CN201819796U - Proportional valve surveymeter - Google Patents
Proportional valve surveymeter Download PDFInfo
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- CN201819796U CN201819796U CN201020187627XU CN201020187627U CN201819796U CN 201819796 U CN201819796 U CN 201819796U CN 201020187627X U CN201020187627X U CN 201020187627XU CN 201020187627 U CN201020187627 U CN 201020187627U CN 201819796 U CN201819796 U CN 201819796U
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Abstract
The utility model discloses a proportional valve surveymeter, which relates to the technical field of proportional valve detection devices, and is designed for improving the commissioning accuracy of the proportional valve on a complete machine. The proportional valve surveymeter comprises a proportional valve driving circuit, a detection unit, a host machine control unit and an output unit, wherein the proportional valve drive circuit is used for receiving a detection order transmitted by the host machine control unit and for producing a driving signal according to the detection order so as to utilize the driving signal to control an on-off duty ratio of the proportional valve to be detected; the detection unit is used for measuring performance parameters of the proportional valve to be detected having different on-off duty ratio and for feeding back the measurement information to the host machine control unit; the host machine control unit is used for sending a detection order to the proportional valve driving circuit, for receiving the measurement information fed back by the detection unit and for producing a detection result according to the measurement information; and the output unit is used for receiving the detection result of the host machine control unit and for outputting the detection result. The proportional valve surveymeter can be used for detecting the proportional valve.
Description
Technical field
The utility model relates to proportioning valve pick-up unit technical field, relates in particular to a kind of proportioning valve detector.
Background technology
Proportioning valve is a kind of continuous control valve of electric-controlled type, and promptly the valve port of proportioning valve can be opened with closed fast according to automatically controlled mode, and passes through the size of the frequency control of switch by flow.Proportioning valve can be used for the multiple equipment that needs Control Flow, for example can be applied in the combustion gas series products to regulate combustion gas and Air mixing ratio.
At present, before proportioning valve being installed on the combustion gas series products complete machine, generally it is not accurately detected.Conventional detection method is after being installed to proportioning valve on the complete machine, by the adjusting of Comparative Examples valve complete machine is debugged.
Concrete adjustment method is, use barometer that the air-flow of passing ratio valve is carried out the air pressure detection, when barometrical reading is not in normal range of operation, the staff regulates the electric current that leads to proportioning valve according to barometrical reading, and with this switching frequency of regulating proportioning valve to change the air flow rate of passing ratio valve, thereby improve or reduce the air-flow air pressure of passing ratio valve, make the air pressure of this air-flow be positioned at normal working range.
But, when utilizing barometer to detect debugging to being installed in proportioning valve on the complete machine, because the exact relationship between the electric current that the staff can not learn the passing ratio valve and the air-flow air pressure of proportioning valve, thereby can only rely on individual's experience when debugging, it is not high to debug accuracy.If like this because the debugging of Comparative Examples valve is not enough, and make combustion gas and Air mixing ratio not match, the lighter causes carbon deposit, and weight person then causes detonation, has certain potential safety hazard.
The utility model content
Embodiment of the present utility model provides a kind of proportioning valve detector, to improve being installed in the accuracy of the proportioning valve debugging on the complete machine.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of proportioning valve detector comprises:
The proportioning valve driving circuit is used to receive the sense command that master machine control unit sends, and produces drive signal in view of the above, controls the duty cycle of switching of tested proportioning valve to utilize described drive signal;
Detecting unit, the performance parameter when being used to measure tested proportioning valve and having different duty cycle of switching, and to described master machine control unit feedback metrical information;
Master machine control unit is used for sending sense command to described proportioning valve driving circuit, and the metrical information that receives the detecting unit feedback, and produces testing result according to described metrical information;
Output unit is used to receive the testing result of described master machine control unit, and with this testing result output.
