CN203465064U - Circuit control system of sealing performance detection equipment - Google Patents
Circuit control system of sealing performance detection equipment Download PDFInfo
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- CN203465064U CN203465064U CN201320562941.5U CN201320562941U CN203465064U CN 203465064 U CN203465064 U CN 203465064U CN 201320562941 U CN201320562941 U CN 201320562941U CN 203465064 U CN203465064 U CN 203465064U
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Abstract
The utility model discloses a circuit control system of sealing performance detection equipment, and can be applied to sealing performance detection equipment for detecting sealing performance of an object by utilizing a negative pressure. The sealing performance detection equipment comprises an air cylinder, a vacuum pump and a sealed water tank. The object to be detected is placed in the sealed water tank, and the air cylinder drives the vacuum pump to work so that the pressure intensity in the sealed water tank is reduced. The circuit control system comprises an air cylinder center control circuit, an air cylinder movement control circuit and a water tank control circuit; and the air cylinder center control circuit, the air cylinder movement control circuit and the water tank control circuit are successively and electrically connected. Through the mode, the circuit control system can automatically control the sealing performance detection equipment, and the circuit control system has the advantages of one button operation, easy operation, short test time, high efficiency, high accuracy and improved production efficiency.
Description
Technical field
The utility model relates to a kind of circuit control system of leak-testing apparatus.
Background technology
In commercial production, a lot of electronic devices and components usually need to detect its sealing property as fuse member etc., the sealing of mainly taking at present heating detected electrons components and parts, concrete operations are: electronic devices and components are placed in water tank, and electronic devices and components are immersed in the water in water tank, feedwater is heated to uniform temperature, and need at least keep 5 minutes, the test duration is longer, and efficiency is low, if electronic devices and components poor sealing, electronic devices and components inside will be overflowed after when gases are heated, they expand.When concrete operations; access panel is often understood fogging and the globule; whether be unfavorable for observing has bubble to overflow; if the cold air of surface band is heated and also can produces some minute bubbles when putting into water tank due to electronic devices and components winter; easily disturb judgement; in addition, after electronic devices and components are heated, easily damage, affect the performance and used life of electronic devices and components.
Therefore, adopting negative pressure to detect sealing property arises at the historic moment, negative pressure is that electronic devices and components are put into water, reduce the pressure of electronic devices and components outside, utilize the inside and outside pressure reduction of electronic devices and components to detect sealing property, if electronic devices and components sealing property is bad, electronic devices and components surface there will be bubble.
Described negative pressure is corresponding comprises cylinder, vacuum pump and sealing radiator, electronic devices and components are placed in described sealing radiator, described in described air cylinder driven, vacuum pump work is to reduce the pressure in described sealing radiator, yet, described leak-testing apparatus is generally armstrong's patent operation, also unrealized robotization is controlled, and therefore for described leak-testing apparatus, to develop a circuit control system extremely urgent.
Utility model content
The technical matters that the utility model mainly solves is to provide a kind of circuit control system of leak-testing apparatus, can robotization control leak-testing apparatus, a key operation, and simple to operate, the test duration is short, and efficiency is high, and accuracy rate is high, has improved production efficiency.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the circuit control system that a kind of leak-testing apparatus is provided, be applied to utilize in the leak-testing apparatus of detection of negative pressure object sealing, described leak-testing apparatus comprises cylinder, vacuum pump and sealing radiator, examined object is placed in described sealing radiator, described in described air cylinder driven, vacuum pump work is to reduce the pressure in described sealing radiator, described circuit control system comprises cylinder axis control circuit, cylinder moving control circuit and water tank control circuit, described cylinder axis control circuit, cylinder moving control circuit and water tank control circuit are electrically connected successively, described cylinder moving control circuit comprises venting timing relay, and described venting timing relay comprises venting time delay coil and venting time delay dynamic circuit breaker switch, described cylinder axis control circuit comprises the first power supply, emergent stopping dynamic circuit breaker switch, the up dynamic circuit breaker switch of cylinder, the descending dynamic circuit connector switch of cylinder, the first negative pressure control braking combination switch, main electromagnetic valve of gas circuit, cylinder solenoid valve and cylinder pilot relay, described cylinder pilot relay comprises that cylinder control coil, the first cylinder are controlled dynamic circuit connector switch and the second cylinder is controlled dynamic circuit connector switch, and described the first power supply comprises the first terminals and the second terminals, the first end of described emergency stop switch and the first terminals are electrically connected, the second end of emergency stop switch respectively with the first end of the up dynamic circuit breaker switch of described cylinder, the first negative pressure control braking first end of combination switch and the first end of main electromagnetic valve of gas circuit are electrically connected, the descending dynamic circuit connector switch of described cylinder and described the first cylinder are controlled dynamic circuit connector switch in parallel and are connected between the second end of the up dynamic circuit breaker switch of described cylinder and the first end of venting time delay dynamic circuit breaker switch later, the second end of described venting time delay dynamic circuit breaker switch is braked respectively the second end of combination switch with described the first negative pressure control, the first end of cylinder control coil is electrically connected, the second end of described cylinder control coil and the second end of main electromagnetic valve of gas circuit are all electrically connected with described the second terminals, described cylinder solenoid valve is controlled after dynamic circuit connector switch is connected and is connected in parallel with described main electromagnetic valve of gas circuit with described the second cylinder.
