CN101701966B - Jet ignition experiment device and test method - Google Patents
Jet ignition experiment device and test method Download PDFInfo
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- CN101701966B CN101701966B CN2009102160112A CN200910216011A CN101701966B CN 101701966 B CN101701966 B CN 101701966B CN 2009102160112 A CN2009102160112 A CN 2009102160112A CN 200910216011 A CN200910216011 A CN 200910216011A CN 101701966 B CN101701966 B CN 101701966B
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- oil bottle
- solenoid valve
- nozzle
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Abstract
The invention relates to a jet ignition experiment device and a test method. The jet ignition experiment device mainly consists of a high-pressure gas cylinder, an oil bottle, a jet cavity and a jet nozzle. The jet cavity is connected with the oil bottle, the jet cavity is internally provided with a piston, one end of the piston is connected with the high-pressure gas cylinder, and the other end is connected with the jet nozzle. When the jet ignition experiment device is used for testing, fluid is injected into the jet cavity by controlling the opening and the closing of an electromagnetic valve which is arranged between the jet cavity and the oil bottle, N2 in the high-pressure gas cylinder is controlled by controlling the opening and the closing of the electromagnetic valve to push the piston arranged in the jet cavity, wherein one end of the piston, which contact the high-pressure gas cylinder, is provided with a scale bar, and the flow of the fluid jetted in the current time is determined by judging the position of the scale bar at the tail end of the piston before and after jetting the fluid. In the invention, the N2 is used as the power source, the oil bottle is preloaded with the pressure of 1 MPa, and the fluid automatically flows to the jet cavity for supplementing. The jet ignition experiment device can be used in any place and fully automatically and sensitively controlled, has simple structure and long service life and can test effectively.
Description
Technical field
The present invention relates to a kind of jet ignition experiment device and method of testing, this device and method can be measured the initial velocity that fluid goes out from nozzle ejection and the average discharge of injection, provide an experiment porch for developing long-range jet ignition device, also be applicable to the test case of other atomizing of liquids such as fire-fighting lance.
Background technology
In Process of Oil Well Drilling, cause taking place blowout or other resident fluid overflows because misoperation or bottomhole wellbore pressure are excessive etc., cause inflammable gas or liquid to diffuse to ground, the situation of driller's life and near resident's life security occurs jeopardizing from the shaft bottom.After blowout 15min took place, as still can't the kill-job success, then requiring must open flow, otherwise contains H
2Poisonous and harmful inflammable gass such as S will be constantly to diffusion all around; A large amount of inflammable gass spray from well head behind the blowout out of control in addition, if in time do not handle, can diffuse to form steam cloud in air.Just need carry out ignition process in this case to the combustible fluid that the well site relief line emits.The well site sparking mode has artificial and installs two kinds at present.The manual firing is lighted a fire near the rock gas that open flow comes out by the hand-held torch of drilling people, and this mode has great personal safety risk to personnel.The length of flame of installing the general ejection of igniting is a 1-2 rice only, is difficult for lighting the relief line fluid discharged, and general installation is complicated, damages easily.The remote firing at a distance of long-range jet ignition device reduces igniting personnel's igniting danger.When designing long-range jet ignition device, need opposing jet body viscosity, spray fluidised form, the velocity of discharge of injection, range of jet carries out the careful contrast of system, each principal element of analyzing influence range.
The device of measuring the fluid transient jet velocity at present is generally and sensor is set on nozzle wall or flowmeter is installed.The sensor price comparison is expensive, and is subjected to nozzle bore and influence of wall thickness, and measurement sensitivity and nozzle wall shape have confidential relation.The installation of flowmeter itself has just caused influence to a certain degree to original flow morphology, and this method can not simple and effectively obtain a value more accurately.
Summary of the invention
The object of the present invention is to provide a kind of jet ignition experiment device and method of testing, these apparatus and method can be measured the initial velocity that fluid goes out from nozzle ejection and spray once flow, for the development of long-range jet ignition device provides scientific and reliable experimental technique and data.