Wherein, the performance parameter of tested proportioning valve comprises electric current by tested proportioning valve and the MEDIA FLOW pressure by tested proportioning valve; Then described testing result comprises by the electric current of tested proportioning valve with by the corresponding relation between the MEDIA FLOW pressure of tested proportioning valve.
For this reason, described detecting unit comprises: reometer is used to measure the electric current by tested proportioning valve; Pressure gauge is used to measure the MEDIA FLOW pressure by tested proportioning valve.
Particularly, described proportioning valve driving circuit comprises:
Tested proportioning valve switching branches, maximum open the valve current branch and minimum is opened the valve current branch;
Described tested proportioning valve switching branches one end connects tested proportioning valve, other end ground connection, and described tested proportioning valve switching branches comprises control end, and described control end is common to connect that described maximum is opened the valve current branch and minimum is opened the valve current branch;
An end was connected described master machine control unit after described maximum was opened the valve current branch and described minimum is opened the parallel connection of valve current branch, and the other end connects described control end.
Wherein, described tested proportioning valve switching branches comprises: first transport and placing device, the described maximum of the common connection of the positive input of described first transport and placing device opens the valve current branch and minimum is opened the valve current branch, and reverse input end connects the emitter of first triode, and output terminal connects the base stage of first triode; First triode, the base stage of described first triode connects the output terminal of described first transport and placing device, and collector connects tested proportioning valve, grounded emitter.
Described maximum is opened the valve current branch and is comprised: slide rheostat, and an end of described slide rheostat connects described master machine control unit, other end ground connection, sliding end connects second transport and placing device; Second transport and placing device, the positive input of described second transport and placing device connects the sliding end of described slide rheostat, and reverse input end connects the output terminal of described second transport and placing device, and output terminal connects the positive input of described first transport and placing device.
Described minimum is opened the valve current branch and is comprised: second triode, and the base stage of described second triode connects described master machine control unit, and collector connects power supply, grounded emitter; The 3rd transport and placing device, the positive input of described the 3rd transport and placing device connects the collector of described second triode, and reverse input end connects the output terminal of described the 3rd transport and placing device, and output terminal connects the positive input of described first transport and placing device.
In addition, described proportioning valve driving circuit also comprises the overheating protection branch road, and an end of described overheating protection branch road connects tested proportioning valve, other end ground connection.
Particularly, described overheating protection branch road comprises backward dioded, and the input end grounding of described backward dioded, output terminal connect tested proportioning valve.
And described proportioning valve detector also comprises medium switch valve driving circuit, is used to receive the sense command that described master machine control unit sends, and produces switching drive signal in view of the above, to utilize opening or closing of described switching drive signal control medium switch valve.
Described medium switch valve driving circuit comprises: the 3rd triode, and the base stage of described the 3rd triode connects described master machine control unit, and collector connects the 4th triode, grounded emitter; The 4th triode, the base stage of described the 4th triode connects the collector of described the 3rd triode, and collector connects power supply, and emitter connects the medium switch valve.
Described output unit comprises display or printer.
The proportioning valve detector that the utility model embodiment provides, owing to can control the duty cycle of switching of tested proportioning valve, and the performance parameter when measuring tested proportioning valve and having different duty cycle of switching, thereby produce the testing result of tested proportioning valve, therefore can be before being installed to tested proportioning valve on the complete machine at first the performance to tested proportioning valve detect, and then according to this testing result the proportioning valve that is installed on the complete machine is debugged, improved the accuracy of debugging.
Description of drawings
Fig. 1 is the composition synoptic diagram of the utility model proportioning valve detector embodiment;
Fig. 2 is the framed structure synoptic diagram of proportioning valve detector shown in Figure 1;
Fig. 3 is the circuit diagram of proportioning valve driving circuit shown in Figure 2;
Fig. 4 is the framed structure synoptic diagram after proportioning valve detector shown in Figure 1 is improved;
Fig. 5 is the circuit diagram of medium switch valve driving circuit shown in Figure 4;
Fig. 6 is the structural representation of the utility model proportioning valve detector embodiment;
Fig. 7 utilizes proportioning valve detector shown in Figure 6 to detect the process synoptic diagram of tested proportioning valve.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment proportioning valve detector is described in detail.
