CN203479476U - Hydraulic support safety valve testing stand - Google Patents
Hydraulic support safety valve testing stand Download PDFInfo
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- CN203479476U CN203479476U CN201320441414.9U CN201320441414U CN203479476U CN 203479476 U CN203479476 U CN 203479476U CN 201320441414 U CN201320441414 U CN 201320441414U CN 203479476 U CN203479476 U CN 203479476U
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Abstract
The utility model discloses a hydraulic support safety valve testing stand, which is characterized by comprising a hydraulic power source part and a test system part. The hydraulic power source part comprises an emulsion box. The emulsion box is communicated with a testing loop through a pump and a first non-return valve. The testing stand also comprises a supercharging device. The emulsion box is communicated with the inlet of the supercharging device through a second non-return valve. The outlet of the supercharging device is communicated with the testing loop through a high-pressure non-return valve. Compared with the prior art, the hydraulic support safety valve testing stand has the advantages of strong special effect, and good testing property.
Description
Technical field
The utility model is a kind of hydraulic pressure pressure testing table, is specially a kind of Safety Valve for Hydraulic Powered Support testing table.
Background technology
Along with new standard < < GB 25974.3_ coal-mine hydraulic support _ 3rd part: the issuing and implementation of hydraulic control system and valve > >, the detection of safety valve has been proposed to new standard, to detecting safe testing table, proposed requirements at the higher level, existing testing table can not meet code test requirement.Testing table mainly contains following some problem now:
1, can not realize the moment big-flow high-pressure Test condition of emulsion, impulse test project that cannot experimental safe valve.
2, there is no impact test device, can not realize safety valve impact test project.
3, existing testing table, due to the restriction of accessory and program, cannot carry out the computer acquisition test of intensity.
Summary of the invention
In order to overcome existing testing table, can not meet the requirement of test, the utility model provides a kind of Safety Valve for Hydraulic Powered Support testing table, after adopting this testing table, has advantages of that test effect is good.
For achieving the above object, the technical program is as follows:
A Safety Valve for Hydraulic Powered Support testing table, comprises hydraulic power source part and pilot system part; Described hydraulic power source partly comprises emulsion box, and emulsion box is through pump, the first retaining valve connection test loop; Also include supercharging device, entrance, supercharging device that emulsion box is communicated with supercharging device through the second retaining valve export through high pressure retaining valve also connection test loop.
Further, also include reversal valve, reversal valve outlet connects supercharging device, and entrance is communicated with oil pump outlet.
Further, between the outlet of described reversal valve and oil pump, be provided with low discharge varitrol, described low discharge varitrol comprises the parallel flow speed control valve being communicated with, often opens electromagnet cut off valve; Its two ends are respectively fluid entrance point and fluid endpiece; Wherein fluid endpiece is communicated with pressure switch and reversal valve entrance, and fluid inlet end is communicated with oil pump outlet.
Further, the endpiece of described the first retaining valve is connected with high-pressure overflow valve.
Further, described pilot system partly comprises the 4th retaining valve, and the outlet of the 4th retaining valve is communicated with the port of connecting test part through stop valve; Between port and the 4th retaining valve, be communicated with tensimeter, buffer tank and stop valve, the other end of stop valve is communicated with emulsion tank.
Further, described supercharging device is bidirectional booster cylinder, and emulsion fuel tank has two-way pipeline respectively through two retaining valve connection test components of system as directed, and the emulsion entrance at described pressurized cylinder two ends is communicated with respectively between two retaining valves of above-mentioned pipeline.
Further, be also communicated with sensor with described port, be connected with computer measurement and control system with sensor.
Principle of work of the present utility model and beneficial effect are as follows:
(1) hydraulic power source part, is mainly comprised of pump, low pressure emulsion power pack, control pressurer system, small-large flow automatic switchover system and boost-up circuit.Oil pump top hole pressure is by surplus valve off-load or setting.The hydraulic oil of oil pump output drives bidirectional booster cylinder to carry out supercharging, and maximum output pressure is 80MPa.
