CN201127140Y

CN201127140Y - Cooling device for X ray tube

Info

Publication number: CN201127140Y
Application number: CNU2007200164469U
Authority: CN
Inventors: 田冰; 曲秋华
Original assignee: DANDONG AOLONG RADIATIVE INSTRUMENT Co Ltd
Current assignee: DANDONG AOLONG RADIATIVE INSTRUMENT Co Ltd
Priority date: 2007-12-05
Filing date: 2007-12-05
Publication date: 2008-10-01
Anticipated expiration: 2017-12-05

Abstract

The utility model relates to the field of X-ray inspection, specifically to a cooling device for the X-ray tube of a mobile inspection machine, which cools the circulation oil in an X-ray tube apparatus, and comprises a temperature controller, a refrigerating compressor and a fan, wherein the input port of the temperature controller is connected with a temperature sensor, the main output port of the temperature controller is connected with a coil of a time relay, the normally open contact of the time relay and a second AC contactor coil for controlling the start and stop of the refrigerating compressor are connected in series, thus forming a control circuit of the refrigerating compressor; the control circuit of the refrigerating compressor is provided with an auxiliary normally open contact of a first AC contactor for controlling the water/oil pump motor for circulation water/oil. According to the utility model, the temperature sensor is employed to detect the oil temperature and send it to the temperature controller, and then the on and off states of the refrigerating compressor are controlled automatically, thus ensuring cooling effect; the accuracy and the automation are high, the reliability is high, warning signals can be outputted automatically, and the service life of the X-ray tube is extended.

Description

A kind of cooling device of X-ray tube

Technical field

The utility model relates to the x-ray inspection field, specifically a kind of cooling device of portable defectoscope X-ray tube.

Background technology

The X-ray tube of x-ray flaw detector can only be converted to X ray with about 1% of electron energy, and remaining most energy can be converted to heat energy on plate target, antianode target and anode bodies heating.Therefore, can operate as normal in order to make X-ray tube, x-ray flaw detector must have good cooling device, otherwise plate target will be damaged.

The X-ray tube cooling device of existing x-ray flaw detector, what generally adopt is temperature switch control.When the temperature of X-ray tube reached the predetermined value of temperature switch, temperature switch closed pair X-ray tube cooled off.Temperature switch is controlled, and its accuracy is low, and automaticity is not high, and reliability is also relatively poor.The X-ray tube that also has adopts is that the mode of circulating water cool cycles oil is cooled off, and the working site is also wanted water receiving pipe, stayed the gutter, makes the operational environment complexity, inconvenient operation, and cause the waste of water resources.

The utility model content

In order to solve the problem of above-mentioned existence, the purpose of this utility model is to provide the cooling device of the X-ray tube of a kind of Automatic Cycle control, good cooling results.

Another purpose of the present utility model is to provide a kind of cooling device that prolongs the X-ray tube in X-ray tube useful life.

The purpose of this utility model is achieved through the following technical solutions:

The utility model cools off the recycle oil in the X-ray tube equipment, have temp controlled meter, refrigerant compressor and fan, wherein, the input of temp controlled meter is connected to temperature sensor, the main output of temp controlled meter is connected to the coil of the time relay, the normally opened contact of the time relay is connected with second ac contactor coil of control refrigeration compressor motor start and stop, constitutes the refrigerant compressor control loop; Be provided with the auxiliary normally opened contact of first A.C. contactor of the water/Oil pump electrical machinery of Control Circulation water/oil in the refrigerant compressor control loop.

Wherein: described fan electromotor and refrigeration compressor motor are connected in parallel in the same major loop; When being Oil pump electrical machinery in the refrigerant compressor control loop, also be provided with pipeline electromagnetic valve in the cooling line of refrigerant compressor, control its coil by the auxiliary normally opened contact of second A.C. contactor and power on; The probe of temperature sensor is located in the water/fuel tank of recirculated water/oil; The overtemperature alarm output of temp controlled meter links to each other with an auxiliary relay coil, and a contact of this auxiliary relay links to each other with the overtemperature alarm input of PLC in the X-ray tube equipment with another auxiliary normally opened contact series connection back of first A.C. contactor; The pressure signal input of described PLC and flow signal input also respectively be located at the recycle oil pipeline in pressure switch and flow switch link to each other; Refrigerant compressor control loop, Oil pump electrical machinery control loop and temp controlled meter control loop power on by same startup button; The thermometer power supply is powered on by selector switch; Selector switch powers on for starting button.

