CN2063178U - Hydraulically pressurizing tester - Google Patents
Hydraulically pressurizing tester Download PDFInfo
- Publication number
- CN2063178U CN2063178U CN 90200636 CN90200636U CN2063178U CN 2063178 U CN2063178 U CN 2063178U CN 90200636 CN90200636 CN 90200636 CN 90200636 U CN90200636 U CN 90200636U CN 2063178 U CN2063178 U CN 2063178U
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- valve
- pressure
- hydraulic
- testing apparatus
- pressure meter
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Abstract
The utility model relates to a hydraulically pressurizing tester, comprising an ordinary operating valve, a check valve, a break valve, a high pressure meter, a low pressure meter and a connecting conduit. The piston rods are connected oppositely by two hydraulic cylinders with different diameters, and the cylinder body is connected with the same fixing rack, and a pressurizing device is formed. The display section is provided with a safe sequence valve of the pressure meter, and the pressure value of the testing system can be respectively displayed on the high and the low pressure meter automatically without hand control, so the testing precision is high. Not only the processing and the maintaining difficulties of the special parts are avoided, because the standard hydraulic element is adopted, and the hydraulically pressurizing tester has the advantages of wide material source, low price and good performance, which provides convenient conditions for carrying out the on-scene hydraulic detecting work.
Description
The utility model relates to a kind of hydraulic booster testing apparatus, is particularly useful for high and low pressure sealing, action, the test of intensity and the maintenance test of colliery hydraulic prop and triple-use valve of various oil hydraulic cylinders.
In China, when carrying out the detection test of various oil hydraulic cylinders and valve in the particularly present coal mine machinery manufacturing, the ZC-2 type hydraulic booster test stand that uses Changzhou to produce usually.The pressure-display system of this test stand is made up of high and low pressure table and some hydrovalves, in use need to switch high and low, pressure table by hand by operator according to usage requirement, so complex operation, easy break-down, and because of above-mentioned test stand is made up of a large amount of non-standard component, therefore interchangeability is poor, so to using and maintenance is made troubles.
The purpose of this utility model be to provide a kind of pressure that has institute's test system can show its high and low pressure value automatically respectively and adopt that common common standard hydraulic pressure elements combination forms, simple in structure, easy to use and hydraulic booster testing apparatus that testing precision is high.
The purpose of this utility model realizes by following measure: this hydraulic booster testing apparatus comprises common control valve, one-way valve, stop valve, high, low-pressure meter and connecting duct, the piston rod of the oil hydraulic cylinder that two diameters are not waited docks mutually, and its cylinder body is linked to each other respectively with same fixing frame, thereby composition supercharging device, a pressure gauge safety sequence valve is set before the low-pressure meter in the display unit of the utility model hydraulic booster testing apparatus, uses the height in the hydraulic system that institute's testing apparatus and the utility model testing apparatus are formed, the low pressure test (LPT) force value automatically adopts height, two pressure gauges of low pressure show respectively.
The utlity model has following advantage: owing to adopted common standard hydraulic pressure elements combination to form, the high-precision processing of parts peculiar and the inconvenience of bringing to the maintenance after the fault have not only been avoided, and make carrying out of on-the-spot hydraulic pressure testing be convenient to realize, simultaneously, wide material sources because of the standard hydraulic element, cheap, performance is also reliable, all provides advantage so it is used and keep in repair.In addition, owing in pressure-display part, adopted pressure gauge safety sequence valve, can need not hand-guided and promptly respectively the high and low pressure value of institute's examining system is presented on the high and low pressure table automatically, its testing precision height, and convenient, reliable.
Description of drawings of the present utility model is as follows:
Fig. 1 is the hydraulic schematic diagram of this testing apparatus;
Fig. 2 is the pressure gauge safety sequence valve structural representation in this testing apparatus;
The working principle of the utility model hydraulic booster testing apparatus as shown in Figure 1, when three-position four-way valve 4 places diagram during left valve position, pressure liquid is to piston cavity and each delivery outlet topping up of minor diameter oil cylinder 1, each delivery outlet can be selected according to each stop valve 5 that is disposed; When three-position four-way valve 4 places the right valve position of diagram, pressure liquid enters the piston cavity of major diameter low pressure oil cylinder 2, be the delivery outlet supercharging by the piston rod interface cylinder body by two different diameter oil cylinders with the supercharging device that forms that links to each other with fixing frame 3 promptly, the size of supercharging value is determined by the supercharging number of times.Finish in the high pressure unloading loop that low pressure relief circuit that the unloading of the hydraulic system that the utility model hydraulic booster testing apparatus and tested hydraulic element are formed is made up of three-position four-way valve 7, Pilot operated check valve 6 or two position two-way valve 8 and safety valve 9 are formed.When system pressure is a low pressure, during promptly with low-pressure meter 10 display system pressure, the pressure liquid in the system can be flow back to fuel tank with three-position four-way valve 7 and by Pilot operated check valve 6; And pressure is higher in system, during promptly with high pressure gauge 11 display system pressure, the high pressure unloading loop of then should be earlier forming with two position two-way valve 8 and safety valve 9 is to system's release, treat that pressure reduces after, the mode with the low pressure unloading flows back to fuel tank with the low pressure liquid in the system again.