Emulsion power pack output pressure is set up by low pressure relief valve, and its effect is to tested valve, to fill low hydraulic fluid to carry out low pressure seal test.
(2) pilot system part, is comprised of retaining valve, stop valve, buffer tank, 1 pressure output, tensimeter and pressure transducer etc.
(3) computer measurement and control system, is comprised of industrial control computer, pressure transducer, tensimeter and TT&C software.First set process of the test parameter, then software is moved different program modules according to what choose by test specimen type, and all kinds of valves are carried out to delivery test.Computing machine, by the pressure signal of the corresponding pressure transducer of process of the test parameter acquisition of test sequential and setting, generates test report automatically after off-test, and by test figure storage, for inquiry later and management.
(4) low discharge varitrol
In the test standard of the safety valve on coal-mine hydraulic support, low discharge opens to overflow to close in the operating mode that testing requirements is 0.04L/min at flow and carries out, but all the other tests do not have the requirement about low discharge, if whole test is all carried out under low discharge, will increase test period so, reduce efficiency, so need a kind of flow that installs energy Control experiment platform, becoming low discharge opening to overflow while closing test, is to be large flow in all the other pilot projects.
At pressure and electrical equipment and Chang Kai electromagnet cut off valve two ends, add an electromagnet cut off valve operating voltage, pressure switch uses normally opened contact, often drives button this voltage is controlled with one.In advance flow speed control valve flow regulation is arrived to the flow status that needs output.
When carrying out conventional test, often drive control knob and remain open state, no matter how oil liquid pressure changes, and can not change the on-state of normally open solenoid valve, and hydraulic oil can enter rear end pipeline by normally open solenoid valve, keeps large flow status.
In the time need to carrying out the test of low discharge output, press and often drive button, the voltage at cut-in pressure relay and normally open solenoid valve two ends, now due to not work of pressure switch, still remain open state, normally open solenoid valve still keeps channel status, large flow feed flow is provided to rear end pipeline, realizes the feed flow of large flow at the beginning; Rising along with line pressure, arrive gradually pressure switch working range, now pressure switch becomes closure from often opening, connect electromagnet cut off valve circuit, electromagnet cut off valve is charged, by electromagnet cut off valve path blockade, hydraulic oil can only enter rear end pipeline by flow speed control valve, because flow speed control valve has been adjusted into low discharge in advance, so now hydraulic-oil quantity diminishes automatically, reach testing requirements.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing;
Fig. 1 is the utility model hydraulic schematic diagram.
Embodiment
The correlation technique content of not addressing below all can adopt or use for reference prior art.
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Embodiment based in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the application's protection.
A Safety Valve for Hydraulic Powered Support testing table, comprising:
Hydraulic power source part, is mainly comprised of high-pressure plunger pump, low pressure emulsion power pack, control pressurer system, small-large flow automatic switchover system and boost-up circuit.
Described boost-up circuit comprises fuel tank 3, oil pump 2, retaining valve 5 that fuel tank 3 drives through oil strainer 4, motor 1 are communicated with low discharge varitrol, the outlet of low discharge varitrol is communicated with solenoid directional control valve 8, two outlets of solenoid directional control valve 8 are communicated with supercharging device, this supercharging device adopts bidirectional booster cylinder 18, the outlet of solenoid directional control valve 8 is communicated with the pressurised oil entrance of pressurized cylinder 18, and supercharging power is provided; The two ends of bidirectional booster cylinder are communicated with emulsion boost-up circuit, described emulsion boost-up circuit comprises two parallel branch roads, each minute branch road comprises the second retaining valve 12, the high pressure retaining valve 19 of emulsion box, two serials, outlet connection test components of system as directed and the tensimeter 29 of minute branch road; The emulsion two ends of wherein said bidirectional booster cylinder are communicated with between the retaining valve 12 and high pressure retaining valve 19 on the road of each.