Should be clear and definite, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtained under the creative work prerequisite.
As shown in Figure 1, the proportioning valve detector of the utility model embodiment comprises proportioning valve driving circuit 11, detecting unit 12, master machine control unit 13 and output unit 14.
Described proportioning valve driving circuit 11 is used to receive the sense command that master machine control unit 13 sends, and produces drive signal in view of the above, controls the duty cycle of switching of tested proportioning valve to utilize described drive signal;
Described detecting unit 12, the performance parameter when being used to measure tested proportioning valve and having different duty cycle of switching, and to described master machine control unit 13 feedback metrical informations;
Described master machine control unit 13 is used for sending sense command to described proportioning valve driving circuit 11, and the metrical information that receives detecting unit 12 feedbacks, and produces testing result according to described metrical information;
Described output unit 14 is used to receive the testing result of described master machine control unit 13, and with this testing result output.
Proportioning valve detector in the present embodiment, owing to can control the duty cycle of switching of tested proportioning valve, and the performance parameter when measuring tested proportioning valve and having different duty cycle of switching, thereby produce the testing result of tested proportioning valve, therefore can be before being installed to tested proportioning valve on the complete machine at first the performance to tested proportioning valve detect, and then according to this testing result the proportioning valve that is installed on the complete machine is debugged, improved the accuracy of debugging.
In the present embodiment, for the blending ratio that makes medium and other materials is complementary, for example in the combustion gas series products for combustion gas (being medium) and Air mixing ratio are complementary, need the performance parameter of the tested proportioning valve measured to comprise electric current by tested proportioning valve and the MEDIA FLOW pressure by tested proportioning valve.Wherein, electric current by tested proportioning valve can be corresponding with the duty cycle of switching of tested proportioning valve, and the duty cycle of switching of tested proportioning valve is corresponding with the MEDIA FLOW pressure by tested proportioning valve, and can know the blending ratio of medium and other materials by inference by this MEDIA FLOW pressure.Hence one can see that, by regulating the blending ratio that promptly can regulate medium and other materials by the electric current of tested proportioning valve.
For this reason, as shown in Figure 2, detecting unit described in the present embodiment 12 comprises: reometer 121 is used to measure the electric current by tested proportioning valve; Pressure gauge 122 is used to measure the MEDIA FLOW pressure by tested proportioning valve.Wherein, reometer 121 can be selected high precision milliampere level reometer, and this reometer can be sent to current indication master machine control unit 13.In the embodiment shown in Figure 2, master machine control unit 13 is specifically as follows the MCU host control panel.And pressure gauge 122 can be high-precision pressure sensor, and the MCU host control panel can be judged pressure reading according to the inductance value of pressure gauge 122 or the variation of the magnitude of current.
Therefore corresponding, testing result described in the present embodiment comprises by the electric current of tested proportioning valve with by the corresponding relation between the MEDIA FLOW pressure of tested proportioning valve.This corresponding relation can show as the corresponding relation curve in form, perhaps correspondence table etc.After MCU host control panel (being master machine control unit 13) produces testing result, can testing result be exported by output units 14 such as display or printers.
Need to prove that the utility model is not limited thereto, in other embodiment of the present utility model, difference according to actual needs can also be measured other performances of tested proportioning valve.
As shown in Figure 3, the driving circuit of proportioning valve described in the present embodiment 11 comprises: tested proportioning valve switching branches 111, maximum open valve current branch 112 and minimum is opened valve current branch 113.Wherein tested proportioning valve switching branches 111 1 ends connect tested proportioning valve, other end ground connection, and this tested proportioning valve switching branches 111 comprises control end, and this control end connects jointly that maximum is opened valve current branch 112 and minimum is opened valve current branch 113.And maximum is opened valve current branch 112 and minimum and is opened valve current branch 113 backs in parallel one ends and be connected master machine control unit 13 by the I/O mouth, and the other end connects described control end.
