CN204640007U - Flow-control valve assembly footpath envelope clearance measurement fixture - Google Patents
Flow-control valve assembly footpath envelope clearance measurement fixture Download PDFInfo
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- CN204640007U CN204640007U CN201520161650.4U CN201520161650U CN204640007U CN 204640007 U CN204640007 U CN 204640007U CN 201520161650 U CN201520161650 U CN 201520161650U CN 204640007 U CN204640007 U CN 204640007U
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- valve pocket
- control valve
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Abstract
The utility model provides a kind of flow-control valve assembly footpath envelope clearance measurement fixture, relates to field of fixtures.It comprises stepped cylindrical seat, and the axle center of stepped cylindrical seat has blind hole, is provided with spring in blind hole, and the upper ends of spring has stepped push rod, the inlet channel that cylinder is provided with outlet passageway and does not communicate with blind hole; Positioning body, be fixedly connected on the end face of cylinder, be placed with flow-control valve assembly, there is the first passage and container cavity that communicate with each other, first passage is communicated with inlet channel, container cavity vertical direction extend and with valve pocket matched in clearance, be provided with isolated sealing ring between valve pocket and container cavity, when valve pocket is stressed drop to the second predeterminated position time fuel feed hole be communicated with by container cavity with first passage; Nylon pressure head, is fixedly connected on cylinder, closes oil outlet and oppress valve pocket to decline when declining under air cylinder driven; Inlet duct, provides measurement gas; Flow monitoring meter, is arranged at outlet passageway mouth.This fixture is convenient and reliable, the parameter stability recorded.
Description
Technical field
The utility model relates to field of fixtures, particularly relates to flow-control valve assembly footpath envelope clearance measurement fixture.
Background technology
It is then very urgent that increase along with domestic automobile quantity solves the problem of environmental pollution that vehicle exhaust causes.So the utilization rate being improved fuel oil by all kinds of technological means makes fuel oil burn fully by we, thus reduce the discharge of carbon monoxide and hydride.This just makes diesel fuel injection system must obtain the raising of relevant technologies.Use for reference international internal combustion engine development advanced country, we need to start with from injection pump and fuel injector.Its oil pressure, the control of emitted dose and the atomizing effect after spraying.And need to reach fuel injector in such effect and just need to improve fuel oil fruit just needs control unit-valve module.
Valve module neck envelope measures checkout equipment, and existing fuel injector couple frock clamp cannot meet testing requirement, and fixture time customized is long, costly again.
Utility model content
An object of the present utility model a kind of new valve module neck will be provided to seal measure checkout equipment, so that accurately and measure the footpath envelope value of valve module simply.
Especially, the utility model provides a kind of flow-control valve assembly footpath envelope clearance measurement fixture, described flow-control valve assembly comprises valve pocket, valve rod, described valve rod is placed in described valve pocket, and and have fit clearance between described valve pocket, described valve pocket has fuel feed hole and oil outlet, described oil outlet is positioned at the large end face of described valve pocket, described fuel feed hole is positioned at the side of described valve pocket and communicates with described fit clearance, described flow-control valve assembly footpath envelope clearance measurement fixture comprises: stepped cylindrical seat, comprise cylinder, lower cylinder, spring, stepped push rod, the axle center of described stepped cylindrical seat has blind hole, described blind hole runs through cylinder under cylinder and a part, spring is provided with in described blind hole, the upper ends of described spring has stepped push rod, the inlet channel that described upper cylinder is provided with outlet passageway and does not communicate with described blind hole, when described stepped push rod is stressed sink to the first predeterminated position time, described blind hole communicates with described outlet passageway, positioning body, be fixedly connected on the end face of described upper cylinder, be placed with described flow-control valve assembly, make described large end face be parallel to horizontal plane and described valve rod perpendicular to described horizontal plane, the end of described valve rod is against the upper end of described stepped push rod, described positioning body has the first passage and container cavity that communicate with each other, described first passage is communicated with described inlet channel, described container cavity vertical direction extend and with described valve pocket matched in clearance, isolated sealing ring is provided with between described valve pocket and described container cavity, the upper cylinder described in described valve rod lower end abutment when described valve pocket is not stressed, when described valve pocket is stressed drop to the second predeterminated position time described fuel feed hole be communicated with by described container cavity with first passage, nylon pressure head, is fixedly connected on cylinder, closes described oil outlet and oppress described valve pocket to decline when declining under described air cylinder driven, inlet duct, provides measurement gas to described inlet channel, flow monitoring meter, is arranged at described outlet passageway mouth, is configured to detect the volume of the described measurement gas flow through to valve body bar gap from valve pocket in the unit interval.
