CN204007971U - The valve body opening force proving installation of urea volume pump - Google Patents
The valve body opening force proving installation of urea volume pump Download PDFInfo
- Publication number
- CN204007971U CN204007971U CN201420332773.5U CN201420332773U CN204007971U CN 204007971 U CN204007971 U CN 204007971U CN 201420332773 U CN201420332773 U CN 201420332773U CN 204007971 U CN204007971 U CN 204007971U
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- Prior art keywords
- valve base
- fixed head
- valve body
- cylinder
- base fixed
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000004202 carbamide Substances 0.000 title claims abstract description 42
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 15
- 238000005259 measurement Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a kind of urea metering pump valve body opening force proving installation, comprise base plate, on base plate, there are column and lower valve base fixed head, wherein, on lower valve base fixed head, lower valve base is installed, cylinder is installed on column, and the piston rod external part of cylinder is connected with upper valve base fixed head, upper valve base fixed head stretches out retraction with the piston rod of cylinder, moves up and down; The upper valve base corresponding with lower valve base is installed on upper valve base fixed head.In use procedure, in conjunction with measuring instrument or electro connecting pressure gauge and pressure transducer, carry out the detection of urea metering pump valve body, directly show testing result, accuracy of detection is high, and operating efficiency is high.
Description
Technical field
The utility model relates to vehicle exhaust aftertreatment field, relates in particular to a kind of metering of the urea for diesel engine vent gas aftertreatment pump valve body opening force proving installation.
Background technology
Valve body is a kind of common fluid accessories, is widely used in commercial production and life, and it is to open and close by fluid, controls the break-make of fluid.On the urea volume pump of known diesel engine vent gas aftertreatment, also there is valve body, the main control to urea volume pump emitted dose.The urea metering pump valve body opening force of diesel engine vent gas aftertreatment need to accurately be tested, to improve the measuring accuracy of urea volume pump.With artificial ventilation's body or liquid, urea metering pump valve body was measured in the past, most still by eye-observation, measurement inconvenient operation, measurement result is also inaccurate, and it is low to measure efficiency.
The existing metering to diesel engine vent gas aftertreatment urea pump valve body, utilizes pneumatically powered hydraulic pump to realize the injection of urea volume pump conventionally.As Chinese patent application (publication number: CN103114896A), a kind of urea solution metering jetting system is disclosed, comprise pump, urea tank, stepper motor and nozzle, the outlet of described urea tank is connected to the upstream end of pump successively by prefilter, the first variable volume part and the first retaining valve, described delivery side of pump is connected on nozzle by the second retaining valve, the second variable volume part and filtrator successively, on described pump, is connected with stepper motor; Between described filtrator and nozzle, be provided with pressure valve; Between described nozzle and filtrator, be provided with sensor, described stepper motor is connected with control module, described control module is connected with nozzle with sensor, pressure and the opening time of described control module for carrying out Control Nozzle place urea liquid by the rotating speed of stepper motor.
The metering of urea solution metering pump realizes by the ultimate principle of electromagnetic pump, as Chinese patent application (publication number: CN102758672A) under normal operating conditions, volume pump coil electricity produces magnetic field.Metering piston is a permanent magnet, and the electromagnetic force of metered pump coil also moves downward.Now back-moving spring is compressed, and the urea liquid of inside, urea solution metering chamber starts metering and boosts.Unnecessary urea flows out from reverse flow valve, and urea liquid to be sprayed enters urea liquid nozzle.When spray finishing, volume pump coil electromagnetism power disappears, metering piston resets that move upward under the elastic force of back-moving spring, and now urea liquid enters into by inlet one-way valve that urea measurement chamber is inner waits for injection next time.In this course of work, with the rectilinear motion of metering piston and the sealing of measurement chamber, realize the accurate measurement of urea liquid.