The force value of the hydraulic system that the utility model hydraulic booster testing apparatus and tested hydraulic element are formed, the pressure-display of being made up of low-pressure meter 10 and high pressure gauge 11 and pressure gauge safety sequence valve 12 partly shows.When system pressure is lower than pressure gauge safety sequence valve 12 preset action pressure, show its system pressure by low-pressure meter 10; When system pressure was higher than the pressure that pressure gauge safety sequence valve 12 sets, the action of pressure gauge safety sequence valve automatically will be towards the path blockade of low-pressure meter 10, by the pressure in high pressure gauge 11 display systems.The setting operating pressure of pressure gauge safety sequence valve 12 can be selected according to the range of selected low-pressure meter 10 and high pressure gauge 11.The structural representation of this valve is seen Fig. 2, and one-way sealing device 14 is set in valve body 13, the liquid entering hole of the logical pressure gauge safety sequence valve of a side of sealing, and its check side communicates with the liquid outlet of pressure gauge safety sequence valve, and is provided with a piston 15 in this side.The piston cavity that is formed by piston 15 and valve body 13 communicates with the liquid entering hole of valve simultaneously.Be provided with a push rod 16 with piston 15 corresponding one-way sealing device opposite sides, spring 17 be housed in the back of this push rod.The power that acts on the piston 15 as system pressure P satisfies ［ P * S
1〉=P * S
2+ F ］ time, low-pressure meter is closed automatically, shows its force value by high pressure gauge; As satisfied ［ P * S
1＜P * S
2+ F ］ time, low-pressure meter is opened the demonstration force value automatically.S in the formula
1Be the piston action area; S
2Be sealing area; F is a spring force.In addition, the one-way sealing device in this valve can be spherical sealing, cone seal or plane sealing.Connecting duct also can use flexible sebific duct.
The utility model hydraulic booster experimental rig adopts common standard hydraulic pressure elements combination to form just because of more, so have the characteristics that on-the-spot signal detecting work is carried out of being convenient to; Simultaneously also owing in the pressure display part, adopted the safe sequence valve of Pressure gauge, can realize need not manual control and automatically the high and low pressure value of institute's examining system is shown at the high and low pressure table respectively, so its measuring accuracy height, and convenient, reliable.
Claims (5)
1, a kind of hydraulic booster testing apparatus comprises control valve, supercharging device, one-way valve, connecting duct, stop valve and high and low pressure table, it is characterized in that being provided with a pressure gauge safety sequence valve before the low-pressure meter.
2, hydraulic testing apparatus as claimed in claim 1, it is characterized in that in the valve body of said pressure gauge safety sequence valve the one-way sealing device being set, the liquid entering hole of the logical pressure gauge safety sequence valve of one side of sealing, its check side communicates with the liquid outlet of pressure gauge safety sequence valve, and be provided with piston in liquid outlet one side, opposite side by the corresponding one-way sealing device of piston is provided with push rod, and spring is equipped with in the back of push rod.
3, hydraulic testing apparatus as claimed in claim 2 is characterized in that the one-way sealing device can be spherical sealing, cone seal or plane sealing.
4, hydraulic testing apparatus as claimed in claim 1 is characterized in that said supercharging device is made up of the oil cylinder of the relative different-diameter that connects of two piston rods, and two cylinder bodies are connected with same fixing frame respectively.
5, hydraulic testing apparatus as claimed in claim 1 is characterized in that connecting duct is flexible sebific duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200636 CN2063178U (en) | 1990-01-20 | 1990-01-20 | Hydraulically pressurizing tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200636 CN2063178U (en) | 1990-01-20 | 1990-01-20 | Hydraulically pressurizing tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2063178U true CN2063178U (en) | 1990-10-03 |
Family
ID=4882394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90200636 Withdrawn CN2063178U (en) | 1990-01-20 | 1990-01-20 | Hydraulically pressurizing tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2063178U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384817A (en) * | 2011-11-29 | 2012-03-21 | 上海汇益控制系统股份有限公司 | Batch detecting system for hydraulic measuring devices |
| CN110905887A (en) * | 2019-10-30 | 2020-03-24 | 润琛液压机械南通有限公司 | High-voltage and ultrahigh-voltage combined test board |
-
1990
- 1990-01-20 CN CN 90200636 patent/CN2063178U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384817A (en) * | 2011-11-29 | 2012-03-21 | 上海汇益控制系统股份有限公司 | Batch detecting system for hydraulic measuring devices |
| CN102384817B (en) * | 2011-11-29 | 2015-09-09 | 上海汇益控制系统股份有限公司 | A kind of batch inspection system of hydraulic measurement instrument |
| CN110905887A (en) * | 2019-10-30 | 2020-03-24 | 润琛液压机械南通有限公司 | High-voltage and ultrahigh-voltage combined test board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |