CN201293009Y - Control and protection device for high-pressure static pressure oil source - Google Patents

Abstract

The utility model discloses a control protection device of a high-pressure and static-pressure oil source, which relates to an electric vibration system in mechanical environment testing equipment. The control protection device adopts the rotation operating condition of a table body to control a power source circuit of the high-pressure and static-pressure oil source through a travel switch and a contactor; the control protection device adopts a pressure switch to monitor and protect the oil pressure in an oil pumping pipeline and an oil returning pipeline; the control protection device adopts a temperature sensor to monitor and protect the temperature of an oil tank; and the control protection device adopts the combination of a pressure regulating valve and a pressure gauge to adjust the pressure of an oil duct. Because each key component of the high-pressure oil source system of an electric vibration table is monitored in the technical scheme, the electric vibration table system can perform real-time alarming protection when an arbitrary circuit is abnormal. The interlock protection ensures that when failures are happened to the oil source system of the electric vibration table, the testing can be immediately stopped, and the symptom can be intuitively displayed, thereby the security and the reliability of the system can be greatly improved.

Description

The control protective gear of high pressure static pressure oil sources

Technical field

The utility model relates to the electric vibrating system in the dynamic environmental test equipment, particularly the control protective gear of electric vibrating system high pressure static pressure oil sources.This control protective gear is used for startup, working state control and the protection of high pressure static pressure oil sources.

Background technique

The high pressure hydrostatic bearing is because characteristics such as bearing capacity height, anti-bias load performance be strong, obtained using widely in the horizontal sliding table of electric vibrating system and multi system.High pressure static pressure oil supply system in the electric vibrating system comprises structures such as oil well pump, dump pump, fuel tank, cooling unit and pipeline usually.Because characteristics such as the oil sources pipeline is many, and oil pressure height and flow are big cause oily temperature rise easily, thereby will monitor oil circuit pressure, fuel tank temperature etc. when oil is cooled off.These characteristics of high pressure static pressure oil supply system have determined its control more complicated, and therefore control and the protection that in the electric vibrating system high pressure static pressure oil supply system is held water is very necessary.When oil circuit occurs when unusual, the electric vibrating system in time shuts down and provides alarm signal.

Summary of the invention

The utility model is from the angle of system; multianalysis the fault and the misoperation that may occur in the working state of the high pressure static pressure oil sources in the electric vibrating system and the work; these states have been carried out optimum organization; a kind of control and protective gear of high pressure static pressure oil sources are provided, and its purpose is to improve the Security and the reliability of whole electric vibrating system works.

For achieving the above object, the technical solution adopted in the utility model is: a kind of control protective gear of high pressure static pressure oil sources, comprise position limit switch S, acting surface, the first contactor KM1 and the second contactor KM2, in described position limit switch S and the acting surface, one is located on the stage body, another is located on the support of supporting stage body, acting surface contacts with position limit switch S and makes position limit switch S make contact when stage body is turned to the horizontal operation state, and acting surface separates with position limit switch S position limit switch S contact is disconnected when stage body is turned to vertical working state; The contact of position limit switch S is connected in the power loop of the first contactor KM1 coil, the contact of the first contactor KM1 is connected in the power loop of the second contactor KM2 coil, the contact of the second contactor KM2 is connected in the power control loop of oil well pump and dump pump, constitutes power control circuit to oil well pump and dump pump with this.

Related content in the technique scheme is explained as follows:

1, in the such scheme, described " position limit switch " is meant the switch that utilizes a movement travel to touch.Refer to the electrodynamic vibration generator stage body is turned to the horizontal operation state from vertical working state rotational travel in movement travel described in this programme.Because stage body can independently be engaged in the vibration test of Vertical direction under vertical working state, and under the horizontal operation state, cooperate the vibration test that to be engaged in substantially horizontal with horizontal sliding table.Described " acting surface " is meant and the interactional working surface of position limit switch.When this working surface was located on the stage body, position limit switch should be located on the support of supporting stage body; When this working surface is located on the support, position limit switch should be located on the stage body.In the electrodynamic vibration generator structure, the relative ground of support is fixed, and the relative support of stage body can overturn and is vertical and two kinds of working staties of level.Because not needing horizontal sliding table to cooperate under vertical working state, stage body can not work alone, under the horizontal operation state, need to cooperate and carry out work with horizontal slip, and the table top of horizontal slip needs the supporting of high pressure hydrostatic bearing when vibrating in the horizontal direction, so this programme utilizes the flip-flop movement of stage body and controls the power loop of high pressure static pressure oil sources by position limit switch, closes the power loop of high pressure static pressure oil sources when stage body is in vertical working state automatically; When stage body is in the horizontal operation state, open the power loop of high pressure static pressure oil sources automatically, thereby constitute power supply control oil well pump and dump pump.