Chinese patent application (publication number: CN102680217A) disclose a kind of retaining valve opening pressure detecting device that is applied to, comprise device body, the pressure transducer that can move along device body is installed on device body, pressure transducer with can be connected with the sensor contact of retaining valve contact, between the valve body of retaining valve and one-way valve spring, DC circuit is set, the pilot lamp for detection of DC circuit break-make is installed in DC circuit.This device can be convenient for measuring out the minimum opening pressure of retaining valve, and with respect to hydraulic pressure, pneumatic shuttle, simple in structure, producing process is easy, cost, detection method is simple, detect effect than conventional method more close to actual conditions.
But, the size of urea metering pump valve body opening force, urea volume pump is sprayed to degree of accuracy to be affected larger, the present situation of test valve body opening force is at present, and the valve body one end sealing with the plain volume pump of manually helping a small child urinate by holding his legs apart, then passes into fluid, urea metering pump valve body is opened, opening in a flash, by measuring apparatus, reading hydrodynamic pressure size, be the minimum force that urea metering pump valve body is opened.Can directly affect the injection degree of accuracy of urea volume pump like this, seriously likely cause urea volume pump to be blocked, not hydrojet.And complex structure, working strength is large, measures and is forbidden, and efficiency is not high.
Summary of the invention
The purpose of this utility model is, a kind of urea metering pump valve body opening force proving installation is provided, and can be convenient for measuring out the size of urea metering pump valve body opening force, and simple in structure, reliable, simple and safe operation, and work efficiency is high, and measurement accuracy is high.
In order to realize above-mentioned task, the utility model extracts following technical solution:
A kind of urea metering pump valve body opening force proving installation, comprise base plate, it is characterized in that, on base plate, there are column and lower valve base fixed head, wherein, on lower valve base fixed head, lower valve base is installed, cylinder is installed on column, the piston rod external part of cylinder is connected with upper valve base fixed head, upper valve base fixed head stretches out retraction with the piston rod of cylinder, moves up and down; The upper valve base corresponding with lower valve base is installed on upper valve base fixed head.
Other feature of the present utility model is:
Described lower valve base fixed head and upper valve base fixed head have T-shaped groove.
Urea of the present utility model metering pump valve body opening force proving installation, carries out the detection of urea metering pump valve body in conjunction with measuring instrument or electro connecting pressure gauge and pressure transducer in use procedure, directly shows testing result, and accuracy of detection is high, and operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is urea metering pump valve body opening force proving installation schematic diagram of the present utility model;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the operational flow diagram of fluid.
Mark in figure represents respectively: 1, base plate, 2, lower valve base fixed head, 3, lower valve base, 4, upper valve base, 5, upper valve base fixed head, 6, column, 7, cylinder.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1 to Figure 2, the present embodiment provides a kind of urea metering pump valve body opening force proving installation, comprises base plate 1, on base plate 1, there are column 6 and lower valve base fixed head 2, wherein, lower valve base 3 is installed on lower valve base fixed head 2, cylinder 7 is installed on column 6; The piston rod external part of cylinder 7 is connected with upper valve base fixed head 5, and upper valve base fixed head 5 stretches out retraction with the piston rod of cylinder 7, moves up and down; The upper valve base 4 corresponding with lower valve base 3 is installed on upper valve base fixed head 5.
Lower valve base fixed head 2 is positioned at column 6 one sides, on, lower valve base fixed head (2, 5) on, be processed with T-shaped groove, make, lower valve base (3, 4) be arranged in this T-shaped groove, and can conveniently adjust, lower valve base (3, 4) position, column 6 is arranged on base plate 1, cylinder 7 is arranged on column 6, upper valve base fixed head 5 is arranged on the piston rod external part of cylinder 7, upper valve base fixed head 5 stretches out retraction with the piston rod of cylinder 7, move up and down, on, lower valve base (3, 4) first not locking, tested valve body is put into lower valve base 3, connect the first not ventilation of source of the gas of cylinder 7, the upper valve base fixed head 5 that cylinder 7 piston rods are connected is slowly depressed, adjust upper valve base 4 and lower valve base 3 positions, make upper valve base 4 be pressed into tested valve body, then upper valve base 4 is connected with 5 lockings of upper valve base fixed head, lower valve base 3 is connected with 2 lockings of lower valve base fixed head.T-shaped groove is for when surveying the valve body of different size, if change upper and lower valve seat (3,4) that valve body is corresponding just can, efficiently facilitate, cost-saving.