Alternatively, described flow-control valve assembly footpath envelope clearance measurement fixture also comprises: lathe slide plate, be provided with the cavity holding described lower cylinder, described cavity coordinates with described lower cylindrical gap, described lathe slide plate is arranged on lathe movably, there is the primary importance under default conditions and the second place after receiving enabled instruction, when described lathe slide plate is positioned at the described second place, the lower surface of described nylon pressure head faces the large end face of described valve pocket, can press down described valve pocket and close described oil outlet when described nylon pressure head is declined.
Alternatively, described flow-control valve assembly footpath envelope clearance measurement fixture also comprises: pressure head body, is fixedly connected with described pressure head; Rebound, is fixedly connected with described pressure head body, and is fixedly connected on described cylinder.
Alternatively, whether described flow-control valve assembly footpath envelope clearance measurement fixture also comprises: level sensor under cylinder, detect cylinder and decline, when cylinder declines, send dropping signal; Controller, receives described dropping signal, sends air feed instruction to described inlet duct, provides described measurement gas to make described inlet duct.
Alternatively, described measurement gas is nitrogen.
Alternatively, described upper cylinder has four screwed holes, and four bolts that described upper cylinder and described positioning body are through described four screwed holes are fixedly connected with; Described four screwed holes are uniformly distributed in the first annular of described upper cylinder end face.
Alternatively, described upper cylindrical tip has cannelure in first, described positioning body bottom have position corresponding second in cannelure; Described upper cylindrical tip has the first outer annular groove, and described positioning body bottom has the second outer annular groove corresponding to position; Inner seal ring is provided with in cannelure in cannelure and in described second in described first; Exterior seal ring is provided with in described first outer annular groove and in described second outer annular groove; The intersection of described inlet channel and described first passage is closed by described inner seal ring and described exterior seal ring.
Alternatively, described four screwed holes are positioned at the outside of described first cannelure and described first outer annular groove.
Alternatively, described pressure head body and described pressure head are threaded connection and are fixed.
Flow-control valve assembly footpath of the present utility model envelope clearance measurement fixture communicates due to the first passage of inlet channel and positioning body and container cavity, when described stepped push rod is stressed sink to the first predeterminated position time, described blind hole communicates with described outlet passageway, when described valve pocket is stressed drop to the second predeterminated position time described fuel feed hole be communicated with by described container cavity with first passage, and itself there is between valve pocket and valve rod gap, therefore the measurement gas flowed into from inlet channel flows out to outlet passageway by the gap between valve pocket and valve body, in the related data of outlet passageway place measurement gas, the envelope gap, footpath of flow-control valve assembly can be obtained.This fixture is a kind of new structure, simple installation, be easy to dismounting and simple to operate, clamping workpiece is convenient and reliable, gap measurement require technological parameter stablize.
Further, flow-control valve assembly footpath of the present utility model envelope clearance measurement fixture is installed on cylindrical seat because positioning body removably (passes through screw), therefore positioning body be can change according to the difference of valve module total length, thus the valve pocket of existing all valve modules and the fit clearance Detection task of valve rod realized.Achieve the facility of processing.