For realizing protection and regulatory function, between oil pump 2 and retaining valve 5, be communicated with oil-overflow valve 6 and electromagnetic unloading valve 10; Between retaining valve 5 and low discharge varitrol, be connected with oil pressure table 9, stop valve 15 and accumulator 13 and unloading solenoid valve 14; The inlet end of pilot system part is communicated with high-pressure overflow valve 26.
Oil pump top hole pressure is by surplus valve 6 off-loads or setting; The hydraulic oil of oil pump output drives bidirectional booster cylinder to carry out supercharging, and maximum output pressure is 80MPa.
Emulsion power pack output pressure is set up by low pressure relief valve 22, and its effect is to tested valve, to fill low hydraulic fluid to carry out low pressure seal test.
Pilot system part, by retaining valve 19, stop valve 27, buffer tank 28,1 pressure output P, tensimeter 29 and pressure transducer 17 etc., formed, wherein retaining valve 19 entrances are that entrance, the pressure output P of bulk testing system pressure is communicated with test specimen, between retaining valve 19 and pressure output P, be provided with stop valve 27-2, between pressure output P and stop valve 27-2, be provided with and be communicated with buffer tank 28, tensimeter 29, stop valve 27-1 and pressure transducer 17; The other end of stop valve 27-1 is communicated with emulsion box.
Computer measurement and control system, is comprised of industrial control computer, pressure transducer 17, tensimeter and TT&C software.First set process of the test parameter, then software is moved different program modules according to what choose by test specimen type, and all kinds of valves are carried out to delivery test.Computing machine, by the pressure signal of the corresponding pressure transducer of process of the test parameter acquisition of test sequential and setting, generates test report automatically after off-test, and by test figure storage, for inquiry later and management.
Low discharge varitrol: comprising the parallel flow speed control valve 7 being communicated with, often opening electromagnet cut off valve 21; Its two ends are respectively fluid entrance point and fluid endpiece; Wherein fluid endpiece is communicated with pressure switch 20 and reversal valve 8 entrances, and fluid inlet end is communicated with oil pump outlet; The outlet of flow speed control valve 7 is communicated with unloading solenoid valve 14 through large flow solenoid valve 16.
Visible, the utility model can reach following object:
1), pilot system is comprehensive by the test loop in standard, reaches the test condition of standard-required;
2), pilot project and process are strictly undertaken by delivery test requirement in standard;
3), testing table pressure shows and jointly to be shown by stem-winder and digital display meter, accuracy is high, reliability is strong.
4), in process of the test, manual operation safety valve is tested, test figure is by computer acquisition;
5), test figure is by high-precision sensor measurement, accuracy of detection reaches standard-required;
6), experimental report is pressed standard-required design; Test figure can be stored, and is convenient to later management.
7), carry out low discharge and open and overflow while closing attribute testing, large flow low discharge is according to setting conversion automatically, without artificial adjustment.
8) adopt the pressurized cylinder that pressure ratio is 1:4, delivery rate is large.
9) adopt accumulator repairing mode, can export large flow moment and carry out surge pressure test.
10) testing table front end installs high precision backwash filter (user provides) additional, increases test(ing) medium cleanliness.
7) on worktable, timer is installed.
The above is only the application's preferred implementation, makes those skilled in the art can understand or realize the application.To the multiple modification of these embodiment, will be apparent to one skilled in the art, General Principle as defined herein can be in the situation that do not depart from the application's spirit or scope, realization in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a Safety Valve for Hydraulic Powered Support testing table, is characterized in that, comprises hydraulic power source part and pilot system part; Described hydraulic power source partly comprises emulsion box, and emulsion box is through pump, the first retaining valve connection test loop; Also include supercharging device, entrance, supercharging device that emulsion box is communicated with supercharging device through the second retaining valve export through high pressure retaining valve also connection test loop.