The air supply system being connected with cylinder 7 is this area conventional (referring to Fig. 3), comprise gas source purification device, gas source purification device is connecting band table pressure regulator valve 1 and band table pressure regulator valve 2 respectively, and wherein, band table pressure regulator valve 1 is respectively by solenoid valve 1 and solenoid valve 2 control cylinders 204 and briquetting cylinder 208; Band table pressure regulator valve 2 is with table pressure maintaining valve connecting line solenoid valve by precision.
Adopt the urea metering pump valve body opening force proving installation of above-described embodiment, can carry out the detection of urea metering pump valve body in conjunction with existing measuring instrument and pressure transducer or electro connecting pressure gauge and pressure transducer.Be about to pipeline electromagnetic valve Bonding pressure sensor, measuring instrument or electro connecting pressure gauge and tested valve body.
In measuring instrument and electro connecting pressure gauge, dispose Programmable Logic Controller (PLC), and set cylinder 7 movement travels, pressure transducer is connected in tested valve body one side, be placed in lower valve base together with tested valve body, the connection wiring of pressure transducer access measuring instrument or electro connecting pressure gauge input terminal.O-ring seal is all housed in upper and lower valve seat, when valve body opening force detects, good seal, being unlikely gas leakage affects detection accuracy.
Before test, guarantee that the source of the gas of cylinder 7 is connected, the pressure of measuring instrument or electro connecting pressure gauge is transferred to the detected pressures scope needing; Programmable Logic Controller (PLC) is set cylinder 7 movement travels (Industry Control logic controller (PLC) is provided by professional PLC manufacturer, and field adjustable, meets technical requirement, and after sale service is provided) according to the valve body detecting.
Test process is as follows:
1, be combined with the test of measuring instrument and pressure transducer:
Connect the source of the gas of cylinder 7 and the power supply of measuring instrument, measuring instrument shows that pressure is 0000, the tested valve body of Bonding pressure sensor is put in lower valve base, then press start button, cylinder action moves downward, upper valve base moves downward with cylinder piston rod, cylinder moving is to stroke stop motion is set, upper lower valve base compresses tested valve body, controlling fluid break-make pipeline electromagnetic valve opens, fluid flows into tested valve body, before valve body is not opened, in pressure maintaining period, the tensimeter numerical value of measuring instrument starts to change by 0000 and starts to become greatly, pressure increases to some values, valve body is opened, valve body is opened in a flash, measuring instrument is recorded maximum opening force, be the maximum opening force of tested valve body, valve body is opened fluid and is released, the pressure transducer that the valve body other end connects senses and releases fluid, controlling fluid break-make pipeline electromagnetic valve closes.Complete a valve body Opening force measurement, when institute's dynamometry is in setting range, qualified pilot lamp is bright, represents that institute's side valve body is certified products; If not in institute's dynamometry in setting range, qualified pilot lamp does not work, represent to survey product defective.
2, adopt the test of electro connecting pressure gauge and pressure transducer:
Connect source of the gas and the electric contact pressure apparent source of cylinder 7, the tested valve body of Bonding pressure sensor is put in lower valve base, then press start button, cylinder action moves downward, upper valve base moves downward with cylinder piston rod, cylinder moving is to stroke stop motion is set, upper lower valve base compresses tested valve body, controlling fluid break-make pipeline electromagnetic valve opens, fluid flows into tested valve body, before valve body is not opened, in pressure maintaining period, the indicator of electro connecting pressure gauge swings, the pressure value that electro connecting pressure gauge shows starts to change by 0 and starts to become greatly, pressure increases to some value valve bodies and opens, valve body is opened in a flash, be the maximum opening force of tested valve body, valve body is opened fluid and is released, the pressure transducer that the valve body other end connects senses and releases fluid, controlling fluid break-make pipeline electromagnetic valve closes.Complete a valve body Opening force measurement, when institute's dynamometry is in electro connecting pressure gauge setting range, qualified pilot lamp is bright, represents that institute's side valve body is certified products; If not in institute's dynamometry in setting range, qualified pilot lamp does not work, represent to survey product defective.
Claims (2)
1. a urea measures pump valve body opening force proving installation, comprise base plate (1), it is characterized in that, on base plate (1), there are column (6) and lower valve base fixed head (2), wherein, lower valve base (3) is installed on lower valve base fixed head (2), cylinder (7) is installed on column (6); The piston rod external part of cylinder (7) is connected with upper valve base fixed head (5), upper valve base fixed head (5) stretches out retraction with the piston rod of cylinder (7), moves up and down; On upper valve base fixed head (5), be provided with and upper valve base (4) that lower valve base (3) is corresponding.
2. urea metering pump valve body opening force proving installation as claimed in claim 1, is characterized in that, described lower valve base fixed head (2) and upper valve base fixed head (5) have T-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332773.5U CN204007971U (en) | 2014-06-20 | 2014-06-20 | The valve body opening force proving installation of urea volume pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332773.5U CN204007971U (en) | 2014-06-20 | 2014-06-20 | The valve body opening force proving installation of urea volume pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204007971U true CN204007971U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420332773.5U Expired - Lifetime CN204007971U (en) | 2014-06-20 | 2014-06-20 | The valve body opening force proving installation of urea volume pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN204007971U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328668A (en) * | 2017-07-12 | 2017-11-07 | 昆明理工大学 | A kind of ferrous materials malleability method of testing and device |
-
2014
- 2014-06-20 CN CN201420332773.5U patent/CN204007971U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328668A (en) * | 2017-07-12 | 2017-11-07 | 昆明理工大学 | A kind of ferrous materials malleability method of testing and device |
| CN107328668B (en) * | 2017-07-12 | 2023-05-12 | 昆明理工大学 | Method and device for testing forgeability of steel material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Urea metering pump valve opening force testing device Effective date of registration: 20160517 Granted publication date: 20141210 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Qintai Automobile Fittings Co., Ltd. Registration number: 2016610000016 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710043 Xi'an City, the new city of happiness Road, No., No. 37 Patentee after: Xi''an Qin Tai Automobile Emission Technology Co., Ltd. Address before: 710043 Xi''an City, the new city of happiness Road, No., No. 37 Patentee before: Xi'an Qintai Automobile Fittings Co., Ltd. |
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| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20170629 Registration number: 2016610000016 Pledgor after: Xi'an Qin Tai Automobile Emission Technology Co., Ltd. Pledgor before: Xi'an Qintai Automobile Fittings Co., Ltd. |
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| PM01 | Change of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170705 Granted publication date: 20141210 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Qin Tai Automobile Emission Technology Co., Ltd. Registration number: 2016610000016 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Urea metering pump valve opening force testing device Effective date of registration: 20170711 Granted publication date: 20141210 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Qin Tai Automobile Emission Technology Co., Ltd. Registration number: 2017610000064 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180626 Granted publication date: 20141210 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Qin Tai Automobile Emission Technology Co., Ltd. Registration number: 2017610000064 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Urea metering pump valve opening force testing device Effective date of registration: 20180712 Granted publication date: 20141210 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Qin Tai Automobile Emission Technology Co., Ltd. Registration number: 2018610000104 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190611 Granted publication date: 20141210 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Qin Tai Automobile Emission Technology Co., Ltd. Registration number: 2018610000104 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |