CN201110806Y - Pressure switch durability testing stand - Google Patents
Pressure switch durability testing stand Download PDFInfo
- Publication number
- CN201110806Y CN201110806Y CNU2007201707320U CN200720170732U CN201110806Y CN 201110806 Y CN201110806 Y CN 201110806Y CN U2007201707320 U CNU2007201707320 U CN U2007201707320U CN 200720170732 U CN200720170732 U CN 200720170732U CN 201110806 Y CN201110806 Y CN 201110806Y
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- Prior art keywords
- pressure
- pressure switch
- valve
- oil duct
- tested
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- Expired - Lifetime
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Abstract
The utility model discloses a pressure switch endurance testing stand, which comprises a pressure source supplying pressure for pressure switches to be tested and is characterized in that the pressure source is a hydraulic unit, a joint and an oil duct block are arranged in an oil duct between the hydraulic unit and a pressure switch to be tested, the joint is disposed an oil duct between the pressure switch to be tested and the oil duct block, the oil duct block is mounted in an oil duct between the joint and the hydraulic unit, the pressure switch to be tested is installed on the joint, further the oil duct includes overflow valves and a directional control valve. Compared with the prior arts, the pressure switch endurance testing stand has the advantages that the pressure source uses the hydraulic unit to directly supply pressure for pressure switches to be tested, on the one hand, the characteristic that the hydraulic unit is adapted for both high pressure and low pressure is utilized, on the other hand, the pressure value is very stable, and tested experimental data are more reliable. Two overflow valves and a three position four-way directional control valve can meet pressure parameter requirements of different experimental sections, and a one-way throttle cut-off valve is utilized to stabilize oil duct pressure, thereby avoiding pressure overshooting.
Description
Technical field
The utility model relates to long duration test, especially relates to a kind of pressure switch durable test stand.
Background technology
The existing pneumatic supply that is used for the durable test stand of detected pressures switch pressure alternation is the air bag that Hydraulic Station drives, and provides pressure by it to detected pressure switch.Because the compressibility of gas is stronger, the pressure stability that offers detected pressure switch is relatively poor, and the gas of the interior palpus of air bag preliminary filling certain pressure, is difficult to satisfy the pressure parameter requirement of low pressure values experimental section.
Summary of the invention
Technical problem to be solved in the utility model is the defective that remedies above-mentioned prior art, proposes a kind of pressure switch durable test stand.
Technical matters of the present utility model is solved by the following technical programs.
This pressure switch durable test stand comprises the pressure source that pressure is provided to detected pressure switch.
The characteristics of this pressure switch durable test stand are:
Described pressure source is a Hydraulic Station;
Be provided with adapter, oil path block in the oil circuit between Hydraulic Station and detected pressure switch, described adapter is arranged in the oil circuit between detected pressure switch and the oil path block, described oil path block is arranged in the oil circuit between adapter and the Hydraulic Station, and detected pressure switch is installed on the described adapter.
Also be provided with surplus valve and reversal valve in the described oil circuit, to satisfy the pressure parameter requirement of different experiments section.
Technical matters of the present utility model is solved by following further technical scheme.
Described oil path block is provided with vent valve, is used at the front-seat gas that removes in the oil circuit of on-test, to stablize the pressure of oil circuit.
Also be provided with safty shield, prevent that detected pressure switch 3 from making it connect the accident gone out by high pressure of taking place of becoming flexible because self structure is tired in long-time long duration test process.
Also be provided with the one-way throttle stop valve in the described oil circuit.During high pressure, the one-way throttle stop valve plays the throttling pressure stabilization function, regulates flow by the circulation area that changes its restriction, to eliminate the pressure overshoot phenomenon takes place when reversal valve switches fast; During oil return, the one-way throttle stop valve plays the retaining valve effect.
Described surplus valve comprises high-pressure overflow valve and low pressure relief valve.
Described reversal valve is a three position four-way directional control valve.
The beneficial effect that the utility model is compared with the prior art is:
Pressure source adopts Hydraulic Station pressure to be provided directly for detected pressure switch, can utilize all suitable characteristic of its high-low pressure on the one hand, and force value is highly stable on the other hand, makes the experimental data that records more true and reliable.Adopt two surplus valves and a three position four-way directional control valve, can satisfy the pressure parameter requirement of different experiments section.Also adopt the one-way throttle stop valve to stablize oil circuit pressure, avoided occurring the pressure overshoot problem.
Description of drawings
Fig. 1 is the composition structural representation of the utility model embodiment;
Fig. 2 is the detected pressure switch scheme of installation of the utility model embodiment;
Fig. 3 is the side view of Fig. 1;
Fig. 4 is the oil circuit synoptic diagram of the utility model embodiment.
Embodiment
Contrast accompanying drawing and the utility model is further described below in conjunction with embodiment.
The durable test stand of the detection automobile-use pressure switch pressure alternation shown in Fig. 1～4 comprises control enclosure 1, worktable 4, also comprises the Hydraulic Station 9 as pressure source.Control enclosure 1 places on the table top of worktable 4, is connected with worktable 4 by control enclosure support 17, and its setting height(from bottom) is convenient to observe indicating instrument and the pilot lamp on control enclosure 1 panel, and one-piece construction is comparatively compact, and easy to operate.
Also be provided with high-pressure overflow valve 15, low pressure relief valve 14 and three position four-way directional control valve 13 in the oil circuit, to satisfy the pressure parameter requirement of different experiments section.
