CN201137561Y - Diaphram pump one way valve fault automatic diagnosis device - Google Patents
Diaphram pump one way valve fault automatic diagnosis device Download PDFInfo
- Publication number
- CN201137561Y CN201137561Y CNU2007200152692U CN200720015269U CN201137561Y CN 201137561 Y CN201137561 Y CN 201137561Y CN U2007200152692 U CNU2007200152692 U CN U2007200152692U CN 200720015269 U CN200720015269 U CN 200720015269U CN 201137561 Y CN201137561 Y CN 201137561Y
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- way valve
- signal
- diaphragm pump
- isolated
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Abstract
The utility model relates to a diaphragm pump check valve automatic fault diagnosis device, belonging to the diaphragm pump automatic control field, which comprises a switch acquisition part, an analog acquisition part, a relay insulation part, an insulation amplifying part, a PLC and an alarm part, wherein the signal picked by the switch acquisition part is insulated by the relay insulation part to be fed into the input of the PLC, the signal picked by the analog acquisition part is insulated and amplified by the insulation amplifying part to be fed into the input of the PLC, the signal output from the output port of the PLC is transmitted to the input of the alarm part, the relay insulation part is provided between the input of the alarm part and the output of the PLC, the signal output from the output port of the PLC is insulated by the relay insulation part to be transmitted to the input of the alarm part. The utility model can emit alarm signal immediately for the fault in the diaphragm pump check valve, to prevent the loss caused by the fault in the check valve.
Description
Technical field
The utility model belongs to the diaphragm pump automation control area, relates in particular to a kind of diaphragm pump one-way valve fault automatic diagnostic device.
Background technique
At present in diaphragm pump market, no matter be imported product or home equipment, all do not have the diaphragm pump one-way valve fault automatic diagnostic function, because the equipment easily damaged parts life-span is shorter relatively, in the early stage near working life, valve cone, spool in the one-way valve can be leaked by fluid scouring; Perhaps because accidental cause causes the valve cone of equipment card valve, disconnected valve phenomenon to occur.And when these faults took place, operator can't in time find, even find also to lean on skilled surfaceman to go to manually to guess the fault point, can't accomplish promptness, the accuracy of fixing a breakdown.These faults all can cause equipment pressure and flowed fluctuation, and causing influences equipment vibrations life of equipment, or delivery line is damaged, at some key area such as chemical enterprise even can constitute great security threat to surrounding.
The model utility content
The utility model is intended to overcome the deficiencies in the prior art part and provides a kind of after valve cone, spool leakage or valve cone appearance card valve, disconnected valve phenomenon appear in diaphragm pump, by fault diagnosis, can send the diaphragm pump one-way valve fault automatic diagnostic device of alarm signal automatically to operator in the very first time.
For achieving the above object, the utility model can be realized according to following mode:
The diaphragm pump one-way valve fault automatic diagnostic device comprises: switch acquisition part, analog acquisition part, relay isolated part, isolation enlarged portion, PLC and warning part; The signal that described switch acquisition is partly gathered is sent into the input port of PLC after the relay isolated part is isolated; The signal that described analog acquisition is partly gathered is through isolating the input port of sending into PLC after enlarged portion is isolated amplification; The signal of described PLC output port output reaches the input port of the part of reporting to the police.
As a kind of preferred version, the utility model can be furnished with the relay isolated part between the input port of the part of reporting to the police and PLC output port; The signal of described PLC output port output reaches the input port of the part of reporting to the police after the relay isolated part is isolated.
As another kind of preferred version, switch acquisition described in the utility model partly comprises three near switch; Described analog acquisition part can comprise four pressure transmitters.
As the third preferred version, PLC described in the utility model can comprise master chip and expanding element part.
The utility model just can send alarm signal to operator in very short time after diaphragm pump one-way valve breaks down, accomplished the promptness of fixing a breakdown; By system diagnostics, which one-way valve internals the utility model can be accurate to has had and has leaked or which kind of card valve, disconnected valve fault belong to, thereby has accomplished the accuracy of fixing a breakdown.Still whole process system all there is a protective function for diaphragm pump equipment itself, has avoided the loss that causes owing to one-way valve fault.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.Protection domain of the present utility model will not only be confined to the statement of following content.
Fig. 1 is the whole assembling of a utility model schematic representation;
Fig. 2 is the utility model schematic block circuit diagram;
Fig. 3 is the utility model PLC information flow chart;
Fig. 4 is the utility model physical circuit schematic diagram.