Advantage of the present utility model and good effect are:

1. the utility model has adopted temperature sensor to detect and give temp controlled meter to oily temperature, and the switch of nonstick system of control cold compressor has guaranteed cooling effect, accuracy, automaticity height, good reliability.

2. the utility model output alarm signal automatically.

3. the utility model has adopted flow switch and pressure switch that flow in the oil pipe and pressure are detected, can make X-ray tube in long-time continuously, work reliably, prolonged useful life.

4. the utility model has enlarged the scope of application, has also saved water resources simultaneously.

Description of drawings

Fig. 1 is the front view of the utility model embodiment one;

Fig. 2 is that the A of Fig. 1 is to view;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 for B among Fig. 1 to the view that removes loam cake;

Fig. 5 is the front view of the utility model embodiment two,

Fig. 6 is the left view of Fig. 5;

Fig. 7 is the vertical view of Fig. 5;

Fig. 8 is one of circuit theory diagrams of the present utility model;

Fig. 9 is two of circuit theory diagrams of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment 1 (the pump motor M1 of employing)

Shown in Fig. 1～4, the utility model cools off the recirculated water in the X-ray tube equipment, has temp controlled meter TC, refrigerant compressor M2 and fan M3, and wherein, the input of temp controlled meter TC is connected to temperature sensor PT100, and its probe is located in the water tank of recirculated water.The main output of temp controlled meter TC is connected to the coil of time relay KT, and the normally opened contact of time relay KT is connected with the second A.C. contactor KM2 coil of control refrigerant compressor M2 motor start and stop, constitutes the refrigerant compressor control loop.Also be provided with the auxiliary normally opened contact of the first A.C. contactor KM1 of the pump motor M1 of Control Circulation water in the refrigerant compressor control loop.Fan M3 motor and refrigerant compressor M2 motor parallel are connected in the same major loop.The overtemperature alarm output of temp controlled meter TC links to each other with an auxiliary relay KA coil, and the normally-closed contact of this auxiliary relay KA links to each other with the overtemperature alarm input of PLC in the X-ray tube equipment with another auxiliary normally opened contact KM1-4 series connection back of the first A.C. contactor KM1.The pressure signal input of PLC and flow signal input also respectively be located at circulating water line in pressure switch SQB and flow switch SQA link to each other.Refrigerant compressor control loop, pump motor control loop and temp controlled meter control loop power on by same startup button SB2.Thermometer TC power supply is powered on by selector switch SB1.Selector switch SB1 powers on for starting button SB2.

Embodiment 2

Shown in Fig. 5～7, that present embodiment adopts is Oil pump electrical machinery M1, also is provided with pipeline electromagnetic valve YV1 in the cooling line of refrigerant compressor M2, controls its coil by the auxiliary normally opened contact of second A.C. contactor and powers on.Other structures are identical with embodiment 1.

Shown in Fig. 8～9, circuit theory of the present utility model is:

Two normally opened contacts of the first A.C. contactor KM1 of the present utility model are located in the major loop of pump motor M1, are provided with water/oily circulation lamp HL1 between two power lines of water/Oil pump electrical machinery M1.Two normally opened contacts of the second A.C. contactor KM2 are connected in the major loop of refrigerant compressor M2 and fan M3 thereof.

