CN2167439Y

CN2167439Y - Imitating volume outputting pressure-difference type pressure relay

Info

Publication number: CN2167439Y
Application number: CN 93233387
Authority: CN
Inventors: 杨晓红
Original assignee: 王先锦
Priority date: 1993-03-05
Filing date: 1993-03-05
Publication date: 1994-06-01
Anticipated expiration: 2003-03-05

Abstract

The utility model relates to a novel imitating volume outputting pressure-difference type pressure relay. Two holes P < 1 > and P < 2 > are arranged on the pressure relay body, and one end of each hole is respectively connected with the inlet and the outlet of a one-way throttle valve (or a throttle valve, a speed regulating valve, a one-way speed regulating valve), and the other end is respectively connected with a pressure sensor [7]; the pressure signal is changed into the electric signal through the sensor and is input to a computer (or computer) [8], and whether the signal is exported (or terminated) is judged through the computer sampling. The utility model is used for the occasion that the hydraulic signal is changed into the electric signal by the transmission machinery with integrated machine, electricity and liquid.

Description

Imitating volume outputting pressure-difference type pressure relay

The utility model relates to a kind of Hydraulic Elements---and analog quantity is exported differential pressure switch.

Shown in Figure 1 is a kind of differential pressure switch of switching value output, and it is lower that it is used for the computer-controlled Circuits System precision of mechanical-electrical-hydraulic integration.

The utility model is the differential pressure switch that has proposed the analog quantity output that a kind of system of suitable mechanical-electrical-hydraulic integration uses.

Fig. 2 is a fundamental diagram of the present utility model, the existing operation principle that it is described in conjunction with Fig. 2:

When oil cylinder G moves right, produce pressure in the import and export of one-way throttle valve and fall P ₁＞P ₂, and P ₁And P ₂The cut-in pressure transducer changes pressure signal into electric signal input computer (or computer) by transducer and works as P respectively ₁＞P ₂The time, computer (or computer) is output signal not.When oil cylinder G moved to right to terminal, disappearance fell in the pressure at one-way throttle valve two ends, works as P ₁≤ P ₂The time, computer (or computer) output signal.When oil cylinder G moves to left, P ₂Logical oil return, P ₁＞P ₂, output signal not.

Fig. 3 is a structure chart of the present utility model, the existing architectural feature that it is described in conjunction with Fig. 3:

Analog quantity is exported differential pressure switch and is made up of pressure switch body, pressure sensor, computer (or computer).On the pressure switch body, P is arranged ₁And P ₂Two holes, one end in two holes inserts the import and export of one-way throttle valve (or choke valve, governing valve, unidirectional governing valve) respectively, the other end is the cut-in pressure transducer respectively, by transducer pressure signal is changed into electric signal input computer (or computer), judge whether output (or termination) signal through computer (or computer).［ 1 ］, ［ 2 ］, ［ 3 ］, ［ 4 ］ four apertures play pressure stabilization function, ［ 5 ］ are induction pieces.

The utility model has board-like connection, and tubular type connects, and superposing type connects.

The utility model is simple in structure, and reliable operation is applicable to that the machinery of mechanical-electrical-hydraulic integration changes the hydraulic pressure signal into the occasion of electric signal.

Claims

1, a kind of analog quantity is exported differential pressure switch, is made up of pressure switch body [6], pressure sensor [7] and computer (or computer) [8], it is characterized in that on the pressure switch body [6] P being arranged ₁And P ₂Two holes, an end in two holes is cut-in pressure transducer [7] respectively, changes pressure signal into electric signal input computer [8] by transducer [7], and [1], [2], [3], [4] four apertures of pressure stabilization function have been arranged on the body [6], and induction pieces [5].

2, export differential pressure switch by the analog quantity of claim 1, it is characterized in that having board-like connection, tubular type connects, and superposing type connects.