Embodiment
Shown in Fig. 1～4, the diaphragm pump one-way valve fault automatic diagnostic device comprises: switch acquisition part, analog acquisition part, relay isolated part, isolation enlarged portion, PLC and warning part; The signal that described switch acquisition is partly gathered is sent into the input port of PLC after the relay isolated part is isolated; The signal that described analog acquisition is partly gathered is through isolating the input port of sending into PLC after enlarged portion is isolated amplification; The signal of described PLC output port output reaches the input port of the part of reporting to the police.The utility model is furnished with the relay isolated part between the input port of the part of reporting to the police and PLC output port; The signal of described PLC output port output reaches the input port of the part of reporting to the police after the relay isolated part is isolated.Switch acquisition described in the utility model partly comprises three near switch.Described analog acquisition partly comprises four pressure transmitters.Described PLC comprises master chip and expanding element part.
As Fig. 1,1. discharging clack box; 2. diaphragm cavity; 3. barrier film; 4. PF oil; 5. charging clack box.Each chamber of septum carries slip to be divided into two stages: 1, discharge stroke; 2, suction stroke.In the discharge stroke, overcome the frictional force action of slip deadweight in the pipeline, inertia and slip and inner-walls of duct, transmit pressure by PF oil, open the discharge port one-way valve, the material in the diaphragm cavity is discharged.PF oil pressure in this stage diaphragm cavity can be the trend of rising, and reaches maximum and last till this end in one-way valve opens moment, and the place, dead point, Cheng Qian of being expert at stops discharge, begins suction subsequently.In the suction stroke, the chamber of septum internal volume becomes big and by feeding pressure feed check valve is opened, and the slip in the supply pipe charges into chamber of septum.The place, dead point stops suction behind stroke, enters the discharge stroke.So circulation.
One, leakage failure state:
1, the discharge end one-way valve is revealed; 2, the feed end one-way valve is revealed.From principle Analysis, suppose that one-way valve is in the bad state of sealing that damages.When (1) the discharge end one-way valve was impaired, in the suction stroke, the part slip of discharge returned chamber of septum by discharge end one-way valve leakage point under the loine pressure effect, showed as at suction time inner septum room pressure to be higher than normal feeding pressure.When (2) suction end one-way valve is impaired, because the pressure in the drainage line is far longer than feed pressure, so part material can be pushed back feeding pipe by suction end one-way valve leakage point when the discharge process, shows as that charging compensating tank internal pressure has than great fluctuation process or is higher than normal feeding pressure in the suction time.
Two, card valve, disconnected valve fault state
If card valve, disconnected valve fault appear in certain chamber of septum feeding valve, according to the slip conveying principle, the chamber of septum internal pressure is normal feeding pressure always; If card valve, disconnected valve fault appear in discharge valve, then the chamber of septum internal pressure is the discharging working pressure always.
The utility model is the installation and measuring device on chamber of septum, monitors the excursion of the PF oil pressure in the diaphragm cavity in real time, judges the one-way valve serviceable condition, and informs that by alarm or the demonstration of automatically controlled picture the operator carries out corresponding maintenance work.
The utility model test monitoring circuit is made up of three parts:
1, primary signal collection, three that comprise test crank shaft position near switch, detects four pressure transmitters that three chamber of septum and charging compensate storehouse feeding pressure.
2, Shu Ru electric signal isolation.Relate to two kinds of electrical signal here, a kind of is that the representative that provides near switch disconnects and the low level and the high level signal of closed two states; Another kind is the analog signals of the 4-20mA that provided by pressure transmitter.Because the electrical signal difference adopts the purpose and the method for isolation processing also inequality.For first kind of switching value signal, because signal has only two states, it will change along with the rotation angle of bent axle in the equipment operation process, switch the shake that moment must produce electrical signal at two states opening and break so, and this shake will certainly have influence on the judgement of control unit.On the other hand, the transmission line of raw electrical signal is directly to introduce electric control box from the Check point of equipment, the signaling line of equipment outer wall of being laid in so is easy to introduce the signal that other have harm, if such danger signal does not have the existence of signal isolated component, will directly burn the programmable controller I/O point of (being called for short PLC).And for the isolation of second kind of analog signals, except the danger signal that will avoid external circuit, main is to play the effect that signal amplifies.The process that analog signals transmits in the line is subjected to certainly will decay will be arranged in the influence of line impedance, and the analog acquisition unit of PLC is limited to the resolving power of signal, so we need add isolated amplifier in the loop.
3, programmable controller (being called for short PLC).He is a kind of collection signals collecting at industrial control, isolate, refresh, latch with multiple functions such as data computation be the electric control device of one.A lot of electric corporations all have representative products, this application be the S7-200 series that SIEMENS is produced.His information flow such as Fig. 3.The execution I/O that constantly repeats in the running of user program refreshes.
4, Shu Chu electric signal isolation.The electrical signal of output only indicates whether out of order switching signal, and these signals are directly given the control centre of diaphragm pump, external circuit and PLC output loop is isolated the safety of protection PLC output point by disconnecting relay.