Particularly, as shown in Figure 3, described tested proportioning valve switching branches 111 comprises:
The first transport and placing device IC2B, the positive input of this first transport and placing device IC2B connects jointly that maximum is opened valve current branch 112 and minimum is opened valve current branch 113, reverse input end connects the emitter of the first triode N502, and output terminal connects the base stage of the first triode N502;
The first triode N502, the base stage of this first triode N502 connects the output terminal of the first transport and placing device IC2B, and collector connects tested proportioning valve, grounded emitter.
Wherein, because the output terminal of the first transport and placing device IC2B is not connected to its positive input or reverse input end, therefore the first transport and placing device IC2B works in open loop situations.This moment, the first transport and placing device IC2B can be used as voltage comparator.When the voltage of its positive input during greater than the voltage of reverse input end, its output terminal output high level signal, the base stage of such first triode N502 just receives this high level signal, thereby make collector and the emitter conducting of the first triode N502, make tested proportioning valve and+form path between 24V power supply and the earth potential, thereby control opening of tested proportioning valve.Otherwise, when the voltage of the positive input of the first transport and placing device IC2B during less than the voltage of reverse input end, its output terminal output low level signal, the base stage of such first triode N502 just receives this low level signal, thereby the first triode N502 is ended, and disconnect tested proportioning valve and+path between 24V power supply and the earth potential, close thereby control tested proportioning valve.
As shown in Figure 3, the positive input voltage of the first transport and placing device IC2B is opened valve current branch 112 and minimum by maximum and is opened valve current branch 113 and provide in the present embodiment.
Described maximum is opened valve current branch 112 and is comprised:
Slide rheostat VR501, the end of this slide rheostat VR501 connects described master machine control unit by the I/O mouth, other end ground connection, sliding end connects the second transport and placing device IC501A;
The second transport and placing device IC501A, the positive input of this second transport and placing device IC501A connects the sliding end of slide rheostat VR501, and reverse input end connects the output terminal of this second transport and placing device IC501A, and output terminal connects the positive input of the first transport and placing device IC2B.
Wherein, by the adjusting of slide rheostat VR501, can regulate the maximum that maximum opens in the valve current branch 112 and open the valve electric current resistance.And this maximum is opened the formed voltage of valve electric current is connected to the first transport and placing device IC2B after the second transport and placing device IC501A amplifies positive input, compare with voltage, thereby finally control opening or closing of tested proportioning valve with the reverse input end of the first transport and placing device IC2B.
Described minimum is opened valve current branch 113 and is comprised:
The second triode N501, the base stage of this second triode N501 connects described master machine control unit 13 by the I/O mouth, collector connection+5V power supply, grounded emitter;
The 3rd transport and placing device IC501C, the positive input of the 3rd transport and placing device IC501C connects the collector of the second triode N501, and reverse input end connects the output terminal of the 3rd transport and placing device IC501C, and output terminal connects the positive input of the first transport and placing device IC2B.
Wherein, when described master machine control unit 13 passes through the I/O mouth when the base stage of the second triode N501 sends high level signal, the collector and emitter conducting of the second triode N501, thereby form path between feasible+5V power supply and the earth potential, at this moment the positive input virtual earth of the 3rd transport and placing device IC501C.When described master machine control unit 13 by the I/O mouth when the base stage of the second triode N501 sends low level signal, the second triode N501 ends, this moment the 3rd transport and placing device IC501C positive input connection+5V power supply.This power source voltage is connected to the positive input of the first transport and placing device IC2B after the 3rd transport and placing device IC501C amplifies, compare with the voltage with the reverse input end of the first transport and placing device IC2B, thereby finally control opening or closing of tested proportioning valve.
