阅读说明：本技术 一种单体泵密封副泄漏量测试装置 (A kind of monoblock pump sealing pair leakage test device ) 是由 何双毅 王杰 吕帆 吴小军 王敏 李华乐 于 2019-08-07 设计创作，主要内容包括：本发明提供了一种单体泵密封副泄漏量测试装置,包括气泵,气泵管路连接至单体泵,单体泵本体安装在单体泵装夹装置内部,控制阀连接至控制阀压紧机构,控制阀的锥面连接至控制阀锥面集气工装,柱面连接至控制阀柱面集气工装,柱塞的柱面连接至柱塞副柱面集气工装,外部安装柱塞位置控制机构,控制阀锥面集气工装、控制阀柱面集气工装、柱塞副柱面集气工装均管路连接至电磁阀,电磁阀的一侧安装气体流量传感器,另一侧安装电控单体泵驱动器,电磁阀、气体流量传感器、电控单体泵驱动器和控制阀压紧机构均信号连接至测试控制系统。本发明所述的单体泵密封副泄漏量测试装置,具有测试效率高、测试数据实时处理、测试结果易于观测等优点。(The present invention provides a kind of monoblock pump sealing pair leakage test devices, including air pump, air pump pipeline is connected to monoblock pump, monoblock pump ontology is mounted on inside monoblock pump clamping device, control valve is connected to control valve hold-down mechanism, the conical surface of control valve is connected to control valve conical surface gas collection tooling, cylinder is connected to control valve cylinder gas collection tooling, the cylinder of plunger is connected to plunger pair cylinder gas collection tooling, outside installation plunger position control mechanism, control valve conical surface gas collection tooling, control valve cylinder gas collection tooling, the plunger pair equal piping connection of cylinder gas collection tooling is to solenoid valve, the side of solenoid valve is installed by gas flow sensor, the other side is installed by electronically controlled unit pump driver, solenoid valve, gas flow sensor, electronically controlled unit pump driver and the equal signal of control valve hold-down mechanism are connected to test control system.Monoblock pump sealing pair leakage test device of the present invention has many advantages, such as that testing efficiency is high, test data is handled in real time, test result is easy to observe.)

1. a kind of monoblock pump sealing pair leakage test device, it is characterised in that: driven including air pump, solenoid valve, electronically controlled unit pump Dynamic device and gas flow sensor, air pump pipeline are connected to monoblock pump, and monoblock pump ontology is mounted on inside monoblock pump clamping device, The control valve of monoblock pump is externally attached to control valve hold-down mechanism, and the conical surface of control valve is connected to control valve conical surface gas collection tooling, The cylinder of control valve is connected to control valve cylinder gas collection tooling, and the cylinder of monomer pump plunger is connected to plunger pair cylinder gas collection work Dress, outside installation plunger position control mechanism, control valve conical surface gas collection tooling, control valve cylinder gas collection tooling, plunger pair cylinder For the equal piping connection of gas collection tooling to the front end inlet of solenoid valve, gas flow sensor, other side peace are installed in the side of solenoid valve Electronically controlled unit pump driver is filled, solenoid valve, gas flow sensor, electronically controlled unit pump driver and control valve hold-down mechanism are believed Number it is connected to test control system.

2. a kind of monoblock pump sealing pair leakage test device according to claim 1, it is characterised in that: testing and control system The controller of system is computer.

3. a kind of monoblock pump sealing pair leakage test device according to claim 1, it is characterised in that: air pump max-flow Amount is not less than 10L/min.

4. a kind of monoblock pump sealing pair leakage test device according to claim 1, it is characterised in that: monoblock pump clamping Device includes clamping device ontology, control valve conical surface gas collection tooling, control valve cylinder gas collection tooling and plunger pair cylinder gas collection work Dress, clamping device ontology include integrated upper and lower part, and top is rectangular case structure, and lower part is hollow cylinder structure, on Control valve conical surface gas collection tooling is installed in the side in portion, and control valve cylinder gas collection tooling is installed in the other side, and the external of lower part is socketed column Subpost face gas collection tooling is filled in, plunger pair cylinder gas collection tooling is ring structure, and annular outer wall is equipped with the column with monomer pump plunger The interconnecting piece of face connection, control valve conical surface gas collection tooling includes conical surface gas collection tooling ontology and plug division, conical surface gas collection tooling sheet Body is rectangular configuration, and rectangular enclosure is equipped with the plug division connecting with the conical surface of control valve, and control valve cylinder gas collection tooling includes Cylinder gas collection tooling ontology and mounting portion, cylinder gas collection tooling ontology are rectangular configuration, installation and control valve in rectangular housing The mounting portion of cylinder connection.