Test 0MPa～1.00MPa pressure stage, the oil pressure relief value of setting high-pressure overflow valve 15 is 1.00MPa, low pressure relief valve 14 lost efficacy, and flowed to by the oil return of three position four-way directional control valve 13 spools action control hydraulic oil, to satisfy the experimental pressure requirement.
Test 0.36MPa～1.96MPa pressure stage, the oil pressure relief value of setting high-pressure overflow valve 15 is 1.96MPa, the oil pressure relief value of low pressure relief valve 14 is 0.36MPa, flows to by the oil return of three position four-way directional control valve 13 spools action control hydraulic oil, to satisfy the experimental pressure requirement.
Test 0.98MPa～3.50MPa pressure stage, the oil pressure relief value of setting high-pressure overflow valve 15 is 3.50MPa, the oil pressure relief value of low pressure relief valve 14 is 0.98MPa, flows to by the oil return of three position four-way directional control valve 13 spools action control hydraulic oil, to satisfy the experimental pressure requirement.
Also be provided with vent valve 10 on the oil path block 16.The pressure that Hydraulic Station 9 provides passes to detected pressure switch 3 by oil circuit 5, and oil circuit 5 picks out from oil path block 16, directly passes table surface 4, and is connected with Hydraulic Station 9 with reasonable tendency, reduces the pressure loss on the oil circuit, to realize accurate test.
Also be provided with safty shield 2.Must earlier protective cover 2 be covered before test starts, the quick-speed jigs 12 that closes again is to guarantee experiment safety.
Also be provided with one-way throttle stop valve 7.During Hydraulic Station 9 voltage supply, hydraulic oil is by the output of electric-motor pump group, through acting on the detected pressure switch 37 throttling pressure stabilization functions of one-way throttle stop valve behind the one-way throttle stop valve 7; During the low pressure oil return, under the control of three position four-way directional control valve 13, according to testing requirements hydraulic oil through high-pressure overflow valve 15, low pressure relief valve 14, perhaps direct oil sump tank through three position four-way directional control valve 13 after, one-way throttle stop valve 7 plays the retaining valve effect.
Action by above-mentioned multiple valve cooperates, and the pressure switch durable test stand of this embodiment can reach experiment effect both switching in order testing desired force value in the fixed cycle.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (6)
1. a pressure switch durable test stand comprises the pressure source that pressure is provided to detected pressure switch, it is characterized in that:
Described pressure source is a Hydraulic Station;
Be provided with adapter, oil path block in the oil circuit between Hydraulic Station and detected pressure switch, described adapter is arranged in the oil circuit between detected pressure switch and the oil path block, described oil path block is arranged in the oil circuit between adapter and the Hydraulic Station, and detected pressure switch is installed on the described adapter;
Also be provided with surplus valve and reversal valve in the described oil circuit.
2. pressure switch durable test stand as claimed in claim 1 is characterized in that:
Described oil path block is provided with vent valve.
3. pressure switch durable test stand as claimed in claim 1 or 2 is characterized in that:
Also be provided with safty shield.
4. pressure switch durable test stand as claimed in claim 3 is characterized in that:
Also be provided with the one-way throttle stop valve in the described oil circuit.
5. pressure switch durable test stand as claimed in claim 4 is characterized in that:
Described surplus valve comprises high-pressure overflow valve and low pressure relief valve.
6. pressure switch durable test stand as claimed in claim 5 is characterized in that:
Described reversal valve is a three position four-way directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201707320U CN201110806Y (en) | 2007-11-12 | 2007-11-12 | Pressure switch durability testing stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201707320U CN201110806Y (en) | 2007-11-12 | 2007-11-12 | Pressure switch durability testing stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110806Y true CN201110806Y (en) | 2008-09-03 |
Family
ID=39895341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201707320U Expired - Lifetime CN201110806Y (en) | 2007-11-12 | 2007-11-12 | Pressure switch durability testing stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110806Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776533A (en) * | 2010-02-11 | 2010-07-14 | 深圳市陆地方舟电动车有限公司 | Debugging detection device of vacuum pressure switch |
| CN103792104A (en) * | 2014-01-24 | 2014-05-14 | 中铁隧道集团有限公司 | Tunnel analog loading experimental platform |
| CN103823178A (en) * | 2012-11-16 | 2014-05-28 | 哈尔滨飞机工业集团有限责任公司 | High and low torque pressure switch tester |
| CN106199413A (en) * | 2016-06-29 | 2016-12-07 | 浙江科技学院 | A kind of oil pressure shut-off switch functional test desk |
-
2007
- 2007-11-12 CN CNU2007201707320U patent/CN201110806Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776533A (en) * | 2010-02-11 | 2010-07-14 | 深圳市陆地方舟电动车有限公司 | Debugging detection device of vacuum pressure switch |
| CN103823178A (en) * | 2012-11-16 | 2014-05-28 | 哈尔滨飞机工业集团有限责任公司 | High and low torque pressure switch tester |
| CN103792104A (en) * | 2014-01-24 | 2014-05-14 | 中铁隧道集团有限公司 | Tunnel analog loading experimental platform |
| CN103792104B (en) * | 2014-01-24 | 2016-10-05 | 中铁隧道集团有限公司 | Tunnels mimic loading experiment platform |
| CN106199413A (en) * | 2016-06-29 | 2016-12-07 | 浙江科技学院 | A kind of oil pressure shut-off switch functional test desk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080903 |