CN204330246U - A kind of movable type general-purpose device automatically detected for impermeability - Google Patents
A kind of movable type general-purpose device automatically detected for impermeability Download PDFInfo
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- CN204330246U CN204330246U CN201520020878.1U CN201520020878U CN204330246U CN 204330246 U CN204330246 U CN 204330246U CN 201520020878 U CN201520020878 U CN 201520020878U CN 204330246 U CN204330246 U CN 204330246U
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Abstract
The utility model discloses a kind of movable type general-purpose device automatically detected for impermeability.Described air-tightness detection device comprises the air pump be connected with tested part; The pressure switch be connected with tested part; Relay group, comprise the time relay of the first electromagnetic relay and setting test duration, the first electromagnetic relay and the time relay, air pump and pressure switch connect to form the circuit of device described in the utility model.Air-tightness detection device described in the utility model controls the automatic open close of air pump by adopting the first electromagnetic relay and pressure switch to cooperatively interact, whether the keying of the time relay thus the force value measuring tested part within the test duration of regulation be higher than the low pressure limit value of pressure switch setting, thus the result whether air-leakage test obtaining tested part qualified.
Description
Technical field
The utility model relates to air-tightness detection device, particularly, relates to a kind of movable type general-purpose device automatically detected for impermeability.
Background technology
Impermeability refers to the leakiness of a certain part to liquid or gas, and this index relates to the workmanship and assembly quality etc. of a lot of parts, significant.Air-tightness detection device kind is in the market more, and great majority are all by the inner inflatable to tested part, whether exceedes default maximum pressure difference by measuring tested part pressure difference value at the appointed time thus judges the impermeability of part.
Impermeability automatic detection device in the market mostly adopts sensor as detection system, and adopt PLC or exploitation and composition integrated circuit control module as control system, its cost is relatively high, and structure is also relatively complicated.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of ordinary person of being applicable to carries out air-leakage test universal air-tightness detection device by simple operations, adopt pressure switch as detecting element, adopt relay group as control element, structure is simple, with low cost.
The technical scheme in the invention for solving the above technical problem is:
A kind of air-tightness detection device, comprises
Air pump, is connected with tested part, for inflating to tested part;
Pressure switch, be connected with tested part, determine the low pressure limit the value whether force value of tested part within the predetermined test duration sets higher than described pressure switch for the force value that detects in real time in tested part, thus the result whether air-leakage test obtaining tested part qualified, wherein, described pressure switch comprises the first normally closed contact and the first normally opened contact;
Relay group, comprise the time relay of the first electromagnetic relay and setting test duration, described first electromagnetic relay comprises the 3rd normally opened contact and the second normally closed contact, and the described time relay comprises first and often drives time delay break contact;
Described first electromagnetic relay coil one end is connected with negative input end, the other end is connected with positive input terminal by the first normally closed contact of described pressure switch, described time relay coil is connected in parallel on described first electromagnetic relay coil two ends, the 3rd normally opened contact one end of described first electromagnetic relay is connected with positive input terminal, the other end is connected with negative input end by described air pump, and the second normally closed contact of described first electromagnetic relay often drives time delay break contact by first of the described time relay, the first normally opened contact of pressure switch is connected with negative input end.
Air-tightness detection device described in the utility model controls the automatic open close of air pump by adopting the first electromagnetic relay and pressure switch to cooperatively interact, whether the keying of the time relay thus the force value measuring tested part within the test duration of regulation be higher than the low pressure limit value of pressure switch setting, thus the result whether air-leakage test obtaining tested part qualified, if higher than low pressure limit value, then qualified; If be equal to or less than low pressure limit value, then defective.
Further, described air-tightness detection device comprises the display module be convenient to user and observed, described display module comprises qualified pilot lamp, described relay group comprises the second electromagnetic relay, described second electromagnetic relay comprises the 4th normally closed contact, the described time relay comprises second and often drives time delay break contact, described second electromagnetic relay coil one end is connected with negative input end, the other end is by the first normally opened contact of described pressure switch, first of the time relay is connected with positive input terminal after often opening the second normally closed contact of time delay break contact and the first electromagnetic relay, the 4th normally closed contact one end of described second electromagnetic relay is connected with positive input terminal, the other end often drives time delay break contact by second of the described time relay and qualified pilot lamp is connected with negative input end.