5. a kind of monoblock pump sealing pair leakage test device according to claim 1, it is characterised in that: plunger position control Mechanism processed includes plunger connecting rod, screw rod, slide calliper rule and bracket, the plunger of the lower part installation monoblock pump of clamping device ontology, monomer The plunger other end of pump is connected to one end of plunger connecting rod, and the other end of plunger connecting rod is connected to bracket, installs on bracket Slide calliper rule, slide calliper rule are connected to screw rod, and screw rod is mounted on above plunger connecting rod.

6. a kind of monoblock pump sealing pair leakage test device according to claim 1, it is characterised in that: control valve compresses Mechanism includes precision lead screw, control system driving motor, turbine worm reducer and push rod, one end peace of turbine worm reducer Control system driving motor is filled, the other end is connected to push rod by precision lead screw, and force snesor is installed in the end of push rod, and push rod is used In the control valve for pushing monoblock pump, force snesor and the equal signal of control system driving motor are connected to the control of test control system Device.

7. a kind of monoblock pump sealing pair leakage test device according to claim 1, it is characterised in that: monomer pump seal It is TLD-GT high pressure shared-rail oil jetting pump universal test bench that pair, which reveals test bed test control system,.

8. a kind of monoblock pump sealing pair leakage test device according to claim 1, it is characterised in that: air pump is by storing After energy device and pressure maintaining valve, pass through the pressure duct that tracheae accesses monoblock pump.

Technical field

The invention belongs to dynamic power machine valve class flow rate test technical fields, leak more particularly, to a kind of monoblock pump sealing pair Measure test device.

Background technique

Monoblock pump makes fuel oil generate higher pressure by ram compression, control valve control the on-off of high low pressure oil circuit with Realize pressure control, therefore, the sealing performance of plunger and control valve is the important indicator of monomer pumpage.Control valve sealing Frustoconical bevel angle is slightly larger than control valve taper hole angle, realizes sealing in the form of line contact；Control valve cylinder, plunger cylinder pass through two A diameter difference only has several microns of cylinder to realize sealing.Two kinds of seal forms can all have micro leakage.In order to examine monoblock pump Whether can satisfy design requirement, needs to measure the sealing performance of the monomer pump control valve conical surface, control valve cylinder, plunger cylinder. However, currently without the experimental rig of special test unit pump control valve and plunger sealability.

Summary of the invention

In view of this, the present invention is directed to propose a kind of monoblock pump sealing pair leakage test device, to provide a kind of test High-efficient, test data is handled in real time, test result is easy to observe, special test unit pump control valve and plunger sealability Experimental rig.

In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:

A kind of monoblock pump sealing pair leakage test device, including air pump, solenoid valve, electronically controlled unit pump driver and gas Flow sensor, air pump pipeline are connected to monoblock pump, and monoblock pump ontology is mounted on inside monoblock pump clamping device, the control of monoblock pump Valve processed is externally attached to control valve hold-down mechanism, and the conical surface of control valve is connected to control valve conical surface gas collection tooling, the column of control valve Face is connected to control valve cylinder gas collection tooling, and the cylinder of monomer pump plunger is connected to plunger pair cylinder gas collection tooling, outside installation Plunger position control mechanism, control valve conical surface gas collection tooling, control valve cylinder gas collection tooling, plunger pair cylinder gas collection tooling are managed Road is connected to the front end inlet of solenoid valve, and gas flow sensor is installed in the side of solenoid valve, and electronically controlled unit pump is installed in the other side Driver, solenoid valve, gas flow sensor, electronically controlled unit pump driver and the equal signal of control valve hold-down mechanism are connected to test Control system.

Further, the controller of test control system is computer.

Further, air pump maximum stream flow is not less than 10L/min.

Further, monoblock pump clamping device includes clamping device ontology, control valve conical surface gas collection tooling, control valve cylinder Gas collection tooling and plunger pair cylinder gas collection tooling, clamping device ontology include integrated upper and lower part, and top is rectangular housing Structure, lower part are hollow cylinder structure, and control valve conical surface gas collection tooling is installed in the side on top, and control valve cylinder is installed in the other side Gas collection tooling, the external of lower part are socketed plunger pair cylinder gas collection tooling, and plunger pair cylinder gas collection tooling is ring structure, and annular is outer Wall is equipped with the interconnecting piece connecting with the cylinder of monomer pump plunger, and control valve conical surface gas collection tooling includes conical surface gas collection tooling ontology And plug division, conical surface gas collection tooling ontology are rectangular configuration, rectangular enclosure is equipped with the plug division connecting with the conical surface of control valve, Control valve cylinder gas collection tooling includes cylinder gas collection tooling ontology and mounting portion, and cylinder gas collection tooling ontology is rectangular configuration, square The mounting portion connecting with the cylinder of control valve is installed on shape shell.

