CN101556211A - Hydraulic pressure test simulator in chamber - Google Patents
Hydraulic pressure test simulator in chamber Download PDFInfo
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- CN101556211A CN101556211A CNA2007101873378A CN200710187337A CN101556211A CN 101556211 A CN101556211 A CN 101556211A CN A2007101873378 A CNA2007101873378 A CN A2007101873378A CN 200710187337 A CN200710187337 A CN 200710187337A CN 101556211 A CN101556211 A CN 101556211A
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- pressure
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- plug head
- upper plug
- coat
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Abstract
The invention discloses a high-precision hydraulic pressure test simulator in a chamber, which is suitable for simulation test for the hydraulic pressure in various chambers, especially for the hydraulic pressure in a combustion chamber of an engine. The simulator is designed in a sealed manner by using the design principle of back pressure and comprises a strengthening rod, an upper end plug 1, a thin-wall circular barrel, a lower end plug with a pressure connector, and an O-shaped sealing ring. The invention has the functions of pressurization and automatic exhaust, can really stimulate the actual working state of the thin-wall circular barrel, is convenient for installation and maintenance and can perform comprehensive evaluation to the performance of the thin-wall circular barrel.
Description
Technical field
The present invention relates to a kind of hydraulic pressure test simulator, particularly a kind of hydraulic pressure test simulator in chamber belongs to the mechanical test field.
Background technology
The indoor hydraulic pressure test of engine combustion requires that pressure is higher, the dwell time requires longlyer, and burner ends is the thin-wall tubular structure that internal thread connects, and therefore to do the hydraulic testing comparatively difficult the firing chamber in.
The main at present proving installation that adopts as shown in Figure 1, it mainly is made up of upper plug head 2, firing chamber (thin cylinder) 7 and lower end cap 8 etc.Its assembling process is: firing chamber 7 is spun on the lower end cap 8 that has blank holder 4, fills medium (as water etc.) 6, the air in the chamber is drained; Screw on the upper plug head 2 of firing chamber 7 again, in use seal, pressurize by pressurization interface 1 with planar sealing pad 3.
The shortcoming and defect of present proving installation:
1. the duty that at present device can not actual response firing chamber 7, this device have blank holder 47 circumferencial direction limit to some extent in the firing chamber, have stoped the elastic deformation of firing chamber 7 when the interior hydraulic testing;
2. this test unit sealing effectiveness is undesirable and since should in hydraulic devices adopt to go up lower plug cover and push down the end face of firing chamber and seal, in use, because snap-in force is not easy to grasp in the assembling process, if snap-in force is excessive, the sealing gasket cracky, be easy to generate leakage, influence sealing effectiveness;
3. this test unit exhaust is incomplete, and this installs in process of the test, by filling medium, reach the purpose of exhaust, but test unit still can retain some air, can impact test data, also has certain danger simultaneously in process of the test;
4. this test unit dismounting is inconvenient, and test efficiency is low, in use needs to screw lower end cap two ends screw thread and makes sealing gasket produce corresponding decrement, so just need apply bigger moment of torsion, in case test is finished, the firing chamber dismounting is inconvenient.
Summary of the invention
The objective of the invention is to invent a kind of fidelity height, security is good, convenience is simple and direct, be applicable to hydraulic analogue proving installation in the chamber of high pressure.
