CN102323158B - High pressure safety valve detection system - Google Patents
High pressure safety valve detection system Download PDFInfo
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- CN102323158B CN102323158B CN201110227651.0A CN201110227651A CN102323158B CN 102323158 B CN102323158 B CN 102323158B CN 201110227651 A CN201110227651 A CN 201110227651A CN 102323158 B CN102323158 B CN 102323158B
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Abstract
The invention relates to a high pressure safety valve detection system which comprises a control system and a water tank; the control system is respectively connected with a pressure sensor, an electric pressure-regulating valve, a first solenoid valve, and a second solenoid valve; the pressure sensor is connected with a double-needle pressure gauge; the first solenoid valve and the second solenoid valve are in parallel connection, and are connected to a first air filter; two ends of the first air filter are respectively connected with a first driving air inlet and the electric pressure-regulating valve; the other end of the electric pressure-regulating valve is connected with a first governing valve; the first governing valve is connected with a booster pump and a second governing valve; the second governing valve is connected with a manual pressure-regulating valve; a pressure gauge is mounted on the manual pressure-regulating valve; the manual pressure-regulating valve is connected with a second air filter; the second air filter is connected with a second driving air inlet. The beneficial effects of the invention are that: high-precision calibration of the high pressure safety valve is realized; the automation level is high; all operations of the operators can be performed only at a measurement and control bench after all is in order; the labor intensity is decreased, and the safety hidden danger is reduced.
Description
Technical field
The present invention relates to pressure checking device field, relate in particular to a kind of high pressure safety valve detection system.
Background technology
Safety valve is the important safety annex of pressure-bearing class special equipment, and verification is at least answered once every year for the verification regulation of safety by country.In recent years, along with industrial fast development, ultra-high pressure safety valve is widely used in commercial production, and for guaranteeing process units safe operation, Accident prevention plays an important role.At present, domestic many ultra-high pressure safety valves can only be sent to and carry out verification abroad, and the long expense of time of carrying out external censorship is high, causes enterprise to undertake high inspection cost.Domestic produced safety valve testing system is only low-pressure safety valve checking system, adopts electronic liquid pump to carry out pressure test, setting and verification to safety valve, and there are the following problems and shortcoming for domestic electronic liquid pump low-pressure safety valve check system at present:
1, for realizing each function of safety valve testing, the checkout equipment of the electronic liquid pump assembling that uses, carries out complicated connection by scattered equipment, but the final function that can control realizing is comparatively single;
2, the pressure that electrodynamic pump can provide and flow are all very limited, only can be used for the test of low-pressure safety valve, and can not be undertaken by desirable rate of pressurization;
3, do not have special detection software to support mutually, cannot carry out setting parameter, more there is no the demonstration of real-time pressure curve, all operations is operation manually, and institute data show that being eye-observation draws, so, has to be confirmed for the accuracy of numerical value.Operation manually, just very difficult for the speed control of pump, labor capacity improves greatly.
4, electronic liquid pump itself is bulky and heavy, causes equipment occupation space larger, mobile inconvenience, and the noise of equipment brings certain impact to the working environment in laboratory.Electronic liquid pump needs oil to lubricate, and the long-term use of pump can cause the generation of oil leakage phenomenon, pollutes for laboratory environment, and the maintaining of equipment has certain difficulty.
Summary of the invention
The object of this invention is to provide a kind of high pressure safety valve detection system, the deficiency existing to overcome the above-mentioned aspect of prior art.
The object of the invention is to be achieved through the following technical solutions:
A kind of high pressure safety valve detection system, comprise control system and water tank, described control system is Bonding pressure sensor respectively, electric pressure-regulating valve, the first solenoid valve and the second solenoid valve, pressure transducer is connected with crosspointer tensimeter, the first solenoid valve is with the second solenoid valve parallel connection and be all connected the first air strainer, the two ends of the first air strainer connect respectively the first driving air intake and electric pressure-regulating valve, the other end of electric pressure-regulating valve connects the first flow speed control valve, the first flow speed control valve connects supercharge pump and the second flow speed control valve, the second flow speed control valve connects manual pressure regulating valve, tensimeter is housed on manual pressure regulating valve, manual pressure regulating valve connects the second air strainer, the second air strainer connects second and drives air intake, supercharge pump connects respectively Y type oil absorption filter and retaining valve, Y type oil absorption filter be connected water tank connect, water tank one side is provided with liquid level gauge, water tank bottom is provided with tapping valve, tapping valve connects water tank leakage fluid dram, retaining valve connects gas control normally open valve, gas control normally open valve connects the first solenoid valve and pressure retaining valve, pressure retaining valve connects gas control normally close valve and blowdown valve, gas control normally close valve and blowdown valve parallel connection and gas control normally close valve and blowdown valve are all connected water tank leakage fluid dram, the second solenoid valve connects gas control normally close valve, pressure transducer connects respectively pressure retaining valve, gas control normally close valve and blowdown valve.