In preferred embodiment of the utility model, described water tank control circuit comprises detection timing relay, and described detection timing relay comprises that detecting time delay coil, first detects time delay dynamic circuit breaker switch and the second detection time delay dynamic circuit connector switch.
In preferred embodiment of the utility model, described cylinder moving control circuit further comprises the first auxiliary reclay and the second auxiliary reclay, described the first auxiliary reclay comprises the first intermediate coil, the first middle dynamic circuit breaker switch and the second middle dynamic circuit connector switch, and described the second auxiliary reclay comprises the second intermediate coil, the 3rd middle dynamic circuit connector switch and the 4th middle dynamic circuit breaker switch.
In preferred embodiment of the utility model, described cylinder moving control circuit further comprises cylinder stroke magnetic control dynamic circuit connector switch, test stops dynamic circuit breaker switch and pressure-releasing electromagnetic valve, the first end of described cylinder stroke magnetic control dynamic circuit connector switch is electrically connected with the second end of described emergent stopping dynamic circuit breaker switch and the first end of the second middle dynamic circuit connector switch respectively, the first end that the second end of described cylinder stroke magnetic control dynamic circuit connector switch and described test stop dynamic circuit breaker switch is electrically connected, described first detects time delay dynamic circuit breaker switch, in the middle of the first intermediate coil and the 4th, after the series connection of dynamic circuit breaker switch, be connected between the second end and the second terminals that described test stops dynamic circuit breaker switch.
In preferred embodiment of the utility model, described the second intermediate coil and described venting time delay coil are connected in parallel, second intermediate coil one end and the second terminals are electrically connected, the first end that the other end and described second detects time delay dynamic circuit connector switch is electrically connected, the first end that the second the second end and described first that detects time delay dynamic circuit connector switch detects time delay dynamic circuit breaker switch is electrically connected, and described second detects time delay dynamic circuit connector switch is further connected with dynamic circuit connector switch in parallel in the middle of the 3rd.
In preferred embodiment of the utility model, the described first middle dynamic circuit breaker switch is connected between described the first terminals and the second terminals after connecting with described pressure-releasing electromagnetic valve.
In preferred embodiment of the utility model, described water tank control circuit further comprises the overtime alarm of bleeding, the overtime protection relay of bleeding, vacuum pump pilot relay, the second negative pressure control braking combination switch, the 3rd negative pressure control braking disconnects closes, the first debugging dynamic circuit breaker switch, the second debugging dynamic circuit connector switch, the 3rd debugging dynamic circuit connector switch stops dynamic circuit breaker switch with bleeding, the described overtime protection relay of bleeding comprises the overtime protection coil of bleeding, first overtime protection dynamic circuit breaker switch and the second overtime protection dynamic circuit connector switch of bleeding of bleeding, described vacuum pump pilot relay comprises vacuum pump control coil, dynamic circuit connector switch controlled by the first vacuum pump and the second vacuum pump is controlled dynamic circuit connector switch.