2. Safety Valve for Hydraulic Powered Support testing table according to claim 1, is characterized in that, also includes reversal valve, and reversal valve outlet connects supercharging device, and entrance is communicated with oil pump outlet.
3. Safety Valve for Hydraulic Powered Support testing table according to claim 2, it is characterized in that, between the outlet of described reversal valve and oil pump, be provided with low discharge varitrol, described low discharge varitrol comprises the parallel flow speed control valve being communicated with, often opens electromagnet cut off valve; Its two ends are respectively fluid entrance point and fluid endpiece; Wherein fluid endpiece is communicated with pressure switch and reversal valve entrance, and fluid inlet end is communicated with oil pump outlet.
4. Safety Valve for Hydraulic Powered Support testing table according to claim 1, is characterized in that, the endpiece of described the first retaining valve is connected with high-pressure overflow valve.
5. Safety Valve for Hydraulic Powered Support testing table according to claim 1, is characterized in that, described pilot system partly comprises the 4th retaining valve, and the outlet of the 4th retaining valve is communicated with the port of connecting test part through stop valve; Between port and the 4th retaining valve, be communicated with tensimeter, buffer tank and stop valve, the other end of stop valve is communicated with emulsion tank.
6. Safety Valve for Hydraulic Powered Support testing table according to claim 1, it is characterized in that, described supercharging device is bidirectional booster cylinder, emulsion fuel tank has two-way pipeline respectively through two retaining valve connection test components of system as directed, and the emulsion entrance at described pressurized cylinder two ends is communicated with respectively between two retaining valves of above-mentioned pipeline.
7. Safety Valve for Hydraulic Powered Support testing table according to claim 5, is characterized in that, is also communicated with sensor with described port, is connected with computer measurement and control system with sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441414.9U CN203479476U (en) | 2013-07-23 | 2013-07-23 | Hydraulic support safety valve testing stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441414.9U CN203479476U (en) | 2013-07-23 | 2013-07-23 | Hydraulic support safety valve testing stand |
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| Publication Number | Publication Date |
|---|---|
| CN203479476U true CN203479476U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320441414.9U Expired - Fee Related CN203479476U (en) | 2013-07-23 | 2013-07-23 | Hydraulic support safety valve testing stand |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438595A (en) * | 2016-11-21 | 2017-02-22 | 天津尚吉液压设备有限公司 | Novel adjustable pressure supply system |
| CN107655761A (en) * | 2017-10-30 | 2018-02-02 | 上海应用技术大学 | Rupture disk pressure release test system and method |
| CN107939755A (en) * | 2017-12-27 | 2018-04-20 | 南京林业大学 | Swivel coupling hydraulic loaded pressure charging system |
| CN109556874A (en) * | 2018-11-28 | 2019-04-02 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of aero-engine pressurized strut traffic intensity experimental rig |
| CN115324952A (en) * | 2022-08-12 | 2022-11-11 | 山东兖矿智能制造有限公司 | Valve body detection hydraulic system and valve body detection test device |
-
2013
- 2013-07-23 CN CN201320441414.9U patent/CN203479476U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438595A (en) * | 2016-11-21 | 2017-02-22 | 天津尚吉液压设备有限公司 | Novel adjustable pressure supply system |
| CN107655761A (en) * | 2017-10-30 | 2018-02-02 | 上海应用技术大学 | Rupture disk pressure release test system and method |
| CN107939755A (en) * | 2017-12-27 | 2018-04-20 | 南京林业大学 | Swivel coupling hydraulic loaded pressure charging system |
| CN109556874A (en) * | 2018-11-28 | 2019-04-02 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of aero-engine pressurized strut traffic intensity experimental rig |
| CN115324952A (en) * | 2022-08-12 | 2022-11-11 | 山东兖矿智能制造有限公司 | Valve body detection hydraulic system and valve body detection test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150723 |
|
| EXPY | Termination of patent right or utility model |