2; in the such scheme; when the oil pressure in high pressure static pressure pumping pipelines and the oil returning tube occurs when unusual; in order to protect high pressure static pressure oil supply system; avoid pumping pressure anomaly or oil return do not have situations such as pressure; can on pumping pipelines and oil returning tube, distinguish the setting pressure switch; the output terminal of two pressure switches is connected with the input end of a fault-detecting circuit respectively; when the oil pressure in pumping pipelines and the oil returning tube exceeds the pressure control range of corresponding pressure switch; corresponding pressure switch action; the fault-detecting circuit output alarm signal constitutes oil pressure abnormal monitoring warning circuit in pumping pipelines and the oil returning tube respectively with this.

3, in the such scheme,, cause oily temperature rise easily, therefore when adopting cooling unit that oil is cooled off, can monitor and protect the fuel tank temperature because the high pressure static pressure oil supply system of electrodynamic vibration generator oil pressure height, flow when work is big.In order to realize this function, can be in fuel tank mounting temperature sensor, temperature transducer is connected with the input end of described fault-detecting circuit, and fault-detecting circuit output alarm signal when the oil temperature in the fuel tank surpasses permitted value constitutes the warm overheated monitoring alarm circuit of oil in the fuel tank with this.

4, in the such scheme, in order to observe and regulate the oil pressure in the pumping pipelines, can be on pumping pipelines setting pressure table and pressure regulator valve, be respectively applied for pressure measurement and show and adjust oil circuit pressure, adjusted and controlled with this oil pressure that constitutes in the pumping pipelines.

5, the fault-detecting circuit of mentioning in the above scheme explanation adopts prior art and designs as the case may be.Monitoring alarm as specific pressure and temperature can adopt comparison circuit to realize by comparator.

Because the utilization of technique scheme; advantage that the present invention compared with prior art has and effect: the realization of this programme makes each critical component of high pressure fuel source system of electrodynamic vibration generator all monitor, and the electrodynamic vibration generator system all realizes alarm and protection immediately when any one tunnel monitoring appearance is unusual.This interlock protection makes that test can stop rapidly when the electrodynamic vibration generator oil supply system broke down, and has shown phenomenon of the failure intuitively, and the Security and the reliability of system are largely increased.

Description of drawings

Accompanying drawing 1 is the power supply control principle figure of the utility model high pressure static pressure oil sources;

Accompanying drawing 2 is the system's control and the protection interlocking schematic diagram of the utility model high pressure static pressure oil sources.

In the above accompanying drawing: S represents position limit switch; KM1 represents first contactor; KM2 represents second contactor; M represents oil well pump and dump pump; L1, N1 represent the power loop that the first contactor KM1 coil is introduced from the electrodynamic vibration generator power amplifier; L2, N2 represent the ABAP Adapter loop of the second contactor KM2 coil; U, V, W represent the three-phase ABAP Adapter of oil well pump and dump pump; OVER HEAT represents oily temperature heat alarm; PUMP1 represents the pumping pipelines fuel injection pressure signal; PUMP2 represents the oil returning tube fuel injection pressure signal.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment:

A kind of control protective gear of high pressure static pressure oil sources comprises: the first, and the power control circuit of high pressure static pressure oil sources; The second, oil pressure is reported the alert circuit of monitoring unusually in pumping pipelines and the oil returning tube; The 3rd, the warm overheated monitoring alarm circuit of oil in the fuel tank; The 4th, the oil pressure in the pumping pipelines is adjusted and controlled.

As shown in Figure 1, the power control circuit of described high pressure static pressure oil sources comprises position limit switch S, acting surface, the first contactor KM1 and the second contactor KM2.In described position limit switch S and the acting surface, one is located on the stage body, another is located on the support of supporting stage body, acting surface contacts with position limit switch S and makes position limit switch S make contact when stage body is turned to the horizontal operation state, and acting surface separates with position limit switch S position limit switch S contact is disconnected when stage body is turned to vertical working state.The contact of position limit switch S is connected in the power loop of the first contactor KM1 coil, the contact of the first contactor KM1 is connected in the power loop of the second contactor KM2 coil, the contact of the second contactor KM2 is connected in the power control loop of oil well pump and dump pump, constitutes power control circuit to oil well pump and dump pump with this.