According to hereafter by reference to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present utility model more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present utility model with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the assembling schematic diagram of the flow-control valve assembly footpath envelope clearance measurement fixture according to the utility model embodiment;
Fig. 2 is the partial enlarged drawing of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Fig. 3 is the structural representation of flow-control valve assembly embodiment illustrated in fig. 1;
Fig. 4 is the base schematic diagram of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Fig. 5 be the base of flow-control valve assembly footpath embodiment illustrated in fig. 1 envelope clearance measurement fixture A-A to profile;
Fig. 6 be the base of flow-control valve assembly footpath embodiment illustrated in fig. 1 envelope clearance measurement fixture B-B to profile;
Fig. 7 is the push rod schematic diagram of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Fig. 8 is the pressure head schematic diagram of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Fig. 9 is the pressure head body schematic diagram of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Figure 10 is the assembling schematic diagram of the pressure head body of flow-control valve assembly footpath embodiment illustrated in fig. 1 envelope clearance measurement fixture, pressure head and cylinder connector;
Figure 11 is the profile of the positioning body of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Figure 12 is the partial enlarged drawing of the positioning body of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Figure 13 is the top view of the positioning body of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1;
Figure 14 is the positioning body of flow-control valve assembly footpath envelope clearance measurement fixture embodiment illustrated in fig. 1 and the assembling schematic diagram of base.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of the flow-control valve assembly footpath envelope clearance measurement fixture according to the utility model embodiment.As shown in Figure 1, the utility model discloses a kind of flow-control valve assembly footpath envelope clearance measurement fixture, flow-control valve assembly (see Fig. 3) comprises valve pocket 22, valve rod 23, valve rod 23 is placed in valve pocket 22, and and have fit clearance between valve pocket 22, valve pocket 22 has fuel feed hole 6 and oil outlet 5, and oil outlet 5 is positioned at the large end face 21 of valve pocket 22, and fuel feed hole 6 is positioned at the side of valve pocket 22 and communicates with fit clearance.Flow-control valve assembly footpath envelope clearance measurement fixture shown in Fig. 1 at least can comprise stepped cylindrical seat 11, positioning body 7, nylon pressure head 4, inlet duct, flow monitoring meter.
Stepped cylindrical seat 11, comprise cylinder, lower cylinder, spring 10, stepped push rod 9, the axle center of stepped cylindrical seat 11 has blind hole, blind hole runs through cylinder (under such as half cylinder) under cylinder and a part, be provided with spring 10 in blind hole, the upper ends of spring 10 has stepped push rod 9; The inlet channel that upper cylinder is provided with outlet passageway and does not communicate with blind hole; When stepped push rod 9 is stressed sink to the first predeterminated position time, blind hole communicates with outlet passageway (can be the part of being unkitted described stepped push rod 9 and described spring 10).When described stepped push rod 9 is in default conditions (after referring to not receive and oppressing valve module from nylon pressure head 4, under the state of valve module oppressor class shape push rod 9 today), described blind hole and described outlet passageway can be intercepted by described stepped push rod 9.
Positioning body 7, be fixedly connected on the end face of cylinder, be placed with flow-control valve assembly, make large end face 21 be parallel to horizontal plane and valve rod 23 perpendicular to horizontal plane, the end of valve rod 23 is against the upper end of stepped push rod 9, positioning body 7 has the first passage and container cavity that communicate with each other, first passage is communicated with inlet channel, container cavity vertical direction extend and with valve pocket 22 matched in clearance, isolated sealing ring 13 is provided with between valve pocket 22 and container cavity, the cylinder in valve rod 23 lower end abutment when valve pocket 22 is not stressed, when valve pocket 22 is stressed drop to the second predeterminated position time fuel feed hole 6 be communicated with by container cavity with first passage.As seen from Figure 1, in the vertical direction, sees from top to bottom, and the superposed Part II of container cavity and the Part I being positioned at bottom intercept by isolated sealing ring 13.Valve pocket 22 has gap with the Part I of container cavity, and Part I is communicated with first passage.In Part II, can extend along it by some valve pocket 22, this part valve pocket 22 still has gap with Part II, but the most place that valve pocket 22 extends, have the valve rod 23 extended in valve pocket 22, valve rod 23 and container cavity have larger gap.Isolated sealing ring 13 ensures that gas that first passage enters directly can not enter the container cavity of Part II from Part I, but does not hinder valve pocket 22 moving down when stressed.This gas enters first passage from inlet channel, after entering the container cavity of Part I, enters valve pocket 22 by oil-in, and enters the container cavity of Part II from valve pocket 22, and enter blind hole, finally flow out from outlet passageway.
