CN1995951A

CN1995951A - Gasoline filter impulse test device

Info

Publication number: CN1995951A
Application number: CNA200610130055XA
Authority: CN
Inventors: 刘金林; 刘强; 冯利敏
Original assignee: TIANJIN CITY TIANYI SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: TIANJIN CITY TIANYI SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2006-12-12
Filing date: 2006-12-12
Publication date: 2007-07-11
Anticipated expiration: 2026-12-12
Also published as: CN100451601C

Abstract

The invention relates to gasoline filter pulse testing equipment. It comprises No. 1 pressure liquid storage can controlled by No. 1 pneumatic control circuit and No. 2 pressure liquid storage can controlled by No. 2 pneumatic control circuit, entering into filter element through oil hydraulic bridge circuit and ball valve, pressure aperture controlled by pressure transducer transmitting the electrical control signal to high and low pressure control air valve, allowing the filter element alternately working under two pressures, making the working media returning to No. 2 pressure liquid storage can through the oil hydraulic control circuit. When the No. 1 pressure liquid storage can reach the lowest level, the No. 2 pneumatic logical circuit reversely presses the working media to the oil hydraulic control circuit till the preset testing number. The oil hydraulic system works in sealing status, with stable oil pressure, with simple structure and low cost.

Description

Gasoline filter impulse test device

[technical field]:

The present invention relates to the impulse test device in the detection technique field, particularly a kind of gasoline filter of motor benzine filter cleaner.

[background technology]:

Usually, in order to reflect motor benzine filter cleaner time of day in actual applications, each filter cleaner must provide relevant parameter to its performance before actual dispatching from the factory, as the pulse performance etc. of test gasoline filter.

Because gasoline is a kind of flammable and explosive substance, if the participation of electric signal is arranged in test, be very easy to blast, can't satisfy the safety standard of national regulation, so in test unit in the past, have other liquid such as utilizing kerosene to do the situation of medium, but this test condition can not truly reflect the actual working state of filter cleaner.

[summary of the invention]: the objective of the invention is to solve the actual working state that the test unit that uses kerosene test filter cleaner can not truly reflect filter cleaner, and use gasoline in test because of the participation of electric signal is arranged, the problem that is very easy to blast provides a kind of gasoline filter impulse test device.

Gasoline filter impulse test device provided by the invention comprises, by first pressure fluid reservoir of first gas control logical circuit control and the second pressure fluid reservoir of controlling by the second gas control logical circuit, after actuating medium in the first pressure fluid reservoir at first is depressed into the oil pressure control loop, pass through the oil pressure bridge type return again, the 5th ball valve enters the gasoline filter filter core, the actuating medium that flows out through filter core is successively through the 6th ball valve, behind the throttling valve, divide two-way to pass through respectively and get back to the second pressure fluid reservoir after high voltage control air valve and low voltage control air valve enter the oil pressure control loop once more, pressure diaphragm device by pressure unit control is connected between the 6th ball valve and the throttling valve, and automatically controlled signal is delivered to high voltage control air valve and low voltage control air valve, make filter core alternation under two pressure states; When the liquid level of the first pressure fluid reservoir drops to when minimum, the second gas control logical circuit is started working, and actuating medium oppositely is depressed into the oil pressure control loop by the second pressure fluid reservoir, so moves in circles, and ends up to the test number (TN) of setting.

Advantage of the present invention and effect: the present invention has invented this test unit according to the standard of country about filter impulse test.This test unit can correctly be simulated its duty, measures its performance, and performance parameter accurately is provided, and apparatus of the present invention have following advantage simultaneously:

1. this test unit can reach requirement of explosion proof;

This testing equipment provided by the invention is simulated the correct duty of filter cleaner fully, and has effectively solved the explosion-proof problem of gasoline medium.

2. the oil pressure of this test unit is steady, meets the practical working situation of filter cleaner;

First: if adopt the electric motor of automobile pump, flow, pressure have nothing in common with each other, and are easy to generate electric spark during machine operation, so it is quite dangerous to do medium with gasoline;

Second: select common oil pump for use, working pressure is very difficult to oil pump at 1Kg_5Kg;

The the 3rd: select for use membrane pump can satisfy testing requirements, but membrane pump work itself time has pulse, can influence the experimental performance parameter of filter core;

Based on the problem of above existence, the present invention has designed two pressure fluid reservoirs on this test unit, can provide oil hydraulic circuit very stably for the filter core test, so just can correctly determine very accurate data.

