CN201215250Y - Composite electromechanical voltage limiting apparatus for compressed natural gas charging machine - Google Patents
Composite electromechanical voltage limiting apparatus for compressed natural gas charging machine Download PDFInfo
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- CN201215250Y CN201215250Y CNU2008200640629U CN200820064062U CN201215250Y CN 201215250 Y CN201215250 Y CN 201215250Y CN U2008200640629 U CNU2008200640629 U CN U2008200640629U CN 200820064062 U CN200820064062 U CN 200820064062U CN 201215250 Y CN201215250 Y CN 201215250Y
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- pressure
- filling machine
- natural gas
- compressed natural
- pressure limiting
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Abstract
The utility model relates to a composite electromechanical pressure limiter for a compressed natural gas dispenser, which relates to the technical field of compressed natural gas dispensers. The composite electromechanical pressure limiter aims to resolve the existed technical problems for the CNG dispenser, such as pressure-limiting defects, hidden dangers and the like. The composite electromechanical pressure limiter comprises a microcontroller 15, a pressure sensor transmitter 3, a mass flow-meter sensor 9 and a high pressure pipeline 12 located inside the dispenser, wherein the pressure sensor transmitter 3 and the mass flow-meter sensor 9 are communicated with the high pressure pipeline 12, one input end of the microcontroller 15 is connected with the pressure sensor transmitter 3 through a data signal wire, one output end is connected with an electromagnetic electric valve assembly 16 through a data signal control line, and the high pressure pipeline 12 is provided with a mechanical regulating valve 8. The utility model is adaptable to the manufacturing field of CNG dispensers and safety pressure-limiting filling equipment.
Description
Technical field
The utility model relates to compressed natural gas filling machine technical field, especially for the compound dynamo-electric pressure limiting charging device of compressed natural gas filling machine.
Background technique
Compressed natural gas filling machine (hereinafter to be referred as " CNG filling machine ") is to be used for measurement instrument to the CNG automobile inflating.Because of conventional CNG gas station compressor or CNG gas cartridge storehouse exporting to the rated high voltage of CNG filling machine for being not more than 25Mpa, the rated working pressure of CNG automobile gas cartridge is 20Mpa, so the termination pressure that the CNG filling machine fills end for such CNG automobile can only be to be not more than 20Mpa.The qualified CNG filling machine of country's CNG filling machine product standard standard must have the pressure limiting of filling function.The CNG filling machine has had process about 15 years in China's research and development application, and it fills the development that the pressure limiting technical approach also is accompanied by the product technology progress and has gone through following several typical technical approach:
1. manually pressure limiting fills mode: this mode is by operation manually, and implementation is simple, and cost is low, but random big, not manageability, so potential safety hazard is big, is eliminated.
2. the pressure limiting of pressure gauge with electric contact switch fills mode: this mode drives the electrical contact switch of predeterminable pressure by pressure process fluid, and controls electromagnetism mortor operated valve executable operations by closed electrical contact switch and carry out pressure limiting.This mode than first kind of technical approach further, but nonlinear characteristics because of the work of electromagnetism mortor operated valve switch, it is big that its process-liquid step surge superpressure is impacted, easy oxidation of electric contact simultaneously or corrosion, and the uncertainty of tube side pressure reduction variation etc., cause its pressure limiting poor stability, it is big and unreliable to fluctuate, and also is eliminated in succession.
3. the pressure limiting of mechanical adjustment valve fills mode: this mode is by the operation pressure limiting of pressure process fluid driving device modulating valve actuator.The characteristics that it utilizes default voltage limiting value of its valve spring mechanism can regulate and the compression coefficient of stiffiness gradual change of its valve spring mechanism to become little, and the wide advantage of temperature applicable range realize that its expection and the pressure limiting of not having superpressure reliably and with long-term fill.Its typical feature is, have the impact of process of inhibition fluid step surge superpressure and suppress the characteristics that superpressure is out of control and resistance to high temperature is good long-term safe in utilization steadily reliable, but single electric and electronicization and the stable source of the gas benchmark of voltage limiting value setting needs of being difficult for of its mode tradition has the characteristics of process choke pressure drop simultaneously.