Beneficial effect of the present invention is: for guaranteeing process units safe operation, Accident prevention plays an important role; Top pressure can reach 200Mpa, can control in real time checking procedure, and can Real-time Collection and record checking data, realize the high-precision pre-check of high-pressure safety valve; Automatization level is high, and after everything is ready, operating personnel's all operations only need carry out at monitoring and control unit, has reduced labour intensity, has reduced potential safety hazard; Can check in a large number fund for the saving of ultra-high pressure safety valve applying unit, shorten the stop production to overhaul time of enterprise, will receive good economic benefit and social benefit, there is wide Technique Popularizing prospect; Supercharge pump is without oil lubrication, without noxious gas emission, can be to environment, and the maintenance simple and fast that gets up.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the process flow diagram of a kind of high pressure safety valve detection system described in the embodiment of the present invention.
In figure:
1, control system; 2, water tank; 3, supercharge pump; 4, first drive air intake; 5, second drive air intake; 6, pressure transducer; 7, electric pressure-regulating valve; 8, the first solenoid valve; 9, the second solenoid valve; 10, crosspointer tensimeter; 11, the first air strainer; 12, the first flow speed control valve; 13, the second flow speed control valve; 14, manual pressure regulating valve; 15, the second air strainer; 16, tensimeter; 17, Y type oil absorption filter; 18, retaining valve; 19, liquid level gauge; 20, tapping valve; 21, water tank leakage fluid dram; 22, gas control normally open valve; 23, pressure retaining valve; 24, gas control normally close valve; 25, blowdown valve.
Embodiment
As shown in Figure 1, a kind of high pressure safety valve detection system described in the embodiment of the present invention, comprise control system 1 and water tank 2, described control system 1 Bonding pressure sensor 6 respectively, electric pressure-regulating valve 7, the first solenoid valve 8 and the second solenoid valve 9, pressure transducer 6 is connected with crosspointer tensimeter 10, the first solenoid valve 8 is with the second solenoid valve 9 parallel connections and be all connected the first air strainer 11, the two ends of the first air strainer 11 connect respectively the first driving air intake 4 and electric pressure-regulating valve 7, the other end of electric pressure-regulating valve 7 connects the first flow speed control valve 12, the first flow speed control valve 12 connects supercharge pump 3 and the second flow speed control valve 13, the second flow speed control valve 13 connects manual pressure regulating valve 14, tensimeter 16 is housed on manual pressure regulating valve 14, manual pressure regulating valve 14 connects the second air strainer 15, the second air strainer 15 connects the second driving air intake 5, supercharge pump 3 connects respectively Y type oil absorption filter 17 and retaining valve 18, Y type oil absorption filter 17 be connected water tank 2 and connect, water tank 2 one sides are provided with liquid level gauge 19, water tank 2 bottoms are provided with tapping valve 20, tapping valve 20 connects water tank leakage fluid dram 21, retaining valve 18 connects gas control normally open valve 22, gas control normally open valve 22 connects the first solenoid valve 8 and pressure retaining valve 23, pressure retaining valve 23 connects gas control normally close valve 24 and blowdown valve 25, gas control normally close valve 24 and blowdown valve 25 parallel connections and gas control normally close valve 24 and blowdown valve 25 are all connected water tank leakage fluid dram 21, the second solenoid valve 9 connects gas control normally close valve 24, pressure transducer 6 connects respectively pressure retaining valve 23, gas control normally close valve 24 and blowdown valve 25.