The present invention is made up of boosting-rod, the upper plug head I, the thin cylinder that have exhaust apparatus, lower end cap I, ○Xing Mifengquan, the pressure interface that has an input media; Described upper plug head I is turned one's coat and is pressed hole, star vent port to form by compensating tank, zero shape circle annular groove, external thread interface, driving hole, pressure ring, exhaust mandrel, ○Xing Mifengquan, U-shaped, and wherein pressure ring, exhaust mandrel, ○Xing Mifengquan are the exhaust apparatus of upper plug head I; Described lower end cap I is turned one's coat and is pressed hole, plug interstitial hole, pressure input interface to form by compensating tank, zero shape circle annular groove, external thread interface, installation screw, U-shaped, wherein the input media of lower end cap I is made up of lower end cap interstitial hole, pressure input interface, and wherein to turn one's coat and press the hole be packoff for compensating tank, zero shape circle annular groove and U-shaped; External thread interface, installation screw are external interface;
Upper plug head I is connected at two ends up and down with thin cylinder by bolt respectively with lower end cap I in the simulating test device of the present invention; The upper plug head upper surface is circular concavity, and boosting-rod crosses in the driving hole on upper plug head I; The exhaust apparatus of upper plug head I is made up of pressure ring, exhaust mandrel, ○Xing Mifengquan and star vent port from bottom to up successively; Packoff among upper plug head I and the lower end cap I is turned one's coat by ○Xing Mifengquan and U-shaped and is pressed the hole to form.
Its seal operation principle is: turn one's coat by U-shaped because of the groove inner bottom part of ○Xing Mifengquan and press the hole to communicate with medium in the annular seal space, when the pressure in the annular seal space raises, when zero shape is enclosed pressure in the circular vallecular cavity and is raise, thereby make zero shape enclose the tighter sealing surface that develops, compensate zero shape circle pressure distortion, so just the principle by the pressure effect of turning one's coat has improved sealing effectiveness.
Its drainage works principle is: communicate with outside atmosphere because the thin-walled cylindrical workpiece chamber is inner, so when the time to the water filling of thin-walled cylindrical workpiece inner chamber, the sealed environment of water under little pressure condition of the formation of the tension force effect meeting under the small gap condition, the exhaust mandrel upwards can be promoted in effect of water pressure, until contacting with the ○Xing Mifengquan of upper surface, the final inner chamber that forms a sealing, cavity pressure is big more, seals well more.When test finishes, during the pressure release of thin-walled cylindrical workpiece inner chamber, the exhaust mandrel falls on the pressure ring under action of gravity automatically, and in this moment chamber and chamber is interlinked to the outside, and extraneous air can enter in the chamber, can make the thin-walled cylindrical workpiece inner chamber finish drainage procedure smoothly.
Inventive point of the present invention is:
1. test equipment of the present invention has the high pressure sealing characteristics, the ○Xing Mifengquan groove of last lower end cap is loaded onto ○Xing Mifengquan, and be connected with thin cylinder, groove inner bottom part by making ○Xing Mifengquan communicates with the medium in the annular seal space, and when the pressure in the annular seal space raise, the pressure of zero shape ring recess inner chamber also increased thereupon, thereby make zero shape enclose the tighter sealing surface that develops, compensate zero shape circle pressure distortion, utilize the principle of this pressure effect of turning one's coat, to improve sealing effectiveness;
2. test equipment of the present invention has the automatic vent function, the exhaust mandrel of the exhaust apparatus among its upper plug head I drops on the pressure ring owing to action of gravity, gapped between the star vent port among exhaust mandrel and the upper plug head I, in thin-walled cylindrical workpiece inner chamber the injecting process, air can be discharged in the atmosphere automatically by exhaust apparatus in the chamber, when water level in the thin-walled cylindrical workpiece chamber rises to exhaust mandrel lower surface, because the pressure effect of water, the exhaust mandrel upwards can be promoted, contact with the ○Xing Mifengquan of upper surface, be vented to this in the chamber and finish, finally form the inner chamber of a sealing, and cavity pressure is big more, seals well more.
Beneficial effect: the pressing mold of turning one's coat of the present invention is intended the new sealing principle of proving installation utilization, and the shortcoming of the compression deformation degradation of zero shape circle efficiently solves a high pressure sealing difficult problem when having overcome owing to long-term the use; This simulating test device has the automatic vent function simultaneously, improved test accuracy, and the test process security is improved.Compare with present simulating test device product, have good airproof performance, simple and quick, easy to maintenance, highly versatile, effectively simulated the advantages such as actual working state of thin cylinder.