3. oil hydraulic system is worked under air-tight state;

Two pressure fluid reservoirs are by oil pressure control loop transmit fluid back and forth, and test(ing) medium---gasoline only needs the amount of a fluid reservoir volume just passable, accomplished energy-conservation, clean, attractive in appearance and reduced cost.

4. component structure is simple, and cost is low;

Two fluid reservoirs offer the test condition of filter core by two cover pneumatic logic loops and a cover oil pressure control loop, the element that adopt in the The whole control loop all is common gas control element, Hydraulic Elements, not only make on this test unit structure very simply, and cost is low, and procurement cycle is short.

[description of drawings]:

Fig. 1 is a gasoline filter impulse test device systematic schematic diagram provided by the invention;

Fig. 2 is electrical equipment control schematic diagram (1);

Fig. 3 is electrical equipment control schematic diagram (2)

[embodiment]:

Embodiment 1:

Content of the test:

Filter cleaner is installed on the testing table, filter cleaner is pressurizeed, be pressurized to 490KPa, stop pressurization when making it drop to 98KPa, be pressurized to 490KPa once more, so repeatedly 4 * 10 by 98KPa ⁴Inferior, test its performance.

Principle of work:

As shown in Figure 1, gasoline filter impulse test device provided by the invention comprises, by first pressure fluid reservoir 1 of the first gas control logical circuit, 1 control and the second pressure fluid reservoir of controlling by the second gas control logical circuit 22, after actuating medium in the first pressure fluid reservoir at first is depressed into the oil pressure control loop, pass through the oil pressure bridge type return again, the 5th ball valve 5 enters the gasoline filter filter core, the actuating medium that flows out through filter core is successively through the 6th ball valve 6, behind the throttling valve, divide two-way to pass through respectively and get back to the second pressure fluid reservoir 2 after high voltage control air valve H and low voltage control air valve L enter the oil pressure control loop once more, pressure diaphragm device by pressure unit control is connected between the 6th ball valve and the throttling valve, and automatically controlled signal is delivered to high voltage control air valve and low voltage control air valve, make filter core alternation under two pressure states; When the liquid level of the first pressure fluid reservoir drops to when minimum, the second gas control logical circuit is started working, actuating medium oppositely is depressed into the oil pressure control loop by the second pressure fluid reservoir, so move in circles, system's " off-test " pilot lamp is bright when reaching test set point number (can by the prefabricated setting of digital display meter) always, and simultaneity factor quits work.Concrete control circuit is referring to Fig. 2, Fig. 3.

The pressure signal input digital display meter that electrical equipment control of the present invention---pressure unit collects, alarm for high voltage and low pressure alarming value are set in digital display meter, the pressure signal of pressure unit input is respectively by the commutation of high and low pressure alarming value output electric signal control electromagnetic valve, thus control J2 and J3 action; Test counter JS is once just imported electric signal in the every action of J2, finishes once experiment numeration, off-test when the limit that reaches the setting of test counter is counted, and system quits work, and the tester rolling counters forward resets.

Claims

1, a kind of gasoline filter impulse test device, it is characterized in that this test unit comprises by first pressure fluid reservoir of first gas control logical circuit control and the second pressure fluid reservoir of being controlled by the second gas control logical circuit, after actuating medium in the first pressure fluid reservoir at first is depressed into the oil pressure control loop, pass through the oil pressure bridge type return again, the 5th ball valve enters the gasoline filter filter core, the actuating medium that flows out through filter core is successively through the 6th ball valve, behind the throttling valve, divide two-way to pass through respectively and get back to the second pressure fluid reservoir after high voltage control air valve and low voltage control air valve enter the oil pressure control loop once more, pressure diaphragm device by pressure unit control is connected between the 6th ball valve and the throttling valve, and automatically controlled signal is delivered to high voltage control air valve and low voltage control air valve, make filter core alternation under two pressure states; When the liquid level of the first pressure fluid reservoir drops to when minimum, the second gas control logical circuit is started working, and actuating medium oppositely is depressed into the oil pressure control loop by the second pressure fluid reservoir, so moves in circles, and ends up to the test number (TN) of setting.