When concrete use, the first driving air intake 4 is electronic control, is furnished with electric pressure-regulating valve 7, can be by the rate of pressurization of control system 1 startup-shutdown and control supercharge pump 3, gas filters through the first air filter 11, by electric pressure-regulating valve 7 and the first flow speed control valve 12, at the first air strainer 11 downstream access manual pressure regulating valves 14, pressurized air is received the control solenoid valve of pressure retaining valve 23 and blowdown valve 25 after manual pressure regulating valve 14 decompressions, drives gas as valve; The second driving air intake 5 is manually to control, is furnished with manual pressure regulating valve 7, need manually to set and drive air pressure, thereby control start-stop and the rate of pressurization of supercharge pump 3, gas through the second air strainer 15 filter laggard enter manual pressure regulating valve 7 through the second flow speed control valve 13, no matter electronic or manual gas finally enters the actuator chamber of supercharge pump 3, thus start-stop action and the rate of pressurization of control supercharge pump 3; After water tank 2 water fillings, open the stop valve of water outlet of water tank, supercharge pump 3 starts action under the effect that drives gas, water carries out supercharging via y-type filter 17 to the entrance of supercharge pump 3, and the high-pressure medium after supercharging enters through retaining valve 18, gas control normally open valve 22 safety valve that needs test after system outlet; The pressure transducer 6 in control system 1 exit is for the force value Real-time Feedback of system outlet to the PLC controller in control system 1, and signal is after control system 1 is processed, and control system 1 can be controlled for system by pre-set parameter.
Supercharging part is the core of whole safety valve detection system, by supercharge pump 3 and retaining valve 18, flow speed control valve, Pneumatic valve, solenoid valve, electric pressure-regulating valve 7, the compositions such as pressure transducer 6 and various stainless steel pipe joint and tensimeter 16, supercharging part can be carried out manual operation, also can under the control of TT&C system, carry out automatic operation, press the button system and can automatically start supercharge pump 3, electric pressure-regulating valve 7 automatically regulates and drives air pressure under the control of electric signal, thereby control supercharge pump 3 rate of circulation and delivery rate, output pressure is transferred to the PLC controller in control system 1 by the pressure transducer 6 of system outlet, in the time that output pressure reaches the pressure parameter value of safety valve test, system auto stop.
In control system 1, be provided with software systems, can realize and automatically suppress, data storage, show control interface and pressure curve in real time, can set in real time.This detection system adopts pneumatic liquid pump supercharging, has utilized dexterously its output pressure and has driven air pressure this feature that is directly proportional, and has guaranteed the adjustable controlled performance of output pressure flow, meets the testing requirements of this type safety-valve; Powerful, comprehensive, system, mainly comprise following functions: be 1. applicable to the test of the safety valve of multiple pressure rating, particularly can test high-pressure safety valve testing requirements, pressure is optional, controlled, and flow is adjustable; 2. the parameter of test is comprehensive, comprises test pressure, rated pressure adjusting, safety valve unlatching, the mensuration of closing presure and the verification of safety valve pressure etc.; 3. software interface is clear, various pressure when monitored picture can comprehensively show safety valve testing, and various test datas can be unified in data query table and find, simple and quick; Can show different curves, comprise the real-time pressure-time curve of demonstration, show historical pressure-time curve, picture is directly perceived visual strong; 4. manually with automatically optional, dirigibility is strong; 5. special control software flexible close friend, comprises multiple interface, in full according to the show, state of a control interface, can freely switch; 6. all image data can store specific data file into, conveniently call, and each test can generate word version test report automatically, can directly print, and signs and seal and comes into force.
Native system is provided with system operator's console, this operator's console comprise control desk power switch, emergency stop push button, automatic/hand mode conversion switch, automatically control knob (start and stop), again suppress the parts such as corresponding pilot lamp of control knob, holding pressure control button, pressure release control knob, system pressure read out instrument and above-mentioned control knob.Wherein: control desk power switch: be blasting system monitoring operation desk and inner electric power supply thereof; Emergency stop push button: for system stopping rapidly whole system in the time there is abnormal and emergency; Automatic/hand switch: for the automatic or manual operation of selective system; Automatically control knob: for controlling the startup of system under automatic operational mode and stopping; Holding pressure control button: for the pressurize of manual control system with stop pressurize; Pressure release control knob: for the pressure release of manual control system with stop pressure release; System alarm pilot lamp: in the time of system overpressure or when sensor fault, system alarm pilot lamp is bright; Automatically run indicator: bright when selecting automatic operational mode and pressing automatic control start button rear indicator light; System pressure digital indicator: for the force value of dynamic display system.