Nylon pressure head 4, is fixedly connected on cylinder, closes oil outlet 5 and oppress valve pocket 22 to decline when declining under air cylinder driven.
Inlet duct provides measurement gas (such as nitrogen) to inlet channel; Flow monitoring meter is arranged at outlet passageway mouth, is configured to detect the volume of the measurement gas flow through to valve body bar gap from valve pocket 22 in the unit interval.It also can survey other physical quantity, is recorded the volume of the measurement gas flow through to valve body bar gap from valve pocket 22 in the unit interval by computer.
As shown in Figure 1, this flow-control valve assembly footpath envelope clearance measurement fixture also can comprise lathe slide plate 12, which is provided with the cavity holding lower cylinder, cavity coordinates with lower cylindrical gap, lathe slide plate 12 is arranged on lathe movably, there is the primary importance 100 under default conditions and the second place 200 after receiving enabled instruction, when lathe slide plate 12 is positioned at the second place, the lower surface of nylon pressure head 4 faces the large end face 21 of valve pocket 22, can press down valve pocket 22 and close oil outlet 5 when nylon pressure head 4 is declined.Default conditions refer to that flow-control valve assembly footpath envelope clearance measurement fixture is installed in lathe slide plate 12, when being not yet activated.After starting switch is pressed, send enabling signal, controller receives enabling signal, sends enabled instruction to lathe slide plate 12.
As shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, Figure 11, Figure 12, Figure 13, Figure 14, in an embodiment of the present utility model, upper cylinder can have four screwed holes, and four bolts that upper cylinder and positioning body 7 are through four screwed holes are fixedly connected with; Four screwed holes are uniformly distributed in the first annular of cylinder end face.In addition, upper cylindrical tip can have cannelure in first, positioning body 7 bottom can have position corresponding second in cannelure; Upper cylindrical tip has the first outer annular groove, and positioning body 7 bottom has the second outer annular groove corresponding to position; Inner seal ring 15 is provided with in cannelure in cannelure and in second in first; Exterior seal ring 14 is provided with in first outer annular groove and in the second outer annular groove; The intersection of inlet channel and first passage is closed by inner seal ring 15 and exterior seal ring 14.Preferably, four screwed holes are positioned at the outside of the first cannelure and the first outer annular groove.
As Figure 8-Figure 10, pressure head is fixedly connected on pressure head body 3 (being such as threaded connection), and pressure head body 3 is connected to cylinder by other jockeys, such as, respectively at the rebound 2 that pressure head body 3 is fixedly connected with cylinder.
In other embodiments of the present utility model, this flow-control valve assembly footpath envelope clearance measurement fixture also can comprise level sensor and controller under cylinder.Whether cylinder 1 time level sensor, detect cylinder 1 and decline, when cylinder 1 declines, send dropping signal; Controller, receives dropping signal, sends air feed instruction, provide measurement gas to make inlet duct to inlet duct.
Below the partial data of each assembly of an embodiment of the present utility model is described, so that scheme of the present utility model to be described better.It is to be appreciated that it is only an exemplary example, these data not limit forecast scheme configuration of the present utility model, if following data are without explanation, unit can be millimeter.Stepped cylindrical seat 11 is by diameter
with diameter
secondary axle dimerous.Stepped cylindrical seat
outer circumference surface and lathe slide plate 12 on cavity form matched in clearance free to rotate.There is diameter at the axle center of stepped cylindrical seat 11
the blind hole of dark 45, spring 10 is placed directly in blind hole.The upper end of spring 10 is put into by diameter
and diameter
stepped push rod 9 dimerous.The screwed hole of 4 M5 uniform on stepped cylindrical seat 11 omoplate uses bolt and the diameter of M5X42
diameter
the two-stage circle positioning body 7 that two parts are formed connects.At both contact surface places, in stepped cylindrical seat
and
cannelure in use O RunddichtringO 34.5 × 1.8 and O RunddichtringO 13.2 × 1.8, for sealing the junction of inlet channel between the two and first passage.Positioning body 7 top
groove in put into 7.5 × 1.8 O-ring seals.Pressure head body 3 is by diameter
the cylinder composition of long 70.Pressure head body 3 and pressure head are threaded connection and are fixed together.Pressure head body 3 and cylinder are linked together by the connector on cylinder, then are fixed on cylinder through fixed cover.