In preferred embodiment of the utility model, described vacuum pump control coil and described first is bled after overtime protection dynamic circuit breaker switch is connected and is connected with the described overtime protection coils from parallel connection of coils of bleeding, the described overtime protection coil of bleeding is connected to described the 3rd negative pressure control braking and disconnects between the first end and the second terminals closing, the described overtime alarm and described second of bleeding is bled and after overtime protection dynamic circuit connector switch is connected, is connected between second end and described the second terminals of described the 3rd negative pressure control braking disconnection pass, described detection time delay coil is connected to described the 3rd negative pressure control braking after connecting with described the second negative pressure control braking combination switch and disconnects between the second end and described the second terminals closing, described the first debugging dynamic circuit breaker switch is connected to described the 3rd negative pressure control braking and disconnects between the second end and the second end of the second middle dynamic circuit connector switch closing, described the 3rd debugging dynamic circuit connector switch and described the first vacuum pump control dynamic circuit connector switch in parallel later again and described the second debugging dynamic circuit connector switch and bleeding stop dynamic circuit breaker switch and be connected in series in described the 3rd negative pressure control braking and disconnect between the second end and the second end of the described second middle dynamic circuit connector switch closing.
In preferred embodiment of the utility model, described circuit control system further comprises second source and vacuum pump, described second source comprises the 3rd terminals and the 4th terminals, and described vacuum pump is controlled after dynamic circuit connector switch is connected and is connected between described the 3rd terminals and the 4th terminals with described the second vacuum pump.
In preferred embodiment of the utility model; described the first power supply and second source are alternating current; described the first negative pressure control is braked combination switch, the second negative pressure control braking combination switch and the 3rd negative pressure control braking disconnection pass and is all arranged in described sealing radiator, and described venting time delay coil, detection time delay coil and the overtime protection coil of bleeding are on-delay coil.
The beneficial effects of the utility model are: can robotization control leak-testing apparatus, and a key operation, simple to operate, the test duration is short, and efficiency is high, and accuracy rate is high, has improved production efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also according to these accompanying drawings, obtain other accompanying drawing, wherein:
Fig. 1 is electrical block diagram of the present utility model.
In accompanying drawing, the mark of each parts is as follows: 1, cylinder axis control circuit; 2, cylinder moving control circuit; 3, water tank control circuit; K1, emergent stopping dynamic circuit breaker switch; K2, the up dynamic circuit breaker switch of cylinder; K3, the descending dynamic circuit connector switch of cylinder; K4, test stop dynamic circuit breaker switch; K5, the first debugging dynamic circuit breaker switch; K6, the second debugging dynamic circuit connector switch; K7, the 3rd debugging dynamic circuit connector switch; K8, bleeding stops dynamic circuit breaker switch; V1, the first power supply; V2, second source; KL1, main electromagnetic valve of gas circuit; KL2, cylinder solenoid valve; KL3, pressure-releasing electromagnetic valve; JK2, cylinder control coil; JK2-1, the first cylinder are controlled dynamic circuit connector switch; JK2-2, the second cylinder are controlled dynamic circuit connector switch; JK3, vacuum pump control coil; JK3-1, the first vacuum pump are controlled dynamic circuit connector switch; JK3-2, the second vacuum pump are controlled dynamic circuit connector switch; JK4, the first intermediate coil; Dynamic circuit breaker switch in the middle of JK4-1, first; Dynamic circuit connector switch in the middle of JK4-2, second; JK5, the second intermediate coil; Dynamic circuit connector switch in the middle of JK5-1, the 3rd; Dynamic circuit breaker switch in the middle of JK5-2, the 4th; JTK1, the overtime protection coil of bleeding; JTK1-1, the first overtime protection dynamic circuit breaker switch of bleeding; JTK1-2, the second overtime protection dynamic circuit connector switch of bleeding; JTK2, detection time delay coil; JTK2-1, first detects time delay dynamic circuit breaker switch; JTK2-2, second detects time delay dynamic circuit connector switch; JTK3, venting time delay coil; JTK3-1, venting time delay dynamic circuit breaker switch; FK1-1, the first negative pressure control braking combination switch; FK1-2, the second negative pressure control braking combination switch; FK1-3, the 3rd negative pressure control braking disconnect and closing; M, vacuum pump; CK1, cylinder stroke magnetic control dynamic circuit connector switch; X, the overtime alarm of bleeding.