Further, described air-tightness detection device comprises the display module be convenient to user and observed, described display module comprises test pilot lamp, described relay group comprises the second electromagnetic relay, described second electromagnetic relay comprises the 3rd normally closed contact, the described time relay comprises the 3rd and often drives time delay break contact, described second electromagnetic relay coil one end is connected with negative input end, the other end is by the first normally opened contact of described pressure switch, first of the time relay is connected with positive input terminal after often opening the second normally closed contact of time delay break contact and the first electromagnetic relay, the 3rd normally closed contact one end of described second electromagnetic relay is connected with positive input terminal, the other end often drives time delay break contact by the 3rd of the described time relay and described test pilot lamp is connected with negative input end.
Further, described air-tightness detection device comprises the display module be convenient to user and observed, described display module comprises defective pilot lamp, described relay group comprises the second electromagnetic relay and the 3rd electromagnetic relay, described second electromagnetic relay comprises the 4th normally opened contact, described 3rd electromagnetic relay comprises the 5th normally opened contact and the 6th normally opened contact, the 5th normally opened contact one end of described 3rd electromagnetic relay is connected with positive input terminal, the other end is connected with negative input end by described defective pilot lamp, the 4th normally opened contact one end of described second electromagnetic relay is connected with positive input terminal, the other end is connected with negative input end by described 3rd electromagnetic relay coil, 6th normally opened contact of described 3rd electromagnetic relay is connected in parallel on the 4th normally opened contact two ends of described second electromagnetic relay.
Further, the button assembly of person's operation that described air-tightness detection device comprises convenient operation, described button assembly comprises Test Switchboard and switch of sounding all clear, described Test Switchboard one end is connected with positive input terminal, the other end is connected with negative input end by the first normally closed contact of described pressure switch, described first electromagnetic relay coil, the 4th normally opened contact one end of described second electromagnetic relay is connected with positive input terminal, and switch of sounding all clear described in the other end passes through, described 3rd electromagnetic relay coil are connected with negative input end.
Further, the test interface that described air-tightness detection device comprises surge tank, blowdown valve and connects for tested part, described surge tank is connected with described test interface, and described air pump is connected with tested part by described surge tank, and described blowdown valve is arranged on described test interface.
Further, described air-tightness detection device comprise power light and be arranged on positive input terminal for controlling the power switch that whole circuit cut-offs, described power light one end is connected with negative input end, and the other end is connected with positive input terminal.
Further, described air-tightness detection device comprises the tensimeter be connected with tested part, for the real-time pressure value of auxiliary display tested part inside.
Further, described positive input terminal is provided with the power switch controlling whole circuit and cut-off, the reset switch resetted to the control element in whole circuit and ensures the fuse of circuit safety.
Further, the bottom of described air-tightness detection device is provided with the roll wheel assembly being convenient to movement.
To sum up, the beneficial effects of the utility model are: air-tightness detection device described in the utility model controls the automatic open close of air pump by adopting the first electromagnetic relay and pressure switch to cooperatively interact, the keying of the time relay, thus the low pressure limit the value whether force value measuring tested part within the test duration of regulation sets higher than pressure switch, and then judge the impermeability of tested part, with low cost, structure is simple, simple to operate understandable.
Accompanying drawing explanation
Fig. 1 is the front view of the air-tightness detection device shown in the utility model preferred embodiment;
Fig. 2 is the rear view of the air-tightness detection device shown in the utility model preferred embodiment;
Fig. 3 is the inner structure schematic diagram of the air-tightness detection device shown in the utility model preferred embodiment;
Fig. 4 is the control circuit figure of the air-tightness detection device shown in the utility model preferred embodiment;
Fig. 5 is another control circuit figure of the air-tightness detection device shown in the utility model preferred embodiment;
Mark and corresponding parts title in accompanying drawing: housing 10, pressure switch 40, test interface 11, outlet 21, power light 22, power switch 23, reset switch 24, air pump 31, surge tank 32, blowdown valve 33, pressure regulator valve 34, test pilot lamp 61, qualified pilot lamp 62, defective pilot lamp 63, tensimeter 64, Test Switchboard 71, to sound all clear switch 72, first normally closed contact PS1, first normally opened contact PS2, first electromagnetic relay KA, second electromagnetic relay KB, 3rd electromagnetic relay KC, time relay KT, second normally opened contact KA1, 3rd normally opened contact KA2, second normally closed contact KA3, 3rd normally closed contact KB1, 4th normally closed contact KB2, 4th normally opened contact KB3, 5th normally opened contact KC1, 6th normally opened contact KC2, first often opens time delay break contact KT1, second often opens time delay break contact KT2, 3rd often opens time delay break contact KT3, acoustical signal HA, pilot lamp 63A, fuse FU, indicator elment 80.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
Refer to Fig. 1-4, the air-tightness detection device shown in the utility model preferred embodiment, comprise housing 10, power supply module, source of the gas assembly, pressure switch 40, relay group, display module and button assembly.
Described housing 10 is for providing installation and the protection of power supply module, source of the gas assembly, pressure switch 40, relay group, display module and button assembly.Described housing 10 is provided with the test interface 11 connected for tested part, and described source of the gas assembly is communicated with tested part by described test interface 11 and is inflated to tested part.
Described power supply module and source of the gas assembly, pressure switch 40, relay group, display module and button assembly are electrically connected, for providing working power, comprise the outlet 21 of electric connection, power light 22 and power switch 23, described outlet 21 is located on described housing 10, described outlet 21 is connected with civil power by a power lead, for each parts in described air-tightness detection device provide power supply.Described power switch 23 is arranged on positive input terminal, for controlling cut-offfing of the whole circuit of described air-tightness detection device, the positive pole of this positive input terminal external power supply.Described power light 22 one end connects positive input terminal, the other end connects negative input end (negative pole of described negative input end external power supply), whether convenient operation person direct vision is communicated with to this air-tightness detection device with power supply, if be communicated with, then this power light 22 is lighted, if be not communicated with, then this power light 22 extinguishes.As in Fig. 4, Fig. 5, x11 represents the positive input terminal of circuit in described air-tightness detection device, and x21 represents the negative input end of circuit in described air-tightness detection device.
Be appreciated that, except the mode above by mains-supplied, described power supply module can also by arranging powered battery, as accumulator etc., outdoor application can be convenient to or use when being inconvenient to charge, this battery is connected with outlet 21 or is connected with solar panels, is charged by outlet 21 or solar panels, then can use this powered battery when needed.
Described source of the gas assembly comprises air pump 31, surge tank 32 and blowdown valve 33, and described air pump 31 is arranged in housing 10, and described air pump 31 is connected with tested part by described surge tank 32, for inflating to tested part.Position corresponding with described test interface 11 in housing 10 is located at by described surge tank 32, and is connected with described test interface 11, for cushioning the pressure surge of described air pump 31.Described blowdown valve 33 is arranged on described test interface 11, after tested part air-leakage test completes, discharges the pressure in tested part thus is convenient to unload get tested part by opening this blowdown valve 33.
Be appreciated that ensure that airline pressure is no more than permissible value, described source of the gas assembly can also be provided with the pressure regulator valve 34 be connected with described surge tank 32 for the stable of protective device better and serviceable life.
Described pressure switch 40 is connected with tested part, for detecting the pressure in tested part in real time, described pressure switch 40 is electrically connected with relay group, described relay group controls described pressure switch 40 and tests the low pressure limit the value whether tested part that the is attached thereto force value within the test duration of presetting preset higher than described pressure switch 40, thus judges the impermeability of part; If the force value of tested part within the test duration of regulation is equal to or less than the low pressure limit value that described pressure switch 40 presets, then the impermeability of tested part is defective, if the force value of tested part within the test duration of regulation is always higher than the low pressure limit value that described pressure switch 40 presets, then the impermeability of tested part is qualified.Be appreciated that described pressure switch 40 comprises the first normally closed contact PS1 and the first normally opened contact PS2, when the pressure in tested part reaches the upper pressure limit value that described pressure switch 40 presets, described first normally closed contact PS1 disconnects; When the pressure in tested part is equal to or less than the low pressure limit value that described pressure switch 40 presets, described first normally opened contact PS2 closes.
Described relay group is fixedly arranged in described housing 10, for controlling the opening and closing of air pump 31, pressure switch 40 and display module, comprises the first electromagnetic relay KA, the second electromagnetic relay KB, the 3rd electromagnetic relay KC and time relay KT.
Described first electromagnetic relay KA comprises the second normally opened contact KA1, the 3rd normally opened contact KA2, the second normally closed contact KA3, described second electromagnetic relay KB comprises the 3rd normally closed contact KB1, the 4th normally closed contact KB2 and the 4th normally opened contact KB3, described 3rd electromagnetic relay KC comprises the 5th normally opened contact KC1 and the 6th normally opened contact KC2, and described time relay KT comprises first and often opens time delay break contact KT1, second and often open time delay break contact KT2 and the 3rd and often open time delay break contact KT3.
Described display module is convenient to each stage and the testing result that user observes air-leakage test more intuitively, comprise test pilot lamp 61, qualified pilot lamp 62, defective pilot lamp 63, in the present embodiment, described defective pilot lamp 63 can for band acoustical signal HA(is as hummer) pilot lamp 63A, coordinate the mode of sound to point out the sealing of user's tested part defective with light.
Described display module also comprises the tensimeter 64 be connected with tested part, for the real-time pressure value of auxiliary display tested part inside.
Described button assembly comprises Test Switchboard 71 and switch 72 of sounding all clear.
Described Test Switchboard 71 and the first normally closed contact PS1, described power light 22 two ends are connected in parallel on after first electromagnetic relay KA coils connected in series, described second normally opened contact KA1 is connected in parallel on described Test Switchboard 71 two ends, described time relay KT coils from parallel connection of coils is at described first electromagnetic relay KA coil two ends, described power light 22 two ends are connected in parallel on after described 3rd normally opened contact KA2 connects with described air pump 31, described second normally closed contact KA3 and first often opens time delay break contact KT1, first normally opened contact PS2 and the second electromagnetic relay KB is connected in parallel on described power light 22 two ends after connecting, described power light 22 two ends are connected in parallel on after described 3rd normally closed contact KB1 and the 3rd often opens time delay break contact KT3 and described test pilot lamp 61 is connected, described power light 22 two ends are connected in parallel on after described 4th normally closed contact KB2 often opens time delay break contact KT2 with described second and qualified pilot lamp 62 is connected, described 5th normally opened contact KC1 is connected in parallel on described power light 22 two ends after connecting with described defective pilot lamp 63, described 4th normally opened contact KB3 and described switch 72 of sounding all clear, described power light 22 two ends are connected in parallel on after 3rd electromagnetic relay KC coils connected in series, described 6th normally opened contact KC2 is connected in parallel on described 4th normally opened contact KB3 two ends.Described pressure switch 40, power light 22, power switch 23, air pump 31, relay group, display module and button assembly are according to the circuit of above-mentioned annexation Connecting groups cost air-tightness detection device.
Before airtight detection, first set upper pressure limit value and the low pressure limit value of described pressure switch 40 as requested, the test duration of setting-up time relay K T, by having tested the low pressure limit the value whether force value of the tested part after inflation within this test duration sets higher than described pressure switch 40, thus the result whether air-leakage test obtaining tested part qualified, if higher than low pressure limit value, then qualified; If be equal to or less than low pressure limit value, then defective.After having debugged, air tightness test can be started, the gas access end of tested part is connected to described test interface 11 place, described air-tightness detection device is connected with civil power, open the power switch 23 controlling whole circuit, power light 22 is lighted, now, the 3rd normally closed contact KB1 of described second electromagnetic relay KB is closure state, the 3rd of described time relay KT often opens time delay break contact KT3 and disconnects, therefore, the test pilot lamp 61 of series connection with it does not work, open Test Switchboard 71, first electromagnetic relay KA coil and time relay K T coil electricity, described second normally opened contact KA1, 3rd normally opened contact KA2 closes, second normally closed contact KA3 disconnects, three normally opened contact KT1 of time relay KT, KT2, KT3 is all closed, now, the 3rd normally closed contact KB1 of described second electromagnetic relay KB and the 4th normally closed contact KB2 is still in closure state, the test pilot lamp 61 of therefore connecting with the 3rd normally closed contact KB1 and the 4th normally closed