Below in conjunction with Fig. 1-Figure 14, explain the operation principle of flow-control valve assembly footpath of the present utility model envelope clearance measurement fixture.After positioning body 7 installs valve module, press lathe start key, the sledge displacement inductor 8 lathe is triggered when lathe slide plate 12 moves to No. 2 positions from No. 1 position, after controller receives the instruction that sledge displacement inductor 8 sends, make cylinder descending, drive the nylon pressure head 4 descending large end face 21 pushing down valve pocket 22, thus compressing valve rod 23 with compress inner seal ring 15 and exterior seal ring 14 with positioning body 7 end contact, thus be close to sealing with positioning body 7 end face.Nylon block seals up the oil outlet 5 of valve pocket 22 large end face 21 simultaneously.When cylinder is descending, now the next inductor of cylinder sends signal, controller controls inlet duct and provides nitrogen to inlet channel, nitrogen is entered by the entrance (being left side pore in Fig. 1) of admission line, gas flow through path as Fig. 1, shown in the arrow of 2, by the part of the container cavity on first passage and isolated sealing ring 13, be passed to the fuel feed hole 6 of valve pocket 22, valve pocket 22 is entered by fuel feed hole 6, through the fit clearance of valve pocket 22 with valve rod 23, enter the blind hole of stepped cylindrical seat 11, discharge from the outlet (Fig. 1 right side pore) of outlet passageway, through detection of gas flow rate meter in outlet passageway mouth or its, calculated in the unit interval from the nitrogen volume flow through between valve pocket 22 and valve rod 23 gap by Computer.And this measured bulking value is exactly required footpath envelope value.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present utility model is illustrate and described herein detailed, but, when not departing from the utility model spirit and scope, still can directly determine or derive other modification many or amendment of meeting the utility model principle according to content disclosed in the utility model.Therefore, scope of the present utility model should be understood and regard as and cover all these other modification or amendments.
Claims (9)
1. flow-control valve assembly footpath envelope clearance measurement fixture, described flow-control valve assembly comprises valve pocket, valve rod, described valve rod is placed in described valve pocket, and and have fit clearance between described valve pocket, described valve pocket has fuel feed hole and oil outlet, and described oil outlet is positioned at the large end face of described valve pocket, and described fuel feed hole is positioned at the side of described valve pocket and communicates with described fit clearance, it is characterized in that, described flow-control valve assembly footpath envelope clearance measurement fixture comprises:
Stepped cylindrical seat, comprise cylinder, lower cylinder, spring, stepped push rod, the axle center of described stepped cylindrical seat has blind hole, described blind hole runs through cylinder under cylinder and a part, spring is provided with in described blind hole, the upper ends of described spring has stepped push rod, the inlet channel that described upper cylinder is provided with outlet passageway and does not communicate with described blind hole; When described stepped push rod is stressed sink to the first predeterminated position time, described blind hole communicates with described outlet passageway;
Positioning body, be fixedly connected on the end face of described upper cylinder, be placed with described flow-control valve assembly, make described large end face be parallel to horizontal plane and described valve rod perpendicular to described horizontal plane, the end of described valve rod is against the upper end of described stepped push rod, described positioning body has the first passage and container cavity that communicate with each other, described first passage is communicated with described inlet channel, described container cavity vertical direction extend and with described valve pocket matched in clearance, isolated sealing ring is provided with between described valve pocket and described container cavity, the upper cylinder described in described valve rod lower end abutment when described valve pocket is not stressed, when described valve pocket is stressed drop to the second predeterminated position time described fuel feed hole be communicated with by described container cavity with first passage,
Nylon pressure head, is fixedly connected on cylinder, closes described oil outlet and oppress described valve pocket to decline when declining under described air cylinder driven;
Inlet duct, provides measurement gas to described inlet channel;
Flow monitoring meter, is arranged at described outlet passageway mouth, is configured to detect the volume of the described measurement gas flow through to valve body bar gap from valve pocket in the unit interval.