Description of drawings
Fig. 1-former test unit synoptic diagram
Fig. 2-hydraulic pressure test simulator in chamber of the present invention
Fig. 3-test simulator upper plug head I synoptic diagram of the present invention
Fig. 4-test simulator lower end cap I synoptic diagram of the present invention
Among the figure: the 1-pressure interface, the 2-upper plug head, the 3-planar sealing pad, the 4-blank holder, the 5-bolt, 6-medium (as water etc.), 7-firing chamber (thin cylinder), the 8-lower end cap, the 9-boosting-rod, 10-upper plug head I, the 11-thin cylinder, 12-lower end cap I, 13-O shape O-ring seal, 14-installment work platform, the 15-pressure entrance, the 16-compensating tank, 17-O shape circle annular groove, 18-external thread interface, the 19-driving hole, the 20-pressure ring, 21-exhaust mandrel, 22-O shape O-ring seal, the 23-end face is turned one's coat and is pressed the hole, 24-radially turns one's coat and presses the hole, 25-U shape is turned one's coat and is pressed the hole, turn one's coat in the 26-O shape ring recess and press the hole, 27-star vent port, 28-installs screw, 29-plug interstitial hole, 30-pressure input interface.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
As shown in Figure 2, technical scheme of the present invention mainly is made up of boosting-rod (9), upper plug head I (10), thin cylinder (11), lower end cap I (12), ○Xing Mifengquan (13), pressure interface (15).
As shown in Figure 3: described upper plug head I (10) is turned one's coat and is pressed hole (25), star vent port (27) to form by compensating tank (16), zero shape circle annular groove (17), external thread interface (18), driving hole (19), pressure ring (20), exhaust mandrel (21), O-ring seals (22), U-shaped.Wherein: U-shaped is turned one's coat and is pressed hole (25) can be equipped with the pressure hole Φ 0.5 (26) that turns one's coat in equally distributed 4 the zero shape ring recess as required in zero shape circle annular groove (17) bottom, and corresponding this hole is made a call to 4 end faces at medial launder and is turned one's coat and press hole Φ 3 (23) and make a call to 4 pressure hole (24) Φ 3 that radially turn one's coat on upper plug head I excircle, the formation U-shaped is turned one's coat and is pressed hole (25), the main effect in this hole is that circular groove (17) is connected with sealing medium, and utilizing turns one's coat compresses into the row sealing.For the ease of processing, turn one's coat in 4 the zero shape ring recess with zero shape circle annular groove (17) bottom earlier and press hole Φ 0.5 (26), and corresponding this hole is made a call to 4 end faces at medial launder and is turned one's coat and press hole Φ 3 (23) and make a call to 4 pressure hole (24) Φ 3 that radially turn one's coat on upper plug head I excircle, these holes connect, then the hole of the Φ on plug left side and the outer circumference surface 3 is blocked up, represented with stain in the accompanying drawing.
As shown in Figure 4: described lower end cap I (12) is turned one's coat and is pressed hole (25), plug interstitial hole (29), pressure input interface (30) to form by compensating tank (16), zero shape circle annular groove (17), external thread interface (18), installation screw (28), U-shaped; Its forming process is turned one's coat with the U-shaped on the upper plug head I and is pressed the hole the same.
As shown in Figure 2, the ○Xing Mifengquan of upper plug head I and lower end cap I (13) can be according to concrete operating position choice criteria model, place in the circular groove of lower end cap (17), turn one's coat by U-shaped because of the groove inner bottom part of ○Xing Mifengquan (9) and to press the interior medium of hole (25) and annular seal space to communicate, when the pressure in the annular seal space raises, when zero shape is enclosed pressure in circular groove (17) chamber and is raise, thereby make zero shape enclose the tighter sealing surface that develops, compensate zero shape circle pressure distortion, so just the principle by the pressure effect of turning one's coat has improved sealing effectiveness.