contact KB2 respectively and qualified pilot lamp 62 are lighted, during display test mode is in and carries out.The air pump 31 of connecting with described 3rd normally opened contact KA2 starts, inflate to described tested part through described surge tank 32, in the process of inflation, pressure in tested part described in pressure switch 40 real-time testing is until when pressure in tested part reaches the upper pressure limit value that described pressure switch 40 arranges, first normally closed contact PS1 of described pressure switch 40 disconnects, described first electromagnetic relay KA coil and time relay KT coil blackout, second normally opened contact KA1, 3rd normally opened contact KA2 disconnects, second normally closed contact KA3 closes, time relay KT opens the test duration of timing to setting, if within this test duration, the actual pressure value that pressure switch 40 records tested part is equal to or less than the default low pressure limit value of pressure switch 40, then the first normally opened contact PS2 of pressure switch 40 closes, second electromagnetic relay KB coil electricity, described 3rd normally closed contact KB1, 4th normally closed contact KB2 disconnects, described 4th normally opened contact KB3 closes, then test pilot lamp 61 and qualified pilot lamp 62 extinguish, 3rd electromagnetic relay KC coil electricity, described 5th normally opened contact KC1 and the 6th normally opened contact KC2 closes, defective pilot lamp 63(comprises acoustical signal HA and pilot lamp 63A) light and ring alarm, this tested part test failure of prompting operator, now, switch 72 of sounding all clear can be opened, make the 3rd electromagnetic relay KC coil blackout, then can to sound all clear state.If within this test duration, pressure switch 40 records the actual pressure value of tested part always higher than the low pressure limit value that pressure switch 40 is preset, then the first normally opened contact PS2 of pressure switch 40 remains open state always, then described second electromagnetic relay KB coil is in off-position always, the qualified pilot lamp 62 of connecting with the 4th normally closed contact KB2 is in illuminating state always, this tested part test passes of prompting operator, during the test duration that described time relay KT to be achieved presets, often open time delay break contact KT1 for three of described time relay KT, KT2, KT3 all disconnects, test pilot lamp 61 extinguishes, represent that test process terminates.So complete the test of a tested part, open described blowdown valve 33, pressure in release tested part, observe tensimeter 64 and can take off this tested part after described tensimeter 64 pressure shown in described tested part is back to normal value, carry out the test of next part, if the test parameter of next part (setting value of pressure switch 40, the setting value of time relay KT) is constant, then no longer needs through aforementioned debug process and can directly start to test.
Due to Test Switchboard 71 employing in the present embodiment is snap switch, loose one's grip after pressing, this Test Switchboard 71 can be upspring again disconnection, therefore, be provided with the second normally opened contact KA1 in parallel at the two ends of this snap switch, after this snap switch is upspring, this loop still can keep "on" position, and according to other switches disconnected of can not upspringing, then the described second normally opened contact KA1 of this parallel connection can omit.
Be appreciated that, in another preferred embodiment of the utility model, as Fig. 5, can by the second electromagnetic relay KB, 3rd electromagnetic relay KC, second often opens time delay break contact KT2, 3rd often opens time delay break contact KT3, qualified pilot lamp 62, defective pilot lamp 63, test pilot lamp 61 and switch 72 of sounding all clear omit, replace with the indicator elment 80(that connects with the first normally opened contact PS2 as lamp etc.), be convenient to the result that user observes this air-leakage test, 1. within the test duration, when the actual pressure value of the tested part recorded is equal to or less than the default low pressure limit value of pressure switch 40, then the first normally opened contact PS2 of pressure switch 40 closes, indicator elment 80 energising is lighted, show that part impermeability is defective, 2. within the test duration, pressure switch 40 detects that the actual pressure value of tested part is always higher than the low pressure limit value that pressure switch 40 is preset, then the first normally opened contact PS2 of pressure switch 40 remains open state always, and indicator elment 80 keeps extinguishing, and shows that part impermeability is qualified.
Be appreciated that, the circuit positive input terminal of this air-tightness detection device is also provided with the reset switch 24 resetted to the control element in whole circuit, after each tested part has detected, press described reset switch 24, the control element in circuit (described control element specifically refers to relay group and pressure switch 40) can be made to return back to original state.In the present embodiment, described reset switch 24 is arranged on the power output end of described power switch 23.