Embodiment
Below the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model embodiment comprises:
A kind of circuit control system of leak-testing apparatus, be applied to utilize in the leak-testing apparatus of detection of negative pressure object sealing, described leak-testing apparatus comprises cylinder, vacuum pump M and sealing radiator, examined object is placed in described sealing radiator, described in described air cylinder driven, vacuum pump M works to reduce the pressure in described sealing radiator, described circuit control system comprises cylinder axis control circuit 1, cylinder moving control circuit 2 and water tank control circuit 3, described cylinder axis control circuit 1, cylinder moving control circuit 2 and water tank control circuit 3 are electrically connected successively.
Wherein, described cylinder moving control circuit 2 comprises venting timing relay, and described venting timing relay comprises venting time delay coil JTK3 and venting time delay dynamic circuit breaker switch JTK3-1; Described cylinder axis control circuit 1 comprises the first power supply V1, emergent stopping dynamic circuit breaker K switch 1, the up dynamic circuit breaker K switch 2 of cylinder, the descending dynamic circuit connector K switch 3 of cylinder, the first negative pressure control braking combination switch FK1-1, main electromagnetic valve of gas circuit KL1, cylinder solenoid valve KL2 and cylinder pilot relay, described cylinder pilot relay comprises that cylinder control coil JK2, the first cylinder are controlled dynamic circuit connector switch JK2-1 and the second cylinder is controlled dynamic circuit connector switch JK2-2, and described the first power supply V1 comprises the first terminals and the second terminals.
The first end of described emergency stop switch and the first terminals are electrically connected, the second end of emergency stop switch respectively with the first end of the up dynamic circuit breaker K switch 2 of described cylinder, the first end of the first negative pressure control braking combination switch FK1-1 and the first end of main electromagnetic valve of gas circuit KL1 are electrically connected, the descending dynamic circuit connector K switch 3 of described cylinder is in parallel with described the first cylinder control dynamic circuit connector switch JK2-1 to be connected between the second end of the up dynamic circuit breaker K switch 2 of described cylinder and the first end of venting time delay dynamic circuit breaker switch JTK3-1 later, the second end of described venting time delay dynamic circuit breaker switch JTK3-1 is braked respectively the second end of combination switch FK1-1 with described the first negative pressure control, the first end of cylinder control coil JK2 is electrically connected, the second end of described cylinder control coil JK2 and the second end of main electromagnetic valve of gas circuit KL1 are all electrically connected with described the second terminals, described cylinder solenoid valve KL2 controls after dynamic circuit connector switch JK2-2 connects and is connected in parallel with described main electromagnetic valve of gas circuit KL1 with described the second cylinder.
In the utility model, described water tank control circuit 3 comprises detection timing relay, and described detection timing relay comprises that detecting time delay coil JTK2, first detects time delay dynamic circuit breaker switch JTK2-1 and the second detection time delay dynamic circuit connector switch JTK2-2.Described cylinder moving control circuit 2 further comprises the first auxiliary reclay and the second auxiliary reclay, described the first auxiliary reclay comprises the first intermediate coil JK4, the first middle dynamic circuit breaker switch JK4-1 and the second middle dynamic circuit connector switch JK4-2, and described the second auxiliary reclay comprises the second intermediate coil JK5, the 3rd middle dynamic circuit connector switch JK5-1 and the 4th middle dynamic circuit breaker switch JK5-2.
Described cylinder moving control circuit 2 further comprises cylinder stroke magnetic control dynamic circuit connector switch CK1, test stops dynamic circuit breaker K switch 4 and pressure-releasing electromagnetic valve KL3, the first end of described cylinder stroke magnetic control dynamic circuit connector switch CK1 is electrically connected with the second end of described emergent stopping dynamic circuit breaker K switch 1 and the first end of the second middle dynamic circuit connector switch JK4-2 respectively, the first end that the second end of described cylinder stroke magnetic control dynamic circuit connector switch CK1 and described test stop dynamic circuit breaker K switch 4 is electrically connected, described first detects time delay dynamic circuit breaker switch JTK2-1, in the middle of the first intermediate coil JK4 and the 4th, after dynamic circuit breaker switch JK5-2 series connection, be connected between the second end and the second terminals that described test stops dynamic circuit breaker K switch 4.
Described the second intermediate coil JK5 and described venting time delay coil JTK3 are connected in parallel, second intermediate coil JK5 one end and the second terminals are electrically connected, the first end that the other end and described second detects time delay dynamic circuit connector switch JTK2-2 is electrically connected, the first end that the second the second end and described first that detects time delay dynamic circuit connector switch JTK2-2 detects time delay dynamic circuit breaker switch JTK2-1 is electrically connected, and described second detects time delay dynamic circuit connector switch JTK2-2 is further connected in parallel with the 3rd middle dynamic circuit connector switch JK5-1.In the middle of described first, dynamic circuit breaker switch JK4-1 is connected between described the first terminals and the second terminals after connecting with described pressure-releasing electromagnetic valve KL3.
In the utility model, described water tank control circuit 3 further comprises the overtime alarm X that bleeds, the overtime protection relay of bleeding, vacuum pump pilot relay, the second negative pressure control braking combination switch FK1-2, the 3rd negative pressure control braking disconnects closes FK1-3, the first debugging dynamic circuit breaker K switch 5, the second debugging dynamic circuit connector K switch 6, the 3rd debugging dynamic circuit connector K switch 7 stops dynamic circuit breaker K switch 8 with bleeding, the described overtime protection relay of bleeding comprises the overtime protection coil JTK1 that bleeds, first overtime protection dynamic circuit breaker switch JTK1-1 and the second overtime protection dynamic circuit connector switch JTK1-2 that bleeds that bleeds, described vacuum pump pilot relay comprises vacuum pump control coil JK3, dynamic circuit connector switch JK3-1 controlled by the first vacuum pump and the second vacuum pump is controlled dynamic circuit connector switch JK3-2.
Described vacuum pump control coil JK3 and described first bleeds after overtime protection dynamic circuit breaker switch JTK1-1 connects and is connected in parallel with the described overtime protection coil JTK1 that bleeds, the described overtime protection coil JTK1 that bleeds is connected to described the 3rd negative pressure control braking and disconnects between the first end and the second terminals that closes FK1-3, the described overtime alarm X and described second that bleeds bleeds and after overtime protection dynamic circuit connector switch JTK1-2 connects, is connected between the second end and described the second terminals of described the 3rd negative pressure control braking disconnection pass FK1-3, described detection time delay coil JTK2 is connected to described the 3rd negative pressure control braking after connecting with described the second negative pressure control braking combination switch FK1-2 and disconnects between the second end and described the second terminals that closes FK1-3, described the first debugging dynamic circuit breaker K switch 5 is connected to described the 3rd negative pressure control braking and disconnects between the second end of pass FK1-3 and the second end of the second middle dynamic circuit connector switch JK4-2, described the 3rd debugging dynamic circuit connector K switch 7 and described the first vacuum pump control dynamic circuit connector switch JK3-1 in parallel later again and described the second debugging dynamic circuit connector K switch 6 and bleeding stop dynamic circuit breaker K switch 8 and be connected in series in described the 3rd negative pressure control braking and disconnect and closing between the second end of FK1-3 and the second end of the described second middle dynamic circuit connector switch JK4-2.
Described circuit control system further comprises second source V2, described second source V2 comprises the 3rd terminals and the 4th terminals, and described vacuum pump M controls after dynamic circuit connector switch JK3-2 connects and is connected between described the 3rd terminals and the 4th terminals with described the second vacuum pump.
Preferably; described the first power supply V1 and second source V2 are alternating current; described the first negative pressure control is braked combination switch FK1-1, the second negative pressure control braking combination switch FK1-2 and the 3rd negative pressure control braking disconnection pass FK1-3 is all arranged in described sealing radiator, and described venting time delay coil JTK3, detection time delay coil JTK2 and the overtime protection coil JTK1 that bleeds are on-delay coil.
Principle of work of the present utility model is:
(1), discharge emergent stopping dynamic circuit breaker K switch 1, the first power supply V1 and connect, main electromagnetic valve of gas circuit KL1 adhesive, main gas circuit is connected, pressure-releasing electromagnetic valve KL3 adhesive simultaneously, venting loop is connected;
(2), press the descending dynamic circuit connector K switch 3 of lower cylinder, cylinder control coil JK2 energising, it is closed that the first cylinder is controlled dynamic circuit connector switch JK2-1, form self-locking, make cylinder control coil JK2 keep "on" position, it is closed that the second cylinder is controlled dynamic circuit connector switch JK2-2, cylinder solenoid valve KL2 adhesive, make cylinder descending, when cylinder comes downwards to desired location, stop, now cylinder stroke magnetic control dynamic circuit connector switch CK1 is closed; The first intermediate coil JK4 energising, the second middle dynamic circuit connector switch JK4-2 is closed, makes vacuum pump control coil JK3 energising, and the second corresponding vacuum pump is controlled dynamic circuit connector switch JK3-2 closure, vacuum pump M operation; The first middle dynamic circuit breaker switch JK4-1 disconnects simultaneously, and pressure-releasing electromagnetic valve KL3 is discharged, and venting loop disconnects;
(3), in vacuum pump M operational process, when in water tank, negative pressure value reaches first negative pressure setting value (in the present embodiment this value for-100pa), the first negative pressure control braking combination switch FK1-1 adhesive, by cylinder solenoid valve KL2 self-locking; When in water tank, negative pressure value reaches second negative pressure setting value (this value is-600pa in the present embodiment), the 3rd negative pressure control braking disconnects closes FK1-3 disconnection, vacuum pump control coil JK3 power-off, vacuum pump M is out of service, the second negative pressure control braking combination switch FK1-2 adhesive simultaneously, make to detect time delay coil JTK2 energising, time delay, to setting value (in the present embodiment, this value is 10S), detects time delay coil JTK2 work;
(4), detect after time delay coil JTK2 work, first detects time delay dynamic circuit breaker switch JTK2-1 disconnects, and makes the first intermediate coil JK4 power-off, and the second corresponding middle dynamic circuit connector switch JK4-2 resets, vacuum pump M power-off is not worked, the first middle dynamic circuit breaker switch JK4-1 resets simultaneously, and pressure-releasing electromagnetic valve KL3 adhesive, connects venting loop, discharge negative pressure in water tank, when in water tank, negative pressure is released into first negative pressure setting value, the first negative pressure control braking combination switch FK1-1 disconnects, and discharges cylinder locked loop;
Second detects time delay dynamic circuit connector switch JTK2-2 closure, make to exit time delay coil JTK3 and the second intermediate coil JK5 energising, and the 3rd middle dynamic circuit connector switch JK5-1 is closed, forms self-locking circuit, and time delay coil JTK3 and the second intermediate coil JK5 maintenance "on" position make to exit; The 4th middle dynamic circuit breaker switch JK5-2 disconnects simultaneously, disconnect the first intermediate coil JK4 loop, when venting time delay is after setting-up time (in the present embodiment, this value is 10S), venting time delay coil JTK3 energising, corresponding venting time delay dynamic circuit breaker switch JTK3-1 disconnects, cylinder control coil JK2 is disconnected, and the first cylinder is controlled dynamic circuit connector switch JK2-1 and is resetted, and finishes self-locking, the second cylinder is controlled dynamic circuit connector switch JK2-2 and is resetted, cylinder solenoid valve KL2 discharges, and makes cylinder up, and test finishes; During the up beginning of cylinder, cylinder stroke magnetic control dynamic circuit connector switch CK1 disconnects, and time delay coil JTK3 and the second intermediate coil JK5 power-off restoration make to exit;
(5), in test process, as needs stop test temporarily, can press test and stop dynamic circuit breaker K switch 4, make the first intermediate coil JK4 power-off, the second corresponding middle dynamic circuit connector switch JK4-2 resets, and makes the power-off of vacuum pump M control loop, the first middle dynamic circuit breaker switch JK4-1 resets simultaneously, pressure-releasing electromagnetic valve KL3 adhesive, connects venting loop, discharges negative pressure in water tank.