As shown in Figure 2, because action of gravity, exhaust mandrel (21) among Fig. 3 drops on the pressure ring (20), gapped between the star vent port (27) among exhaust mandrel and the upper plug head I, inside, thin-walled cylindrical workpiece chamber this moment communicates with outside atmosphere, when to the water filling of thin-walled cylindrical workpiece inner chamber, because the sealed environment of water under little pressure condition of the formation of the tension force effect meeting under the small gap condition, exhaust mandrel (21) upwards can be promoted in effect of water pressure, until contacting with the ○Xing Mifengquan (22) of upper surface, the final inner chamber that forms a sealing, cavity pressure is big more, seals well more.When test finishes, during the pressure release of thin-walled cylindrical workpiece inner chamber, exhaust mandrel (21) is because action of gravity falls on the pressure ring (20) automatically, and in this moment chamber and chamber is interlinked to the outside, and extraneous air can enter in the chamber, can make the thin-walled cylindrical workpiece inner chamber finish drainage procedure smoothly.
Hydraulic pressure test simulator in chamber of the present invention with constitute the water pressure test in cavity system by adjustable flow plunger type metering pump, hydraulic pressure snubber assembly, pressure transducer, pressure release solenoid valve and intelligent PID control system, finish test to sealed chamber's pressure.
Claims (1)
1, hydraulic analogue proving installation in a kind of chamber is made up of boosting-rod (9), the upper plug head I (10) that has exhaust apparatus, thin cylinder (11), lower end cap I (12), ○Xing Mifengquan (13), pressure interface (15); It is characterized in that: described upper plug head I (10) is turned one's coat and is pressed hole (25), star vent port (27) to form by compensating tank (16), zero shape circle annular groove (17), external thread interface (18), driving hole (19), pressure ring (20), exhaust mandrel (21), ○Xing Mifengquan (22), U-shaped, wherein the exhaust apparatus of upper plug head I (10) is made up of pressure ring (20), exhaust mandrel (21), ○Xing Mifengquan (22); Described lower end cap I (12) is turned one's coat and is pressed hole (25), plug interstitial hole (29), pressure input interface (30) to form by compensating tank (16), zero shape circle annular groove (17), external thread interface (18), installation screw (28), U-shaped; Wherein compensating tank (16), zero shape circle annular groove (17), ○Xing Mifengquan (22) and the U-shaped pressure hole of turning one's coat is a packoff; External thread interface, installation screw are external interface; Its annexation is: upper plug head I is connected at two ends up and down with thin cylinder by bolt respectively with lower end cap I; The upper plug head upper surface is circular concavity, and boosting-rod crosses in the driving hole on upper plug head I; The exhaust apparatus of upper plug head I is made up of pressure ring, exhaust mandrel, ○Xing Mifengquan and star vent port from bottom to up successively; Packoff among upper plug head I and the lower end cap I is turned one's coat by ○Xing Mifengquan and U-shaped and is pressed the hole to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101873378A CN101556211A (en) | 2007-11-20 | 2007-11-20 | Hydraulic pressure test simulator in chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101873378A CN101556211A (en) | 2007-11-20 | 2007-11-20 | Hydraulic pressure test simulator in chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101556211A true CN101556211A (en) | 2009-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101873378A Pending CN101556211A (en) | 2007-11-20 | 2007-11-20 | Hydraulic pressure test simulator in chamber |
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| Country | Link |
|---|---|
| CN (1) | CN101556211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735546A (en) * | 2012-06-11 | 2012-10-17 | 中国航天科技集团公司第四研究院四0一所 | Pressure maintaining detector for through-type specimen |
| CN102928178A (en) * | 2012-10-31 | 2013-02-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Differential-pressure sealing test device and test method thereof |
-
2007
- 2007-11-20 CN CNA2007101873378A patent/CN101556211A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735546A (en) * | 2012-06-11 | 2012-10-17 | 中国航天科技集团公司第四研究院四0一所 | Pressure maintaining detector for through-type specimen |
| CN102928178A (en) * | 2012-10-31 | 2013-02-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Differential-pressure sealing test device and test method thereof |
| CN102928178B (en) * | 2012-10-31 | 2014-12-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Differential-pressure sealing test device and test method thereof |
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Open date: 20091014 |