4. the pressure limiting of pressure sensing transmitter fills mode: it is the technical approach that modern filling machine generally uses, it has realized that the isolation of pressure process fluid safety is converted to analog electric signal, it is fast to have response, the purpose that is easy to gather digitizing and the sequencing processing of realization micro controller and reaches optimization control.This technical approach is to integrate Modern Transducer Technology and micro controller and digital communication technology, realize the advanced mode that pressure limiting fills, also be the standard mode of national filling machine production standard, but the potential safety hazard that this technical approach field engineering that its product standard of objective reality can not contain in application is used.The pressure sensing transmitter is influenced by the non-linear step line of CNG filling machine high pressure body frequent impact operating mode and the big acting in conjunction of CNG gas station makings temperature variation, its shock resistance is weakened, zero drift is big, the pilot pressure instability, pressure limiting is forbidden to cause the termination pressure that fills to the CNG automobile, and super large is a lot of often, and potential safety hazard is serious.The on-the-spot case of one of hidden danger fault: the makings temperature of CNG gas station is implicit when undesired at cooling system and manufacturing equipment thereof, and its CNG makings temperature can reach more than 110 ℃, far super its normal scope of using about 40 ℃ of CNG makings temperature.This situation often makes the industrial pressure sensing transmitter of 85 ℃ of temperature limits impaired or downright bad, directly exists to cause pressure limiting to fill the one side of superpressure out of control.And CNG gas station superpressure fills the bottle explosion lesson written in blood and does not allow many superpressures to fill.Secondly, it is big promptly to be that the non-linear step superpressure of process-liquid is impacted, and forms the high voltage surge fluid, makes the gas cartridge that is difficult for scenting a hidden danger easily happen suddenly explosion or blast, does not still allow many superpressures once to fill in the safety standard of high-risk place CNG gas station.This shows that still there is pressure limiting safety defect hidden danger in this kind voltage limiting mode.
Summary of the invention
The utility model is intended to solve the CNG filling machine and has technical problems such as pressure limiting safety defect hidden danger, so that a kind of compound dynamo-electric pressure limiting charging device of compressed natural gas filling machine with high reliability, Security, accuracy to be provided.
The purpose of this utility model is achieved through the following technical solutions.
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, comprise micro controller 15, pressure sensing transmitter 3, mass flow rate flowmeter sensor 9 and be positioned at the pressure duct 12 of filling machine inside, wherein pressure sensing transmitter 3, mass flow rate flowmeter sensor 9 are connected with pressure duct 12, input end of micro controller 15 and pressure sensing transmitter 3 are connected by data signal line, an one output terminal is connected with electromagnetism mortor operated valve assembly 16 by the data-signal guide line, and pressure duct 12 is provided with mechanical adjustment valve 8.
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, wherein mechanical adjustment valve 8 is arranged on the pressure duct 12 that is connected with mass flow rate flowmeter sensor 9 inlet opening ends.
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, wherein pressure sensing transmitter 3 is installed in pressure duct 12 delivery outlet ends.
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, wherein pressure sensing transmitter 3 air inlet ports can be installed become greater than the scope of 0 degree smaller or equal to 90 degree with horizontal plane in, and it is vertical to recommend with ground.
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, wherein mechanical adjustment valve 8 is as the criterion with main valve body, can install in 0～360 degree scope.Recommend following two kinds of mounting types:
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, wherein mechanical adjustment valve 8 is installed with the main valve body level that is as the criterion.
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, wherein mechanical adjustment valve 8 is as the criterion with main valve body and vertically install on ground.
The compound dynamo-electric pressure limiting device beneficial effect of the utility model compressed natural gas filling machine:
1. anti-process-liquid step surge superpressure is impacted, and avoids superpressure out of control;
2. resistance to high temperature is good;
3. response is fast;
4. can realize that the micro controller sequencing handles automatically.