In the work, position limit switch closure when stage body is turned to the horizontal operation state, position limit switch disconnected when stage body was in vertical working state, the break-make of contactor KM1 on the position limit switch S power controlling amplifier, control the break-make of oil supply system contactor KM2 by contactor KM1, make stage body power amplifier when level power on and just connected the power supply of oil well pump and dump pump automatically, its objective is that its power supply can't not start when oil supply system did not need work for stage body only could start oil supply system when the energising of level and power amplifier.Forget when also having prevented oil well pump work and open the generation that the dump pump power supply causes the oil spilling situation.Because the power supply capacity that oil supply system needs is generally all very big, its power supply be outside the access in this programme, has prevented from may the power supply of vibration system be disturbed, but also can be designed to the power amplifier access of electrodynamic vibration generator.

As shown in Figure 2, oil pressure abnormal monitoring warning circuit is in described pumping pipelines and the oil returning tube: difference setting pressure switch on pumping pipelines and oil returning tube, the output terminal of two pressure switches is connected with the input end of a fault-detecting circuit respectively, when the oil pressure in pumping pipelines and the oil returning tube exceeds the pressure control range of corresponding pressure switch, corresponding pressure switch action, the fault-detecting circuit output alarm signal constitutes oil pressure abnormal monitoring warning circuit in pumping pipelines and the oil returning tube respectively with this.Because different its pressure switch monitoring ranges of oil pressure of pumping pipelines and oil returning tube also are different, when not having pressure, pump pressure anomaly or oil return provide alarm signal.

As shown in Figure 2, the warm overheated monitoring alarm circuit of oil is in the fuel tank: mounting temperature sensor in fuel tank, temperature transducer is connected with the input end of described fault-detecting circuit, fault-detecting circuit output alarm signal when the oil temperature in the fuel tank surpasses permitted value constitutes the warm overheated monitoring alarm circuit of oil in the fuel tank with this.

As shown in Figure 2, the oil pressure in the pumping pipelines is adjusted and controlled to be: setting pressure table and pressure regulator valve on pumping pipelines are respectively applied for the pressure measurement demonstration and adjust oil circuit pressure.The pressure gauge outward appearance is observable on the fuel tank panel, and manometric effect is to observe when adjusting oil circuit pressure and system works with pressure regulator valve to use.The pressure that pressure regulator valve adjustable extent and high pressure hydrostatic bearing need adapts, the pressure that the highest adjustable pressure of pressure regulator valve needs a little more than the high pressure hydrostatic bearing, original state is zero, and is because oil pumping pressure will progressively adjust from low to high, adjusted and controlled with this oil pressure that constitutes in the pumping pipelines.

Power amplifier is shut down the cut-out running state rapidly when above-mentioned any alarm signal occurs, and shows phenomenon of the failure.Vibration test can't be carried out when power amplifier cut off the running state of electric vibrating system, so that check.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims (4)

1, a kind of control protective gear of high pressure static pressure oil sources, it is characterized in that: comprise position limit switch (S), acting surface, first contactor (KM1) and second contactor (KM2), in described position limit switch (S) and the acting surface, one is located on the stage body, another is located on the support of supporting stage body, acting surface contacts with position limit switch (S) and makes position limit switch (S) make contact when stage body is turned to the horizontal operation state, and acting surface separates with position limit switch (S) position limit switch (S) contact is disconnected when stage body is turned to vertical working state; The contact of position limit switch (S) is connected in the power loop of first contactor (KM1) coil, the contact of first contactor (KM1) is connected in the power loop of second contactor (KM2) coil, the contact of second contactor (KM2) is connected in the power control loop of oil well pump and dump pump, constitutes power control circuit to oil well pump and dump pump with this.

2, control protective gear according to claim 1; it is characterized in that: difference setting pressure switch on pumping pipelines and oil returning tube; the output terminal of two pressure switches is connected with the input end of a fault-detecting circuit respectively; when the oil pressure in pumping pipelines and the oil returning tube exceeds the pressure control range of corresponding pressure switch; corresponding pressure switch action; the fault-detecting circuit output alarm signal constitutes oil pressure abnormal monitoring warning circuit in pumping pipelines and the oil returning tube respectively with this.

3, control protective gear according to claim 2; it is characterized in that: mounting temperature sensor in fuel tank; temperature transducer is connected with the input end of described fault-detecting circuit; fault-detecting circuit output alarm signal when the oil temperature in the fuel tank surpasses permitted value constitutes the warm overheated monitoring alarm circuit of oil in the fuel tank with this.

4, control protective gear according to claim 3 is characterized in that: setting pressure table and pressure regulator valve on pumping pipelines, and be respectively applied for the pressure measurement demonstration and adjust oil circuit pressure, adjusted and controlled with this oil pressure that constitutes in the pumping pipelines.

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