As shown in Figure 4, relay adopts AHNA21+AHN211Y2 and the AHNA21+AHN20024 that PANASONIC is produced; The KLM-3111 that transmitter adopts the Kunlun seashore company to produce; The CPU224AC/DC/RLY that PLC adopts SIEMENS to produce; The EM231 that the PLC expansion module adopts SIEMENS to produce.
Claims (5)
1, the diaphragm pump one-way valve fault automatic diagnostic device is characterized in that, comprising: switch acquisition part, analog acquisition part, relay isolated part, isolation enlarged portion, PLC and warning part; The signal that described switch acquisition is partly gathered is sent into the input port of PLC after the relay isolated part is isolated; The signal that described analog acquisition is partly gathered is through isolating the input port of sending into PLC after enlarged portion is isolated amplification; The signal of described PLC output port output reaches the input port of the part of reporting to the police.
2, diaphragm pump one-way valve fault automatic diagnostic device according to claim 1 is characterized in that: be furnished with the relay isolated part between the input port of the part of reporting to the police and PLC output port; The signal of described PLC output port output reaches the input port of the part of reporting to the police after the relay isolated part is isolated.
3, diaphragm pump one-way valve fault automatic diagnostic device according to claim 1 and 2 is characterized in that: described switch acquisition partly comprises three near switch.
4, diaphragm pump one-way valve fault automatic diagnostic device according to claim 3 is characterized in that: described analog acquisition partly comprises four pressure transmitters.
5, diaphragm pump one-way valve fault automatic diagnostic device according to claim 4 is characterized in that: described PLC comprises master chip and expanding element part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200152692U CN201137561Y (en) | 2007-10-12 | 2007-10-12 | Diaphram pump one way valve fault automatic diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200152692U CN201137561Y (en) | 2007-10-12 | 2007-10-12 | Diaphram pump one way valve fault automatic diagnosis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137561Y true CN201137561Y (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200152692U Expired - Lifetime CN201137561Y (en) | 2007-10-12 | 2007-10-12 | Diaphram pump one way valve fault automatic diagnosis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137561Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829977A (en) * | 2010-04-15 | 2010-09-15 | 云南大红山管道有限公司 | Locking method of one-way valve |
| CN105673473A (en) * | 2016-03-28 | 2016-06-15 | 昆明理工大学 | Multi-source information collecting device for diaphragm pump one-way valve and installing method for multi-source information collecting device |
| CN105781958A (en) * | 2016-03-28 | 2016-07-20 | 昆明理工大学 | Fault self-diagnosis device for one-way valve of membrane pump and diagnosis method |
| CN106596091A (en) * | 2017-01-25 | 2017-04-26 | 云南大红山管道有限公司 | Non-return valve breakdown detection system |
| CN110671313A (en) * | 2019-08-21 | 2020-01-10 | 云南大红山管道有限公司 | Automatic detection system and detection method for fault of one-way valve of piston diaphragm pump |
-
2007
- 2007-10-12 CN CNU2007200152692U patent/CN201137561Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829977A (en) * | 2010-04-15 | 2010-09-15 | 云南大红山管道有限公司 | Locking method of one-way valve |
| CN101829977B (en) * | 2010-04-15 | 2012-03-07 | 云南大红山管道有限公司 | Locking method of one-way valve of positive displacement diaphragm pistonpump |
| CN105673473A (en) * | 2016-03-28 | 2016-06-15 | 昆明理工大学 | Multi-source information collecting device for diaphragm pump one-way valve and installing method for multi-source information collecting device |
| CN105781958A (en) * | 2016-03-28 | 2016-07-20 | 昆明理工大学 | Fault self-diagnosis device for one-way valve of membrane pump and diagnosis method |
| CN106596091A (en) * | 2017-01-25 | 2017-04-26 | 云南大红山管道有限公司 | Non-return valve breakdown detection system |
| CN110671313A (en) * | 2019-08-21 | 2020-01-10 | 云南大红山管道有限公司 | Automatic detection system and detection method for fault of one-way valve of piston diaphragm pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA YOUSE ( SHENYANG ) PUMP INDUSTRY CO., LTD. Free format text: FORMER OWNER: CHINA YOUSE GROUP SHENYANG METALLURGICAL MACHINERY CO., LTD. Effective date: 20091016 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091016 Address after: No. sixteen, 9 street, Shenyang economic and Technological Development Zone, Liaoning, Shenyang Province, China: 110141 Patentee after: CNMC Shenyang Pump Co., Ltd. Address before: The Liao Shen Liaoning city of Shenyang Province Economic and Technological Development Zone No. 2, zip code: 110141 Patentee before: NFC Shenyang Metallurgical Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081022 |
|
| CX01 | Expiry of patent term |