And as can be seen from Figure 3, described proportioning valve driving circuit 11 also comprises the overheating protection branch road, and an end of this overheating protection branch road connects tested proportioning valve, other end ground connection.If tested proportioning valve overload, this overheating protection branch road can disconnect the voltage that is carried in tested proportioning valve two ends, thereby avoids tested proportioning valve to be subjected to the damage of overcurrent or overvoltage.
Particularly, this overheating protection branch road comprises backward dioded D501, the input end grounding of this backward dioded D501, and output terminal connects tested proportioning valve.
In addition, as shown in Figure 4, described proportioning valve detector also comprises medium switch valve driving circuit 15, be used to receive the sense command that master machine control unit 13 sends, and produce switching drive signal in view of the above, to utilize opening or closing of described switching drive signal control medium switch valve 2, press thereby form different pipes according to different medium kinds.The MEDIA FLOW that the opening of medium switch valve 2 can allow medium source 3 is to tested proportioning valve, otherwise the MEDIA FLOW that the closing of medium switch valve 2 then stops medium source 3 is to tested proportioning valve.Medium in the present embodiment can be gas (as combustion gas) or liquid etc.
Particularly as shown in Figure 5, this medium switch valve driving circuit 15 comprises:
The 3rd triode N403, the base stage of the 3rd triode N403 connects described master machine control unit 13, and collector connects the 4th triode P403, grounded emitter;
The 4th triode P403, the base stage of the 4th triode P403 connects the collector of the 3rd triode N403, collector connection+24V power supply, emitter connects the medium switch valve.
In the present embodiment, the voltage of drive medium switch valve is general to be required about+24V, but the voltage of the control signal of being sent by described master machine control unit 13 is difficult to direct drive medium switch valve often about+5V.For this reason, the control signal sent of described master machine control unit 13 needs control medium switch valve indirectly.Wherein, when the control signal of sending when described master machine control unit 13 is high level, the base stage of the 3rd triode N403 receives this high level, make the collector and emitter conducting of the 3rd triode N403, thereby feasible+24V power supply is connected to the base stage of the 4th triode P403, the base stage of such the 4th triode P403 receives high level, thereby make the collector and emitter conducting of the 4th triode P403, so just the medium switch valve and+form path between 24V power supply and the earth potential, and the control medium switch valve is opened.Otherwise when the control signal of sending when described master machine control unit 13 was low level, the medium switch valve cut out.
The process of the proportioning valve detector detection ratio valve that utilizes in the present embodiment is described below in conjunction with Fig. 6 and Fig. 7.
At first, in described proportioning valve detector, install tested proportioning valve additional after, Comparative Examples valve detector powers on;
The second, Comparative Examples valve detector carries out fault detect, comprises whether exist leakage etc., the apparatus and method of this fault detect can be used apparatus and method known in the art if detecting medium pipeline;
The 3rd, the starting up;
The 4th, the MCU control panel is provided with requirement to proportioning valve driving circuit and medium switch valve driving circuit transmission sense command according to the user of storage in advance.Described proportioning valve driving circuit receives sense command, and produces drive signal according to this sense command, controls the duty cycle of switching of tested proportioning valve to utilize this drive signal.Described medium switch valve driving circuit receives sense command, and produces switching drive signal according to this sense command, to utilize opening or closing of described switching drive signal control medium switch valve.
The 5th, detecting unit detects the performance parameter of tested proportioning valve, and to described MCU control panel feedback metrical information.As utilize pressure gauge to detect MEDIA FLOW voltage by tested proportioning valve, the electric current that utilizes reometer to detect to pass through tested proportioning valve etc.
The 6th, the MCU control panel receives described metrical information, and generates testing result in view of the above.This testing result comprises by the electric current of tested proportioning valve with by corresponding relation between the MEDIA FLOW pressure of tested proportioning valve etc.
At last, output unit receives the testing result that the MCU control panel sends, and this testing result is exported.Wherein this output unit can be selected LCD display or printer.
