the hydraulic fittings connected to it, a system for controlled loading of the valve with a working medium, equipped with connecting fittings, characterized in that the stand design is made in a mobile version a mobile frame with a discharge line connected to the pump unit with a built-in safety valve, and the elements of the change in pairs ters working medium embodied as a hydraulic plunger pump with a manual drive, which is installed at the outlet pressure gauge and a drain valve.

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