For reaching above technical purpose, the invention provides following technical scheme.
A kind of jet ignition experiment device, mainly form by gas cylinder, oil bottle, spray chamber, nozzle, it is characterized in that, described spray chamber links to each other with oil bottle, piston is arranged in the spray chamber, and the one end is connected with gas cylinder, and the other end is connected with nozzle, the end that piston contacts with gas cylinder is connected with band scale bar, and nozzle end also is connected with the scale bar.
This device spray chamber between spray chamber and the gas cylinder, between spray chamber and the oil bottle, all has control electromagnetic valve between spray chamber and the nozzle, described control electromagnetic valve is controlled by telepilot.
This device gas cylinder, oil bottle, spray chamber and nozzle all are connected with tensimeter, and the nozzle place is provided with lighter.
When utilizing this device to test, gases at high pressure are drawn from gas cylinder, control N in the gas cylinder by the switching of the solenoid valve that is connected with gas cylinder of control spray chamber
2Promote the piston in the spray chamber.Spray in the oil bottle fluid is housed, at first give and spray the fluid that injects 2/3 volume in the oil bottle, seal oil bottle, in oil bottle, inject the N of 1Mpa pressure then
2Oil bottle is connected with spray chamber, comes to inject fluid to spray chamber by the switching of controlling the solenoid valve between oil bottle and the spray chamber.Piston is installed in the spray chamber.The end that piston contacts with gas cylinder is equipped with the scale bar.Promptly can determine the fluid volume that spray chamber contains by the elongation of judging the scale bar.
A mark post is set in lighter the place ahead every one meter, video camera can photograph the pressure gauge reading and the motion process that sprays fluid of portfire clearly.
Each course of injection is made up of spray chamber injecting jet fluid and two processes of spray chamber ejecting fluid.
The present invention is equipped with tensimeter at spray nozzle front end, and nozzle end is provided with a scale bar.During injection, high-speed camera an other end clearly recording manometer reading and spray flow morphology or the flame forms of fluid after the nozzle ejection.After the acquisition of image data, on computers the time of the timer shows of analysis spraying fluid image and photographic images, promptly can calculate and spray the initial velocity of fluid from nozzle.
The average velocity that sprays fluid calculates and can be determined by the ratio of injection flow and injecting time.The change in location of piston tail scale bar can be determined the Fluid Volume of this time injection before and after judgement was sprayed; Continue the shooting that injecting time can be by analyzing high-speed camera picture accurate draw.
Compared with prior art, the present invention has overcome the defective of prior art, and its beneficial effect is: with high pressure N
2Do power source, 1Mpa pressure is housed in the oil bottle in advance, fluid flows into spray chamber automatically and replenishes, and is not subjected to the restriction in any place, and is simple in structure, and control is sensitive, Automatic Control, and test is effective, long service life.Can obtain data such as expulsion pressure, jet expansion effluxvelocity, jet length by this experimental provision and method, provide effective experimental basis for developing novel remote jet ignition device, raising ignition distance etc.
Description of drawings
Fig. 1 is a jet ignition experiment device structural drawing of the present invention.
Among the figure 1: nozzle end scale bar, 2: lighter, 3: nozzle, 6,8: tensimeter, 4,7,9: connecting pipe, 5: oil bottle, 10: gas cylinder, 11,13,16,17: solenoid valve, 12: spray chamber scale bar, 14: piston, 15: spray chamber, 18: telepilot.
Fig. 2 is the installation site figure when using this device to test.
Embodiment
Referring to Fig. 1.A kind of jet ignition experiment device, mainly form by gas cylinder 10, oil bottle 5, spray chamber 15, nozzle 3, it is characterized in that, described spray chamber 15 links to each other with oil bottle 5 by connecting pipe 7, piston 14 is arranged in the spray chamber, and the one end links to each other with gas cylinder 10 by connecting pipe 9, and the other end links to each other with nozzle 3 by connecting pipe 4, the end that piston 14 contacts with gas cylinder 10 is connected with scale bar 12, and nozzle end is connected with scale bar 1.