The overtime protection relay of bleeding described in the utility model can be protected vacuum pump M, when in water tank, negative pressure value cannot arrive setting value in setting-up time, or arrival setting value final vacuum controller does not move, the overtime protection relay of bleeding can make vacuum pump M quit work, and connects the overtime alarm X that bleeds simultaneously and reports to the police; Described the first negative pressure control braking combination switch FK1-1 can protect water tank, while having negative pressure in water tank, forbid that cylinder is up, negative pressure value in water tank is when surpassed first negative pressure setting value (100pa), the first negative pressure control braking combination switch FK1-1 is closed, and cylinder control coil JK2 self-locking, even if mistake is pressed the up dynamic circuit breaker K switch 2 of lower cylinder, cylinder also can not move, and keeps downstream state; Described main electromagnetic valve of gas circuit KL1 can protect water tank, in test process, as presses emergent stopping dynamic circuit breaker K switch 1, and main electromagnetic valve of gas circuit KL1 discharges, and main gas circuit is disconnected, and cylinder remains on downstream state.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. the circuit control system of a leak-testing apparatus, be applied to utilize in the leak-testing apparatus of detection of negative pressure object sealing, described leak-testing apparatus comprises cylinder, vacuum pump and sealing radiator, examined object is placed in described sealing radiator, described in described air cylinder driven, vacuum pump work is to reduce the pressure in described sealing radiator, it is characterized in that, described circuit control system comprises cylinder axis control circuit (1), cylinder moving control circuit (2) and water tank control circuit (3), described cylinder axis control circuit, cylinder moving control circuit and water tank control circuit are electrically connected successively, described cylinder moving control circuit comprises venting timing relay, and described venting timing relay comprises venting time delay coil (JTK3) and venting time delay dynamic circuit breaker switch (JTK3-1), described cylinder axis control circuit comprises the first power supply (V1), emergent stopping dynamic circuit breaker switch (K1), the up dynamic circuit breaker switch of cylinder (K2), the descending dynamic circuit connector switch of cylinder (K3), the first negative pressure control braking combination switch (FK1-1), main electromagnetic valve of gas circuit (KL1), cylinder solenoid valve (KL2) and cylinder pilot relay, described cylinder pilot relay comprises that cylinder control coil (JK2), the first cylinder are controlled dynamic circuit connector switch (JK2-1) and the second cylinder is controlled dynamic circuit connector switch (JK2-2), and described the first power supply comprises the first terminals and the second terminals, the first end of described emergency stop switch and the first terminals are electrically connected, the second end of emergency stop switch respectively with the first end of the up dynamic circuit breaker switch of described cylinder, the first negative pressure control braking first end of combination switch and the first end of main electromagnetic valve of gas circuit are electrically connected, the descending dynamic circuit connector switch of described cylinder and described the first cylinder are controlled dynamic circuit connector switch in parallel and are connected between the second end of the up dynamic circuit breaker switch of described cylinder and the first end of venting time delay dynamic circuit breaker switch later, the second end of described venting time delay dynamic circuit breaker switch is braked respectively the second end of combination switch with described the first negative pressure control, the first end of cylinder control coil is electrically connected, the second end of described cylinder control coil and the second end of main electromagnetic valve of gas circuit are all electrically connected with described the second terminals, described cylinder solenoid valve is controlled after dynamic circuit connector switch is connected and is connected in parallel with described main electromagnetic valve of gas circuit with described the second cylinder.
2. the circuit control system of leak-testing apparatus according to claim 1, it is characterized in that, described water tank control circuit comprises detection timing relay, and described detection timing relay comprises that detecting time delay coil (JTK2), first detects time delay dynamic circuit breaker switch (JTK2-1) and the second detection time delay dynamic circuit connector switch (JTK2-2).
3. the circuit control system of leak-testing apparatus according to claim 2, it is characterized in that, described cylinder moving control circuit further comprises the first auxiliary reclay and the second auxiliary reclay, described the first auxiliary reclay comprises the first intermediate coil (JK4), the first middle dynamic circuit breaker switch (JK4-1) and the second middle dynamic circuit connector switch (JK4-2), and described the second auxiliary reclay comprises the second intermediate coil (JK5), the 3rd middle dynamic circuit connector switch (JK5-1) and the 4th middle dynamic circuit breaker switch (JK5-2).
4. the circuit control system of leak-testing apparatus according to claim 3, it is characterized in that, described cylinder moving control circuit further comprises cylinder stroke magnetic control dynamic circuit connector switch (CK1), test stops dynamic circuit breaker switch (K4) and pressure-releasing electromagnetic valve (KL3), the first end of described cylinder stroke magnetic control dynamic circuit connector switch is electrically connected with the second end of described emergent stopping dynamic circuit breaker switch and the first end of the second middle dynamic circuit connector switch respectively, the first end that the second end of described cylinder stroke magnetic control dynamic circuit connector switch and described test stop dynamic circuit breaker switch is electrically connected, described first detects time delay dynamic circuit breaker switch, in the middle of the first intermediate coil and the 4th, after the series connection of dynamic circuit breaker switch, be connected between the second end and the second terminals that described test stops dynamic circuit breaker switch.
5. the circuit control system of leak-testing apparatus according to claim 4, it is characterized in that, described the second intermediate coil and described venting time delay coil are connected in parallel, second intermediate coil one end and the second terminals are electrically connected, the first end that the other end and described second detects time delay dynamic circuit connector switch is electrically connected, the first end that the second the second end and described first that detects time delay dynamic circuit connector switch detects time delay dynamic circuit breaker switch is electrically connected, and described second detects time delay dynamic circuit connector switch is further connected with dynamic circuit connector switch in parallel in the middle of the 3rd.
6. the circuit control system of leak-testing apparatus according to claim 5, is characterized in that, the described first middle dynamic circuit breaker switch is connected between described the first terminals and the second terminals after connecting with described pressure-releasing electromagnetic valve.
7. the circuit control system of leak-testing apparatus according to claim 6, it is characterized in that, described water tank control circuit further comprises the overtime alarm (X) of bleeding, the overtime protection relay of bleeding, vacuum pump pilot relay, the second negative pressure control braking combination switch (FK1-2), the 3rd negative pressure control braking disconnects closes (FK1-3), the first debugging dynamic circuit breaker switch (K5), the second debugging dynamic circuit connector switch (K6), the 3rd debugging dynamic circuit connector switch (K7) and bleed and stop dynamic circuit breaker switch (K8), the described overtime protection relay of bleeding comprises the overtime protection coil (JTK1) of bleeding, first overtime protection dynamic circuit breaker switch (JTK1-1) and the second overtime protection dynamic circuit connector switch (JTK1-2) of bleeding of bleeding, described vacuum pump pilot relay comprises vacuum pump control coil (JK3), dynamic circuit connector switch (JK3-1) controlled by the first vacuum pump and the second vacuum pump is controlled dynamic circuit connector switch (JK3-2).
8. the circuit control system of leak-testing apparatus according to claim 7, it is characterized in that, described vacuum pump control coil and described first is bled after overtime protection dynamic circuit breaker switch is connected and is connected with the described overtime protection coils from parallel connection of coils of bleeding, the described overtime protection coil of bleeding is connected to described the 3rd negative pressure control braking and disconnects between the first end and the second terminals closing, the described overtime alarm and described second of bleeding is bled and after overtime protection dynamic circuit connector switch is connected, is connected between second end and described the second terminals of described the 3rd negative pressure control braking disconnection pass, described detection time delay coil is connected to described the 3rd negative pressure control braking after connecting with described the second negative pressure control braking combination switch and disconnects between the second end and described the second terminals closing, described the first debugging dynamic circuit breaker switch is connected to described the 3rd negative pressure control braking and disconnects between the second end and the second end of the second middle dynamic circuit connector switch closing, described the 3rd debugging dynamic circuit connector switch and described the first vacuum pump control dynamic circuit connector switch in parallel later again and described the second debugging dynamic circuit connector switch and bleeding stop dynamic circuit breaker switch and be connected in series in described the 3rd negative pressure control braking and disconnect between the second end and the second end of the described second middle dynamic circuit connector switch closing.
9. the circuit control system of leak-testing apparatus according to claim 8, it is characterized in that, described circuit control system further comprises second source (V2) and vacuum pump (M), described second source comprises the 3rd terminals and the 4th terminals, and described vacuum pump is controlled after dynamic circuit connector switch is connected and is connected between described the 3rd terminals and the 4th terminals with described the second vacuum pump.
10. the circuit control system of leak-testing apparatus according to claim 9; it is characterized in that; described the first power supply and second source are alternating current; described the first negative pressure control is braked combination switch, the second negative pressure control braking combination switch and the 3rd negative pressure control braking disconnection pass and is all arranged in described sealing radiator, and described venting time delay coil, detection time delay coil and the overtime protection coil of bleeding are on-delay coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562941.5U CN203465064U (en) | 2013-09-11 | 2013-09-11 | Circuit control system of sealing performance detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562941.5U CN203465064U (en) | 2013-09-11 | 2013-09-11 | Circuit control system of sealing performance detection equipment |
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| CN203465064U true CN203465064U (en) | 2014-03-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990951A (en) * | 2017-12-29 | 2019-07-09 | 北京佩特来电器有限公司 | A kind of product protective capacities test equipment and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990951A (en) * | 2017-12-29 | 2019-07-09 | 北京佩特来电器有限公司 | A kind of product protective capacities test equipment and test method |
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Granted publication date: 20140305 Termination date: 20200911 |