As shown in the above description, the proportioning valve detector of present embodiment has following beneficial effect:
(1) can control the duty cycle of switching of tested proportioning valve, and the performance parameter when measuring tested proportioning valve and having different duty cycle of switching, thereby produce the testing result of tested proportioning valve, therefore can be before being installed to tested proportioning valve on the complete machine at first the performance to tested proportioning valve detect, and then according to this testing result the proportioning valve that is installed on the complete machine is debugged, improved the accuracy of debugging.
Especially for the combustion gas series products, can obtain by the electric current of tested proportioning valve with by the corresponding relation between the MEDIA FLOW pressure of tested proportioning valve, thereby can regulate the electric current that passes through tested proportioning valve according to this corresponding relation, and and then regulate MEDIA FLOW pressure by tested proportioning valve, so that combustion gas and Air mixing ratio are complementary, avoid the generation of carbon deposit and deflagration phenomenon, eliminate safe hidden trouble.
(2) the passing ratio valve-driving circuit can be regulated the electric current that is carried on the tested proportioning valve, thereby can make described proportioning valve detector have multiple adjustable electric current preset state, with the detection requirement of the proportioning valve of compatible different model.
(3) because at each proportioning valve, its error profile disperses, thereby can't know the error profile of other proportioning valves by inference according to the result that the Comparative Examples valve carries out sampling Detection.And utilize described proportioning valve detector can each proportioning valve all be detected, thereby can comparatively accurately measure the performance parameter of each proportioning valve.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (11)
1. a proportioning valve detector is characterized in that, comprising:
The proportioning valve driving circuit is used to receive the sense command that master machine control unit sends, and produces drive signal in view of the above, controls the duty cycle of switching of tested proportioning valve to utilize described drive signal;
Detecting unit, the performance parameter when being used to measure tested proportioning valve and having different duty cycle of switching, and to described master machine control unit feedback metrical information;
Master machine control unit is used for sending sense command to described proportioning valve driving circuit, and the metrical information that receives the detecting unit feedback, and produces testing result according to described metrical information;
Output unit is used to receive the testing result of described master machine control unit, and with this testing result output.
2. proportioning valve detector according to claim 1 is characterized in that, described detecting unit comprises:
Reometer is used to measure the electric current by tested proportioning valve;
Pressure gauge is used to measure the MEDIA FLOW pressure by tested proportioning valve.
3. proportioning valve detector according to claim 1 is characterized in that, described proportioning valve driving circuit comprises:
Tested proportioning valve switching branches, maximum open the valve current branch and minimum is opened the valve current branch;
Described tested proportioning valve switching branches one end connects tested proportioning valve, other end ground connection, and described tested proportioning valve switching branches comprises control end, and described control end is common to connect that described maximum is opened the valve current branch and minimum is opened the valve current branch;
An end was connected described master machine control unit after described maximum was opened the valve current branch and described minimum is opened the parallel connection of valve current branch, and the other end connects described control end.
4. proportioning valve detector according to claim 3 is characterized in that, described tested proportioning valve switching branches comprises:
First transport and placing device, the described maximum of the common connection of the positive input of described first transport and placing device opens the valve current branch and minimum is opened the valve current branch, and reverse input end connects the emitter of first triode, and output terminal connects the base stage of first triode;
First triode, the base stage of described first triode connects the output terminal of described first transport and placing device, and collector connects tested proportioning valve, grounded emitter.
5. proportioning valve detector according to claim 4 is characterized in that, described maximum is opened the valve current branch and comprised:
Slide rheostat, an end of described slide rheostat connects described master machine control unit, other end ground connection, sliding end connects second transport and placing device;
Second transport and placing device, the positive input of described second transport and placing device connects the sliding end of described slide rheostat, and reverse input end connects the output terminal of described second transport and placing device, and output terminal connects the positive input of described first transport and placing device.