This detection system comprises manual mode and automation mechanized operation pattern:
Manual mode: the driving gas manual modulation valve 14 of slow circumvolve erecting of panel to the right, supercharge pump 3 will produce a corresponding high-pressure at High voltage output pipeline, the pace of change positive correlation of the speed of manual rotation manual modulation valve 14 and high-pressure side output pressure, now can read by the tensimeter of erecting of panel 16 output pressure of pressure piping, continue rotary manual variable valve 14 knobs to the right, until safety valve jumping up, now close rapidly manual pressure retaining valve 23, and reverse rotation manual modulation valve 14, driver pressure is adjusted to 0, by the time when safety valve stops releasing, accurately read the take-off value of safety valve by the top pressure memory function of tensimeter 16, and now manometric pressure of record, this pressure is the recovery pressure of safety valve, after having recorded, open manual blowdown valve 25, discharge conduit pressure, repeating 3 times measures, get its mean value, can obtain take-off value and the recovery pressure value of this safety valve.
Automation mechanized operation: open computer, enter main interface, the upper pressure limit (system will guarantee that High voltage output pressure can not exceed this value) of this test is set, according to the volume of this tested safety valve, suitable pumping rate ((6～80) MPa/Min) is set, click start button, the system High voltage output pressure that will progressively raise, until when safety valve generation take-off, system will stop supercharging and close Pneumatic pressure-retaining valve 23, the safety valve that measures to be checked is replied after sealing, system will be added pressure curve in the report generating, automatically record this safety valve jumping up value and recovery value, and by Pneumatic blow valve 23 discharge conduit pressure, repeating 3 times measures, get its mean value, can obtain take-off value and the recovery pressure value of this safety valve.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection scope of the present invention.
Claims (1)
1. a high pressure safety valve detection system, comprise control system (1) and water tank (2), it is characterized in that: described control system (1) is Bonding pressure sensor (6) respectively, electric pressure-regulating valve (7), the first solenoid valve (8) and the second solenoid valve (9), pressure transducer (6) is connected with crosspointer tensimeter (10), the first solenoid valve (8) is with the second solenoid valve (9) parallel connection and be all connected the first air strainer (11), the two ends of the first air strainer (11) connect respectively the first driving air intake (4) and electric pressure-regulating valve (7), the other end of electric pressure-regulating valve (7) connects the first flow speed control valve (12), the first flow speed control valve (12) connects supercharge pump (3) and the second flow speed control valve (13), the second flow speed control valve (13) connects manual pressure regulating valve (14), the first tensimeter (16) is housed on manual pressure regulating valve (14), manual pressure regulating valve (14) connects the second air strainer (15), the second air strainer (15) connects second and drives air intake (5), supercharge pump (3) connects respectively Y type oil absorption filter (17) and retaining valve (18), Y type oil absorption filter (17) is connected with water tank (2), water tank (2) one sides are provided with liquid level gauge (19), water tank (2) bottom is provided with tapping valve (20), tapping valve (20) connects water tank leakage fluid dram (21), retaining valve (18) connects gas control normally open valve (22), gas control normally open valve (22) connects the first solenoid valve (8) and pressure retaining valve (23), pressure retaining valve (23) connects gas control normally close valve (24) and blowdown valve (25), gas control normally close valve (24) and blowdown valve (25) parallel connection and gas control normally close valve (24) and blowdown valve (25) are all connected water tank leakage fluid dram (21), the second solenoid valve (9) connects gas control normally close valve (24), pressure transducer (6) connects respectively pressure retaining valve (23), gas control normally close valve (24) and blowdown valve (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110227651.0A CN102323158B (en) | 2011-08-10 | 2011-08-10 | High pressure safety valve detection system |
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| CN201110227651.0A CN102323158B (en) | 2011-08-10 | 2011-08-10 | High pressure safety valve detection system |
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| CN102323158A CN102323158A (en) | 2012-01-18 |
| CN102323158B true CN102323158B (en) | 2014-06-11 |
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Effective date of registration: 20151030 Address after: 100035 Beijing City, Xicheng District Xizhimen South Street No. 16 Building No. two hospital east building three floor Patentee after: HYDROSYS CORPORATION Address before: 266071 Shandong city of Qingdao province Ningxia City Road No. 116 Patentee before: Gong Ningfeng |