This device spray chamber between spray chamber and the gas cylinder, between spray chamber and the oil bottle, all has control electromagnetic valve 13,11,16,17 between spray chamber and the nozzle, described control electromagnetic valve is by telepilot 18 controls.
This device gas cylinder, oil bottle are connected with tensimeter 6,8, and the nozzle place is provided with lighter 2.
This device spray chamber is a cylindrical cavity, and piston diameter is 70mm, and spray chamber length is 20cm.
The method of testing of this jet ignition experiment device may further comprise the steps successively:
(1) closes solenoid valve 13,11,16,17, in oil bottle 5, inject the test be no more than volume 2/3 and spray fluid (oil, water or gasoline, diesel potpourri etc., and write down its viscosity number) by rotational viscosimeter, shut oil bottle, inject 1Mpa high pressure N from oil plant bottle top to oil bottle
2, the sealing oil bottle;
(2) fill with 4Mpa high pressure N to gas cylinder 10
2, the good seal gas cylinder;
Check the pressure gauge reading in gas cylinder exit after this step, and testing fixture integral body has or not gas to leak, this moment, the pressure gauge reading of gas cylinder end should be 4Mpa, and the reading of oil bottle end should be 1Mpa.If have gas to leak, take measures to reseal.
(3) utilize telepilot 18 opens solenoid valve 16 and 13, the interior fluid of oil bottle this moment injects spray chamber under the effect of pressure, when chamber to be sprayed tail end scale bar is no longer mobile, close solenoid valve 16 and 13, and this moment, the reading of spray chamber tail end scale bar was L
11
(4) continue to take spray nozzle front end tensimeter 4 and nozzle end scale bar 1 with video camera;
Referring to Fig. 2, a mark post is set in lighter the place ahead every one meter, video camera can photograph the pressure gauge reading and the motion process that sprays fluid of portfire clearly.
(5) utilize telepilot 18 opens solenoid valve 11 and 17, in spray chamber, inject high pressure N
2, spray, spray finish after, this moment spray chamber tail place reading L
12
Lighting a fire if desired during this step lighter to be connected with electric control gear gets final product, and presses the button of opening solenoid valve 11 and 17 and just allows lighter begin to carry out ignition operation simultaneously.
(6) spray chamber is a cylindrical cavity, and piston diameter is d, after injection is finished, can calculate the Fluid Volume Q that once sprays by following formula:
(7) analyze the video recording that photographs, record sprays and continues T.T. T
1, record sprays fluid and sprays the back at scale bar 100cm time of occurrence T from nozzle
2, calculate jet velocity by following formula:
Spray average velocity:
Jet expansion speed:
The present invention determines the flow of this time injection by judging the change in location of spraying front and back piston tail scale bar; The picture accurate ground of the shooting by analyzing high-speed camera draws lasting injecting time, the injection fluid pressure value of spraying transient state draws by the picture that high-speed camera writes down, and goes into the instantaneous velocity of airborne fluid or flame from nozzle ejection and analyzes by the picture of analyzing the high-speed camera record.
Can obtain following experimental data by this experimental provision and method: spray fluid viscosity, nozzle arrangements, expulsion pressure, jet expansion effluxvelocity, the jet length of not lighting a fire, the jet form of not lighting a fire, igniting jet jet length etc.By repeatedly experiment, can draw under parameters such as different incendiary agent viscosity, nozzle arrangements, expulsion pressure change, to the rule that influences of effluxvelocity, jet form, igniting and the jet length of not lighting a fire, thereby provide effective experimental basis for developing novel remote jet ignition device, raising ignition distance etc.