Reach by the coil of the first A.C. contactor KM1 of same startup button SB2 control, coil and the temp controlled meter of the second A.C. contactor KM2 through selector switch SB1 difference temp controlled meter power supply in parallel in control loop, wherein the output of temp controlled meter is connected to the coil of auxiliary relay KA.Be provided with the normally opened contact of time relay KT and another normally opened contact of the first A.C. contactor KM1 between the coil that starts the button SB2 and the second A.C. contactor KM2, the coil of time relay KT is connected to the warning output of temp controlled meter.The input of temp controlled meter is connected to the temperature sensor of measuring water temperature/oil temperature.During work, normally opened contact closure by the second A.C. contactor KM2, connect the major loop of refrigerant compressor M2, when promptly the temperature that detects water temperature/oil temperature when temp controlled meter is higher than design temperature, main output closure, after time relay KT time-delay, refrigerant compressor M2 work is connected in the normally opened contact conducting of time relay KT; And the temperature that detects water temperature/oil temperature when temp controlled meter is when being lower than design temperature, and main output disconnects, and time relay KT coil losing electricity, the second A.C. contactor KM2 coil be therefore dead electricity also, disconnects refrigerant compressor M2 major loop, and refrigerant compressor M2 does not work.The coil of the warning output termination auxiliary relay KA of temp controlled meter, when temp controlled meter detected the warm temperature of water temperature/oil above design temperature, the warning output closing of contact was sent alarm signal.Flow switch and pressure switch in backwater/oil pipe line, have been connected in series, its holding wire separately is connected to the input of PLC, promptly when water in backwater/oil pipe line/oily flow did not reach the flow of flow switch setting, the normally opened contact of flow switch was not closed, and flow switch sends warning; When water/oil pressure in the pipeline was higher than the pressure switch set point, illustrating had obstruction in the pipeline, and pressure switch is also sent warning.Make in the ray tube temperature under normal condition of work, unlikelyly burn owing to temperature rise is too high.

Claims

1. the cooling device of an X-ray tube, recycle oil in the X-ray tube equipment is cooled off, it is characterized in that: have temp controlled meter (TC), refrigerant compressor (M2) and fan (M3), wherein, the input of temp controlled meter (TC) is connected to temperature sensor (PT100), the main output of temp controlled meter (TC) is connected to the coil of the time relay (KT), the normally opened contact of the time relay (KT) is connected with second A.C. contactor (KM2) coil of control refrigerant compressor (M2) motor start and stop, constitutes the refrigerant compressor control loop; Be provided with the auxiliary normally opened contact of first A.C. contactor (KM1) of the water/Oil pump electrical machinery (M1) of Control Circulation water/oil in the refrigerant compressor control loop.

2. by the cooling device of the described X-ray tube of claim 1, it is characterized in that: described fan (M3) motor and refrigerant compressor (M2) motor parallel are connected in the same major loop.

3. press the cooling device of the described X-ray tube of claim 1, it is characterized in that: when being Oil pump electrical machinery in the refrigerant compressor control loop, also be provided with pipeline electromagnetic valve (YV1) in the cooling line of refrigerant compressor (M2), control its coil by the auxiliary normally opened contact of second A.C. contactor and power on.

4. by the cooling device of the described X-ray tube of claim 1, it is characterized in that: the probe of described temperature sensor (PT100) is located in the water/fuel tank of recirculated water/oil.

5. press the cooling device of the described X-ray tube of claim 1, it is characterized in that: the overtemperature alarm output of described temp controlled meter (TC) links to each other with an auxiliary relay (KA) coil, and a contact of this auxiliary relay (KA) links to each other with the overtemperature alarm input of PLC in the X-ray tube equipment with another auxiliary normally opened contact (KM1-4) series connection back of first A.C. contactor (KM1).

6. by the cooling device of the described X-ray tube of claim 5, it is characterized in that: the pressure signal input of described PLC and flow signal input also respectively be located at the recycle oil pipeline in pressure switch (SQB) and flow switch (SQA) link to each other.

7. by the cooling device of the described X-ray tube of claim 1, it is characterized in that: refrigerant compressor control loop, Oil pump electrical machinery control loop and temp controlled meter control loop power on by same startup button (SB2).

8. by the cooling device of the described X-ray tube of claim 1, it is characterized in that: described thermometer (TC) power supply is powered on by selector switch (SB1).

9. by the cooling device of the described X-ray tube of claim 8, it is characterized in that: described selector switch (SB1) powers on for starting button (SB2).