2. flow-control valve assembly footpath as claimed in claim 1 envelope clearance measurement fixture, is characterized in that, also comprise:
Lathe slide plate, be provided with the cavity holding described lower cylinder, described cavity coordinates with described lower cylindrical gap, described lathe slide plate is arranged on lathe movably, there is the primary importance under default conditions and the second place after receiving enabled instruction, when described lathe slide plate is positioned at the described second place, the lower surface of described nylon pressure head faces the large end face of described valve pocket, can press down described valve pocket and close described oil outlet when described nylon pressure head is declined.
3. flow-control valve assembly footpath as claimed in claim 2 envelope clearance measurement fixture, is characterized in that, also comprise:
Pressure head body, is fixedly connected with described pressure head;
Rebound, is fixedly connected with described pressure head body, and is fixedly connected on described cylinder.
4. flow-control valve assembly footpath as claimed in claim 3 envelope clearance measurement fixture, is characterized in that, also comprise:
Whether level sensor under cylinder, detect cylinder and decline, when cylinder declines, send dropping signal;
Controller, receives described dropping signal, sends air feed instruction to described inlet duct, provides described measurement gas to make described inlet duct.
5. flow-control valve assembly footpath as claimed in claim 1 envelope clearance measurement fixture, is characterized in that,
Described measurement gas is nitrogen.
6. flow-control valve assembly footpath as claimed in claim 1 envelope clearance measurement fixture, is characterized in that,
Described upper cylinder has four screwed holes, and four bolts that described upper cylinder and described positioning body are through described four screwed holes are fixedly connected with;
Described four screwed holes are uniformly distributed in the first annular of described upper cylinder end face.
7. flow-control valve assembly footpath as claimed in claim 6 envelope clearance measurement fixture, is characterized in that,
Described upper cylindrical tip has cannelure in first, described positioning body bottom have position corresponding second in cannelure;
Described upper cylindrical tip has the first outer annular groove, and described positioning body bottom has the second outer annular groove corresponding to position;
Inner seal ring is provided with in cannelure in cannelure and in described second in described first;
Exterior seal ring is provided with in described first outer annular groove and in described second outer annular groove;
The intersection of described inlet channel and described first passage is closed by described inner seal ring and described exterior seal ring.
8. flow-control valve assembly footpath as claimed in claim 7 envelope clearance measurement fixture, is characterized in that,
Described four screwed holes are positioned at the outside of described first cannelure and described first outer annular groove.
9. flow-control valve assembly footpath as claimed in claim 3 envelope clearance measurement fixture, is characterized in that,
Described pressure head body and described pressure head are threaded connection and are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161650.4U CN204640007U (en) | 2015-03-20 | 2015-03-20 | Flow-control valve assembly footpath envelope clearance measurement fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161650.4U CN204640007U (en) | 2015-03-20 | 2015-03-20 | Flow-control valve assembly footpath envelope clearance measurement fixture |
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| Publication Number | Publication Date |
|---|---|
| CN204640007U true CN204640007U (en) | 2015-09-16 |
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ID=54092788
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|---|---|---|---|
| CN201520161650.4U Expired - Fee Related CN204640007U (en) | 2015-03-20 | 2015-03-20 | Flow-control valve assembly footpath envelope clearance measurement fixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683206A (en) * | 2020-12-24 | 2021-04-20 | 中核苏阀科技实业股份有限公司 | Low-temperature ball valve seat inner leakage gap measuring device and method |
| CN113339345A (en) * | 2021-06-16 | 2021-09-03 | 江苏瑞普机床有限公司 | Hydraulic valve assembly detection system |
-
2015
- 2015-03-20 CN CN201520161650.4U patent/CN204640007U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683206A (en) * | 2020-12-24 | 2021-04-20 | 中核苏阀科技实业股份有限公司 | Low-temperature ball valve seat inner leakage gap measuring device and method |
| CN113339345A (en) * | 2021-06-16 | 2021-09-03 | 江苏瑞普机床有限公司 | Hydraulic valve assembly detection system |
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| GR01 | Patent grant | ||
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Granted publication date: 20150916 Termination date: 20200320 |
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| CF01 | Termination of patent right due to non-payment of annual fee |