Claims (6)
1. jet ignition experiment device, mainly form by gas cylinder (10), oil bottle (5), spray chamber (15), nozzle (3), it is characterized in that, described spray chamber (15) links to each other with oil bottle (5) by connecting pipe (7), piston (14) is arranged in the spray chamber, the one end links to each other with gas cylinder (10) by connecting pipe (9), the other end links to each other with nozzle (3) by connecting pipe (4), the end that piston (14) contacts with gas cylinder (10) is connected with spray chamber tail end scale bar (12), and nozzle end also is connected with scale bar (1); First solenoid valve (11), second solenoid valve (13) are arranged between described spray chamber and the gas cylinder, the 3rd solenoid valve (16) is arranged between spray chamber and the oil bottle, the 4th solenoid valve (17) is arranged between spray chamber and the nozzle, described solenoid valve is controlled by telepilot (18).
2. jet ignition experiment device as claimed in claim 1 is characterized in that, described oil bottle, gas cylinder are connected with first tensimeter (6), second tensimeter (8) respectively.
3. jet ignition experiment device as claimed in claim 2 is characterized in that, described nozzle place is provided with lighter (2), and described lighter is controlled by telepilot (18).
4. jet ignition experiment device as claimed in claim 1 is characterized in that, described spray chamber is a cylindrical cavity, and piston diameter is 70mm, and spray chamber length is 20cm.
5. the method for testing of device as claimed in claim 1 may further comprise the steps successively:
(1) close first, second, third, fourth solenoid valve (11,13,16,17), fluid is sprayed in injection test in oil bottle (5), shuts oil bottle, injects 1Mpa high pressure N from the oil bottle top to oil bottle
2, the sealing oil bottle;
(2) fill with 4Mpa high pressure N to gas cylinder (10)
2, the sealed high pressure gas cylinder;
(3) open the 3rd solenoid valve (16) and second solenoid valve (13), the oil bottle inner fluid is injecting jet chamber (15) under pressure, when chamber to be sprayed tail end scale bar is no longer mobile, close the 3rd solenoid valve (16) and second solenoid valve (13), this moment, the reading of spray chamber tail end scale bar was L
11
(4) continue to take spray nozzle front end tensimeter and nozzle end scale bar (1) with video camera;
(5) open first solenoid valve (11) and the 4th solenoid valve (17), in spray chamber, inject high pressure N
2, to spray, after injection was finished, the reading at spray chamber tail place was L
12
(6) spray chamber is a cylindrical cavity, and piston diameter is d, after injection is finished, calculates the Fluid Volume Q that once sprays by following formula:
(7) analyze the video recording that photographs, record sprays and continues T.T. T
1, record sprays fluid arrives nozzle end scale bar 100cm from nozzle ejection back time T
2, calculate jet velocity by following formula:
Spray average velocity:
Jet expansion speed:
6. method of testing as claimed in claim 5 is characterized in that, the described injection fluid of step (1) is a water, gasoline, diesel oil, or gasoline, diesel potpourri.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102160112A CN101701966B (en) | 2009-10-28 | 2009-10-28 | Jet ignition experiment device and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102160112A CN101701966B (en) | 2009-10-28 | 2009-10-28 | Jet ignition experiment device and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101701966A CN101701966A (en) | 2010-05-05 |
| CN101701966B true CN101701966B (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102160112A Expired - Fee Related CN101701966B (en) | 2009-10-28 | 2009-10-28 | Jet ignition experiment device and test method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313575B (en) * | 2011-08-20 | 2013-03-20 | 公安部天津消防研究所 | Oil spray fire test device |
| CN103364661A (en) * | 2013-07-09 | 2013-10-23 | 镇江恒驰科技有限公司 | Device for testing performance of natural gas injection electromagnetic valve and testing method of device |
| CN108872734A (en) * | 2018-04-26 | 2018-11-23 | 首钢京唐钢铁联合有限责任公司 | Blast-furnace gas diffusing tower detecting method, device and equipment |
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