6. proportioning valve detector according to claim 4 is characterized in that, described minimum is opened the valve current branch and comprised:
Second triode, the base stage of described second triode connects described master machine control unit, and collector connects power supply, grounded emitter;
The 3rd transport and placing device, the positive input of described the 3rd transport and placing device connects the collector of described second triode, and reverse input end connects the output terminal of described the 3rd transport and placing device, and output terminal connects the positive input of described first transport and placing device.
7. proportioning valve detector according to claim 3 is characterized in that, described proportioning valve driving circuit also comprises the overheating protection branch road, and an end of described overheating protection branch road connects tested proportioning valve, other end ground connection.
8. proportioning valve detector according to claim 7 is characterized in that, described overheating protection branch road comprises backward dioded, and the input end grounding of described backward dioded, output terminal connect tested proportioning valve.
9. proportioning valve detector according to claim 1, it is characterized in that, also comprise medium switch valve driving circuit, be used to receive the sense command that described master machine control unit sends, and produce switching drive signal in view of the above, to utilize opening or closing of described switching drive signal control medium switch valve.
10. proportioning valve detector according to claim 9 is characterized in that, described medium switch valve driving circuit comprises:
The 3rd triode, the base stage of described the 3rd triode connects described master machine control unit, and collector connects the 4th triode, grounded emitter;
The 4th triode, the base stage of described the 4th triode connects the collector of described the 3rd triode, and collector connects power supply, and emitter connects the medium switch valve.
11. proportioning valve detector according to claim 1 is characterized in that described output unit comprises display or printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020187627XU CN201819796U (en) | 2010-05-12 | 2010-05-12 | Proportional valve surveymeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020187627XU CN201819796U (en) | 2010-05-12 | 2010-05-12 | Proportional valve surveymeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201819796U true CN201819796U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020187627XU Expired - Lifetime CN201819796U (en) | 2010-05-12 | 2010-05-12 | Proportional valve surveymeter |
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| CN (1) | CN201819796U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879186A (en) * | 2011-07-16 | 2013-01-16 | 施杰 | TST2811 valve signal control analyzer |
| CN103091095A (en) * | 2013-01-11 | 2013-05-08 | 浙江大学台州研究院 | Pneumatic proportion pressure valve testing device |
| CN105571846A (en) * | 2015-12-16 | 2016-05-11 | 宁波宝新不锈钢有限公司 | Portable electro-hydraulic proportional valve fault diagnostic instrument |
| CN109540500A (en) * | 2018-12-29 | 2019-03-29 | 意赛德（天津）自动化仪器有限公司 | A kind of electric Proportion valve detection device |
| CN111649933A (en) * | 2020-06-11 | 2020-09-11 | 宁波世纪恒祥自控技术有限公司 | Universal calibration system and calibration method for slide valve |
-
2010
- 2010-05-12 CN CN201020187627XU patent/CN201819796U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879186A (en) * | 2011-07-16 | 2013-01-16 | 施杰 | TST2811 valve signal control analyzer |
| CN103091095A (en) * | 2013-01-11 | 2013-05-08 | 浙江大学台州研究院 | Pneumatic proportion pressure valve testing device |
| CN103091095B (en) * | 2013-01-11 | 2015-08-19 | 浙江大学台州研究院 | Pneumatic proportional pressure valve test unit |
| CN105571846A (en) * | 2015-12-16 | 2016-05-11 | 宁波宝新不锈钢有限公司 | Portable electro-hydraulic proportional valve fault diagnostic instrument |
| CN105571846B (en) * | 2015-12-16 | 2018-06-26 | 宁波宝新不锈钢有限公司 | A kind of portable electro-hydraulic proportional valve failure diagnostic apparatus |
| CN109540500A (en) * | 2018-12-29 | 2019-03-29 | 意赛德（天津）自动化仪器有限公司 | A kind of electric Proportion valve detection device |
| CN111649933A (en) * | 2020-06-11 | 2020-09-11 | 宁波世纪恒祥自控技术有限公司 | Universal calibration system and calibration method for slide valve |
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