Description of drawings
Fig. 1 adopts the compressed natural gas filling machine plan view of compound dynamo-electric pressure limiting charging device
Fig. 2 adopts the compressed natural gas filling machine right elevation of compound dynamo-electric pressure limiting charging device
Fig. 3 adopts the compressed natural gas filling machine air-channel system figure number in the figure explanation of compound dynamo-electric pressure limiting charging device: 1 charge gun joint; 2 charge guns hook; 3 pressure sensing transmitters; the 4LCD display device; 5 bill printers; 6 high-pressure ball valves; 7 explosion-proof electrical source relay boxes; 8 mechanical adjustment valves; 9 mass flow rate flowmeter sensors; 10 shock-proof pressure gauges; 11 reset switches; 12 pressure ducts; 13 keyboard IC-cards; 14 nameplate/cautions; 15 micro controller; 16 electromagnetism mortor operated valve assemblies; 17 explosion-proof electrical source leading-in boxs; 18 flowmeter transmitters; 19 air intake filters; 20 safety relief valves; 21 high-pressure pipes; 22 one-way valves; 23 header four-ways; 24 break Protective valve; 25 high-pressure aerated flexible pipes; 26 two-bit triplet ball valves; 27 filling gas mouths; 28 exhausting silencer heads
Embodiment
The utility model detailed structure, application principle, effect and effect with reference to accompanying drawing 1-3, are illustrated by following mode of execution.
Consult shown in Fig. 1-3, the compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, comprise micro controller 15, pressure sensing transmitter 3, mass flow rate flowmeter sensor 9 and the pressure duct 12 that is positioned at filling machine inside, wherein the pressure sensing transmitter 3, mass flow rate flowmeter sensor 9 is connected with pressure duct 12, input end of micro controller 15 and pressure sensing transmitter 3 are connected by data signal line, an one output terminal is connected with electromagnetism mortor operated valve assembly 16 by data signal line, and mechanical adjustment valve 8 is arranged on the pressure duct 12 that is connected with mass flow rate flowmeter sensor 9 inlet opening ends.
The composition of micro controller 15 and peripheral hardware thereof constitutes the Multi task real time processing system, and it is the mass flow rate equivalent signal of real-time acquisition quality flowmeter sensor 9 not only, directly shows that in order to the scene meterage and communication data are handled and mutual control and management; By the fluid signal of the compound dynamo-electric pressure limiting process of pressure sensing transmitter 3 real-time collecting treatment, control utilizes mechanical adjustment valve 8 and electromagnetism mortor operated valve assembly 16 to realize compound dynamo-electric pressure limiting function and control and management filling machine simultaneously.Pressure sensing transmitter 3 is installed on the interior pressure duct 12 of CNG filling machine, and it is terminal to recommend single rifle filling machine pressure sensing transmitter 3 to be installed in the outlet of filling machine output pipeline as far as possible, reduces exterior tube and presses journey to influence.Installation position requires pressure sensing transmitter 3 air inlet ports straight down, can remove the hydrops dirt, avoids influencing its reliably working.Mechanical adjustment valve 8 is installed on the interior pressure duct 12 of CNG filling machine; recommend mechanical adjustment valve 8 to be installed in mass flow rate flowmeter sensor 9 inlet opening ends; its installation position is as the criterion with main valve body; both but level was installed; also can install straight down; make its installation be beneficial to the 9 steadily meterings of protection mass flow rate flowmeter sensor, but process of inhibition fluid step superpressure is impacted simultaneously.The installation principle of the above-mentioned same assembly of rush-harvesting and rush-planting CNG filling machine is with single rifle, and promptly every part of two groups of separate single rifles comprises that mechanical adjustment valve 8 and pressure sensing transmitter 3 all are installed in the same casing symmetrically.
Begin to finish automatically from CNG filling machine controlled starting or default startup aerating to aerating, mechanical adjustment valve 8 and pressure sensing transmitter 3 compound actions are regulated shaping gatherer process fluid signal in the whole process, handle in real time and multi-parameters such as the flow of optimizing process fluid signal, time, pressure, pressure journey, temperature become the result again by micro controller 15, drive controlled electromagnetism mortor operated valve assembly 16, the final purpose that realizes safe pressure limiting automatically.Whole process need not human intervention, finishes fully automatically.
The compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model is realized principle: utilize mechanical adjustment valve 8 to have process of inhibition fluid step surge superpressure is impacted and the compression coefficient of stiffiness gradual change of valve body setting spring mechanism becomes little characteristic and resistant to elevated temperatures characteristics, it is fast that signal response is specially changed in absorption pressure sensing transducer 3 safety isolation simultaneously, easily gather, the complementary advantage of easy to control and easy realization micro controller 15 program optimization technical finesse characteristics reaches the CNG filling machine gas replenishment process safety of steadily boosting and fills and the reliable purpose of pressure limiting standard.
Therefore, adopt the compound dynamo-electric pressure limiting device of compressed natural gas filling machine of the present utility model, fill the safety defect hidden danger except that solving the pressure limiting of original CNG filling machine, have simultaneously that resistance to high temperature is good, response is fast, can realize micro controller sequencing plurality of advantages such as processing automatically.This main technique extension has been innovated the new mode new technology that the pressure limiting of CNG filling machine fills, not only improved the pressure limiting of CNG filling machine and filled the reliability level of technology and the reliability that CNG gas station safety fills, and replenished and perfect national CNG filling machine standard specification pressure limiting fills the technical requirements that engineering is used.This technology novel practical, the cost performance height in public high-risk CNG gas station environment and safe pressure limiting filling equipment manufacturing etc., has more good social safety benefit and the economic benefit of applying.
Claims (6)
1. compound dynamo-electric pressure limiting device of compressed natural gas filling machine, comprise micro controller (15), pressure sensing transmitter (3), mass flow rate flowmeter sensor (9) and be positioned at the pressure duct (12) of filling machine inside, it is characterized in that: pressure sensing transmitter (3), mass flow rate flowmeter sensor (9) is connected with pressure duct (12), an input end of micro controller (15) is connected by data signal line with pressure sensing transmitter (3), an one output terminal is connected with electromagnetism mortor operated valve assembly (16) by the data-signal guide line, and pressure duct (12) is provided with mechanical adjustment valve (8).
2. the compound dynamo-electric pressure limiting device of compressed natural gas filling machine as claimed in claim 1 is characterized in that: described mechanical adjustment valve (8) is arranged on the pressure duct (12) that is connected with mass flow rate flowmeter sensor (9) inlet opening end.
3. the compound dynamo-electric pressure limiting device of compressed natural gas filling machine as claimed in claim 1 is characterized in that: described pressure sensing transmitter (3) is installed in pressure duct (12) delivery outlet end.
4. the compound dynamo-electric pressure limiting device of compressed natural gas filling machine as claimed in claim 1 is characterized in that: described pressure sensing transmitter (3) air inlet port and ground are vertical.
5. the compound dynamo-electric pressure limiting device of compressed natural gas filling machine as claimed in claim 1 is characterized in that: described mechanical adjustment valve (8) is installed with the main valve body level that is as the criterion.
6. the compound dynamo-electric pressure limiting device of compressed natural gas filling machine as claimed in claim 1 is characterized in that: described mechanical adjustment valve (8) is as the criterion with main valve body and vertically install on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200640629U CN201215250Y (en) | 2008-07-02 | 2008-07-02 | Composite electromechanical voltage limiting apparatus for compressed natural gas charging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200640629U CN201215250Y (en) | 2008-07-02 | 2008-07-02 | Composite electromechanical voltage limiting apparatus for compressed natural gas charging machine |
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| Publication Number | Publication Date |
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| CN201215250Y true CN201215250Y (en) | 2009-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200640629U Expired - Fee Related CN201215250Y (en) | 2008-07-02 | 2008-07-02 | Composite electromechanical voltage limiting apparatus for compressed natural gas charging machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679145A (en) * | 2012-06-11 | 2012-09-19 | 成都华气厚普机电设备股份有限公司 | High-energy compressed natural gas (CNG) filling device and gas filling method |
| CN103591332A (en) * | 2013-11-04 | 2014-02-19 | 浙江蓝邦控制系统有限公司 | CNG integrated control valve |
-
2008
- 2008-07-02 CN CNU2008200640629U patent/CN201215250Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679145A (en) * | 2012-06-11 | 2012-09-19 | 成都华气厚普机电设备股份有限公司 | High-energy compressed natural gas (CNG) filling device and gas filling method |
| CN103591332A (en) * | 2013-11-04 | 2014-02-19 | 浙江蓝邦控制系统有限公司 | CNG integrated control valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20110702 |