Further, plunger position control mechanism includes plunger connecting rod, screw rod, slide calliper rule and bracket, clamping device ontology Lower part installation monoblock pump plunger, the plunger other end of monoblock pump is connected to one end of plunger connecting rod, plunger connecting rod The other end is connected to bracket, and slide calliper rule are installed on bracket, and slide calliper rule are connected to screw rod, and screw rod is mounted on above plunger connecting rod.

Further, control valve hold-down mechanism include precision lead screw, control system driving motor, turbine worm reducer and Push rod, one end installation control system driving motor of turbine worm reducer, the other end are connected to push rod by precision lead screw, push away Force snesor is installed in the end of bar, and push rod is used to push the control valve of monoblock pump, and force snesor and control system driving motor are equal Signal is connected to the controller of test control system.

Further, it is TLD-GT high-pressure common rail oil injection that monoblock pump sealing pair, which reveals test bed test control system, Pump universal test bench.

Further, air pump accesses the pressure duct of monoblock pump by tracheae after accumulator and pressure maintaining valve.

Compared with the existing technology, monoblock pump sealing pair leakage test device of the present invention has the advantage that

(1) monoblock pump sealing pair leakage test device of the present invention, can be to different control valve pressing forces and plunger The monoblock pump sealing pair leakage rate being put under depth is tested, and monoblock pump sealability is assessed.

(2) monoblock pump sealing pair leakage test device of the present invention, can be excellent from the angle of monoblock pump sealability Change the design of solenoid valve electromagnetic force and the research of plunger dynamic sealing, with testing efficiency is high, test data is handled in real time, test result is easy In observation the advantages that.

Detailed description of the invention

The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the systematic schematic diagram of monoblock pump sealing pair leakage test device described in the embodiment of the present invention；

Fig. 2 is control valve hold-down mechanism described in the embodiment of the present invention, plunger position control mechanism and monoblock pump clamping dress The schematic diagram of seated position relationship；

Fig. 3 is the signal of plunger position control mechanism and monoblock pump clamping device positional relationship described in the embodiment of the present invention Figure；

Fig. 4 is the schematic diagram of the positional relationship of control valve hold-down mechanism described in the embodiment of the present invention and monoblock pump.

Description of symbols:

1- air pump；2- monoblock pump；21- control valve；22- plunger；3- solenoid valve；4- test control system；The automatically controlled monomer of 5- Pump controller；6- control valve hold-down mechanism；61- precision lead screw；62- control system driving motor；63- turbine worm reducer； 64- push rod；7- plunger position control mechanism；71- plunger connecting rod；72- screw rod；73- slide calliper rule；74- bracket；8- gas flow passes Sensor；9- monoblock pump clamping device；91- clamping device ontology；The top 911-；The lower part 912-；92- control valve conical surface gas collection work Dress；93- control valve cylinder gas collection tooling；94- plunger pair cylinder gas collection tooling.

Specific embodiment

It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " It is meant that two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition Concrete meaning in the present invention.

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

A kind of monoblock pump sealing pair leakage test device, as shown in Figures 1 to 4, including it is air pump 1, solenoid valve 3, automatically controlled Monomer pump controller 5 and gas flow sensor 8,1 piping connection of air pump to monoblock pump 2,2 ontology of monoblock pump are mounted on monoblock pump Inside clamping device 9, the control valve 21 of monoblock pump 2 is externally attached to control valve hold-down mechanism 6, and the conical surface of control valve 21 is connected to Control valve conical surface gas collection tooling 92, the cylinder of control valve 21 are connected to control valve cylinder gas collection tooling 93, monomer pump plunger 22 Cylinder is connected to plunger pair cylinder gas collection tooling 94, outside installation plunger position control mechanism 7, control valve conical surface gas collection tooling 92, the entrance of control valve cylinder gas collection tooling 93, the equal piping connection of plunger pair cylinder gas collection tooling 94 to 3 front end of solenoid valve, electricity Gas flow sensor 8 is installed in the side of magnet valve 3, and electronically controlled unit pump driver 5 is installed in the other side, and solenoid valve 3, gas flow pass Sensor 8, electronically controlled unit pump driver 5 and the equal signal of control valve hold-down mechanism 6 are connected to test control system 4.

The controller of test control system 4 is computer.

Air pump 1 is that monoblock pump 2 provides gas source, and 1 maximum pressure of air pump can arrive 1.2MPa, and maximum stream flow is not less than 10L/ min.Compressed air must pass through dehydration, and after accumulator and pressure maintaining valve, pass through the high-voltage tube that tracheae accesses monoblock pump 2 Road.