The power input of described power switch 23 is also connected with fuse FU, ensures the circuit safety of air-tightness detection device.
Be appreciated that the bottom of described housing 10 can also be provided with roll wheel assembly, described air-tightness detection device be convenient to mobile, improve convenience.
In sum, air-tightness detection device described in the utility model adopts the first electromagnetic relay KA, the second electromagnetic relay KB, the 3rd electromagnetic relay KC and time relay KT to form relay group, adopt pressure switch 40 as detecting element, the first electromagnetic relay KA and pressure switch 40 is utilized to jointly control the keying of air pump and the keying of time relay KT, reduce costs, structure is simple, simple to operate understandable, applicable ordinary person carries out detection operation.
As mentioned above, the utility model can be realized preferably.
The above; it is only preferred embodiment of the present utility model; not any pro forma restriction is done to the utility model; according to technical spirit of the present utility model; within spirit of the present utility model and principle; the any simple amendment that above embodiment is done, equivalently replace and improve, within the protection domain all still belonging to technical solutions of the utility model.
Claims (10)
1. an air-tightness detection device, is characterized in that, comprises
Air pump (31), is connected with tested part, for inflating to tested part;
Pressure switch (40), be connected with tested part, determine the low pressure limit the value whether force value of tested part within the predetermined test duration sets higher than described pressure switch for the force value that detects in real time in tested part, thus the result whether air-leakage test obtaining tested part qualified, wherein, described pressure switch (40) comprises the first normally closed contact (PS1) and the first normally opened contact (PS2);
Relay group, comprise the time relay (KT) of the first electromagnetic relay (KA) and setting test duration, described first electromagnetic relay (KA) comprises the 3rd normally opened contact (KA2) and the second normally closed contact (KA3), and the described time relay (KT) comprises first and often drives time delay break contact (KT1);
Coil one end of described first electromagnetic relay (KA) is connected with negative input end, the other end is connected with positive input terminal by first normally closed contact (PS1) of described pressure switch (40), the coils from parallel connection of coils of the described time relay (KT) is at the two ends of described first electromagnetic relay (KA) coil, the 3rd normally opened contact (KA2) one end of described first electromagnetic relay (KA) is connected with positive input terminal, the other end is connected with negative input end by described air pump (31), second normally closed contact (KA3) of described first electromagnetic relay (KA) often drives time delay break contact (KT1) by first of the described time relay (KT), first normally opened contact (PS2) of pressure switch (40) is connected with negative input end.
2. air-tightness detection device according to claim 1, it is characterized in that, described air-tightness detection device comprises the display module be convenient to user and observed, described display module comprises qualified pilot lamp (62), described relay group comprises the second electromagnetic relay (KB), described second electromagnetic relay (KB) comprises the 4th normally closed contact (KB2), the described time relay (KT) comprises second and often drives time delay break contact (KT2), coil one end of described second electromagnetic relay (KB) is connected with negative input end, the other end is by first normally opened contact (PS2) of described pressure switch (40), the second normally closed contact (KA3) that first of the time relay (KT) often drives time delay break contact (KT1) and the first electromagnetic relay (KA) is connected with positive input terminal afterwards, the 4th normally closed contact (KB2) one end of described second electromagnetic relay (KB) is connected with positive input terminal, the other end often drives time delay break contact (KT2) by second of the described time relay (KT) and qualified pilot lamp (62) is connected with negative input end.
3. air-tightness detection device according to claim 1, it is characterized in that, described air-tightness detection device comprises the display module be convenient to user and observed, described display module comprises test pilot lamp (61), described relay group comprises the second electromagnetic relay (KB), described second electromagnetic relay (KB) comprises the 3rd normally closed contact (KB1), the described time relay (KT) comprises the 3rd and often drives time delay break contact (KT3), coil one end of described second electromagnetic relay (KB) is connected with negative input end, the other end is by first normally opened contact (PS2) of described pressure switch (40), the second normally closed contact (KA3) that first of the time relay (KT) often drives time delay break contact (KT1) and the first electromagnetic relay (KA) is connected with positive input terminal afterwards, the 3rd normally closed contact (KB1) one end of described second electromagnetic relay (KB) is connected with positive input terminal, the other end often drives time delay break contact (KT3) by the 3rd of the described time relay (KT) and described test pilot lamp (61) is connected with negative input end.
4. air-tightness detection device according to claim 1, it is characterized in that, described air-tightness detection device comprises the display module be convenient to user and observed, described display module comprises defective pilot lamp (63), described relay group comprises the second electromagnetic relay (KB) and the 3rd electromagnetic relay (KC), described second electromagnetic relay (KB) comprises the 4th normally opened contact (KB3), described 3rd electromagnetic relay (KC) comprises the 5th normally opened contact (KC1) and the 6th normally opened contact (KC2), the 5th normally opened contact (KC1) one end of described 3rd electromagnetic relay (KC) is connected with positive input terminal, the other end is connected with negative input end by described defective pilot lamp (63), the 4th normally opened contact (KB3) one end of described second electromagnetic relay (KB) is connected with positive input terminal, the other end is connected with negative input end by the coil of described 3rd electromagnetic relay (KC), 6th normally opened contact (KC2) of described 3rd electromagnetic relay (KC) is connected in parallel on the 4th normally opened contact (KB3) two ends of described second electromagnetic relay (KB).
5. air-tightness detection device according to claim 4, it is characterized in that, the button assembly of person's operation that described air-tightness detection device comprises convenient operation, described button assembly comprises Test Switchboard (61) and switch of sounding all clear (72), described Test Switchboard (61) one end is connected with positive input terminal, the other end is by first normally closed contact (PS1) of described pressure switch (40), the coil of described first electromagnetic relay (KA) is connected with negative input end, the 4th normally opened contact (KB3) one end of described second electromagnetic relay (KB) is connected with positive input terminal, to sound all clear described in the other end passes through switch (72), the coil of described 3rd electromagnetic relay (KC) is connected with negative input end.
6. air-tightness detection device according to claim 1, it is characterized in that, the test interface (11) that described air-tightness detection device comprises surge tank (32), blowdown valve (33) and connects for tested part, described surge tank (32) is connected with described test interface (11), described air pump (31) is connected with tested part by described surge tank (32), and described blowdown valve (33) is arranged on described test interface (11).
7. air-tightness detection device according to claim 1, it is characterized in that, described air-tightness detection device comprise power light (22) and be arranged on positive input terminal for controlling the power switch (23) that whole circuit cut-offs, described power light (22) one end is connected with negative input end, and the other end is connected with positive input terminal.
8. air-tightness detection device according to claim 1, is characterized in that, described air-tightness detection device comprises the tensimeter (64) be connected with tested part, for the real-time pressure value of auxiliary display tested part inside.
9. air-tightness detection device according to claim 1, it is characterized in that, described positive input terminal is provided with the power switch (23) controlling whole circuit and cut-off, the reset switch (24) resetted to the control element in whole circuit and ensures the fuse (FU) of circuit safety.
10. air-tightness detection device according to claim 1, is characterized in that, the bottom of described air-tightness detection device is provided with the roll wheel assembly being convenient to movement.
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| CN201520020878.1U CN204330246U (en) | 2015-01-13 | 2015-01-13 | A kind of movable type general-purpose device automatically detected for impermeability |
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| CN201520020878.1U CN204330246U (en) | 2015-01-13 | 2015-01-13 | A kind of movable type general-purpose device automatically detected for impermeability |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969877A (en) * | 2017-02-21 | 2017-07-21 | 国网浙江省电力公司嘉兴供电公司 | Electrical equipment application of vacuum automatic monitoring equipment and its monitoring method |
| CN113156857A (en) * | 2021-04-13 | 2021-07-23 | 嘉兴学院 | Air tightness detection device with pressure relief protection function |
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2015
- 2015-01-13 CN CN201520020878.1U patent/CN204330246U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969877A (en) * | 2017-02-21 | 2017-07-21 | 国网浙江省电力公司嘉兴供电公司 | Electrical equipment application of vacuum automatic monitoring equipment and its monitoring method |
| CN106969877B (en) * | 2017-02-21 | 2019-05-07 | 国网浙江省电力公司嘉兴供电公司 | Electrical equipment is vacuum-treated automatic monitoring equipment and its monitoring method |
| CN113156857A (en) * | 2021-04-13 | 2021-07-23 | 嘉兴学院 | Air tightness detection device with pressure relief protection function |
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