Monoblock pump clamping device 9 includes clamping device ontology 9, control valve conical surface gas collection tooling 92, control valve cylinder gas collection Tooling 93 and plunger pair cylinder gas collection tooling 94, clamping device ontology 91 include the top 911 and lower part 912 of one, top 911 For rectangular case structure, lower part 912 is hollow cylinder structure, and control valve conical surface gas collection tooling 92 is installed in the side on top 911, separately Control valve cylinder gas collection tooling 93 is installed in side, and the external of lower part 912 is socketed plunger pair cylinder gas collection tooling 94, plunger pair cylinder Gas collection tooling 94 is ring structure, and annular outer wall is equipped with the interconnecting piece connecting with the cylinder of monomer pump plunger, the control valve conical surface Gas collection tooling 92 includes conical surface gas collection tooling ontology and plug division, and conical surface gas collection tooling ontology is rectangular configuration, in rectangular enclosure Equipped with the plug division that the conical surface with control valve is connect, control valve cylinder gas collection tooling 93 includes cylinder gas collection tooling ontology and installation Portion, cylinder gas collection tooling ontology are rectangular configuration, install the mounting portion connecting with the cylinder of control valve in rectangular housing.

Plunger position control mechanism 7 includes plunger connecting rod 71, screw rod 72, slide calliper rule 73 and bracket 74, clamping device ontology The plunger 22 of monoblock pump 2 is installed in 91 lower part 912, and 22 other end of plunger of monoblock pump 2 is connected to one end of plunger connecting rod 71, The other end of plunger connecting rod 71 is connected to bracket 74, installs slide calliper rule 73 on bracket 74, slide calliper rule 73 are connected to screw rod 72, screw rod 72 It is mounted on 71 top of plunger connecting rod, by adjusting the position of screw rod 72, controls the axial position of plunger 22, and pass through slide calliper rule 73 Show plunger displacement.

Control valve hold-down mechanism 6 includes precision lead screw 61, control system driving motor 62, turbine worm reducer 63 and pushes away Bar 64, one end installation control system driving motor 62 of turbine worm reducer 63, the other end are connected to by precision lead screw 61 Push rod 64, push rod 64 are used to push the control valve 21 of monoblock pump 2, and force snesor, force snesor and control are installed in the end of push rod 64 The equal signal of system drive motor 62 processed is connected to the controller of test control system 4.

The leakage in testing and control valve cone face needs for control valve 21 to be pressed on valve seat, because different pressing forces, lets out Leakage quantity is also not quite similar, so in order to assess the sealability under different pressing forces, testing stand needs to provide continuously adjustable pressure Clamp force.Pressing force is provided by precision lead screw 61 and turbine worm reducer 63,62 rotation of worm gear worm screw of control system driving motor Speed reducer 15 makes the push rod 64 equipped with force snesor push control valve 21 by precision lead screw 61, and force snesor is anti-by pressing force It feeds test control system 4, closed-loop control is carried out to control valve hold-down mechanism 6, it is automatic when pressing force reaches test setting value Stop.

Test control system 4 switches gas passage, and by three tested positions by the switching switch of control solenoid valve 3 The leakage air that place is collected each leads into gas flow sensor 8.

Electronically controlled unit pump driver 5, for receiving control system control signal, drive magnetic valve 3 is acted.

It is the general examination of TLD-GT high pressure shared-rail oil jetting pump that monoblock pump sealing pair, which reveals test bed test control system 4, Platform is tested, for the whole control of experimental bench and display and the record of test data.It has following function:

The setting and control of bleed pressure

The setting and closed-loop control of control valve pressing force

The setting and closed-loop control of plunger position

The setting and control of electromagnetism valve position

The drive control of electromagnetic coil

Flow meter data is read

The storage of test data

The data of record are corresponding according to corresponding working state recording by with the difference of control valve pressing force, plunger position Test data.

A kind of test process of monoblock pump sealing pair leakage test device are as follows:

The high-pressure oil passage of monoblock pump 2 is accessed into air pump 1, air pump 1 provides constant pressure gas source, respectively by the control valve conical surface, control Solenoid valve 3, program of the test control system 4 according to inner setting, control electricity are accessed in valve rod face, plunger pair cylinder leaked gas Magnet valve 3 switches, and three road gases are passed through flow sensor 8 respectively, measures three sealing pairs and leaks gas under dry, wet two kinds of operating conditions The flows per unit time of body.Bleed pressure: 5-12bar is continuously adjustable, gas source and flow amount: 10L/min, flow range: 0-10L/ Min, clamping device sealability: No leakage under 10MPa, solenoid valve sealability: No leakage under 10MPa, when electromagnetism response valve Between: 10ms.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.