CN103383046A - Heating method and device for pilot pressure regulating valve - Google Patents
Heating method and device for pilot pressure regulating valve Download PDFInfo
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- CN103383046A CN103383046A CN2012101370469A CN201210137046A CN103383046A CN 103383046 A CN103383046 A CN 103383046A CN 2012101370469 A CN2012101370469 A CN 2012101370469A CN 201210137046 A CN201210137046 A CN 201210137046A CN 103383046 A CN103383046 A CN 103383046A
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Abstract
The invention provides a heating method and device for a pilot pressure regulating valve of a compressed natural gas pilot operated relief valve director. The device adopts the structure that a pipeline, which is arranged between an emergency cut off valve (3) and a pilot operated control valve (1), is divided into two ways, wherein one way is connected with a two-channel pilot gas fuel heater (9) through a pilot gas inlet ball valve (8), and the other way is connected with the two-channel pilot gas fuel heater (9) through an eddy current loop (6); the pilot operated control valve (1) and a pilot pressure regulating valve (2) are connected with an air outlet in sequence, the director I (4) and director II (5) of the pilot operated control valve (1) and the pilot pressure regulating valve (2) are connected together and are then connected with a heating loop (10) and a heating loop (11) of the two-channel pilot gas fuel heater (9) respectively; the two-channel pilot gas fuel heater (9) is connected with the air outlet through a VTGH outlet ball valve (7). The device provided by the invention has no moving part, is maintenance-free, and higher in reliability, needs no power, and has better safety performance.
Description
Technical field
The present invention is a kind of heating means and device of leading type pressure regulator valve of compressed natural gas leading type pressure regulator valve pilot valve.Relate to valve, the fluid heater that generally has thermal source, heat exchange and pipe-line system technical field.
Background technique
Along with the continuous lifting of national economy, domestic every profession and trade is also growing with each passing day to the demand of rock gas.Utilizing the high pressure gas pipeline transport gas, is the sole mode of a large amount of transport gas in land, carry for the long distance of rock gas, and be all generally to adopt high pressure pipe line, pressure is up to 8-10MPa.Natural gas user mainly can be divided into industrial user and domestic consumer, these users are usually in the city, for the facility of urban safety and user's use, after natural gas via is carried by the high pressure long distance pipeline, urban subscriber's conveying downstream after needing to process through step-down.In the natural gas transport process, can adjoin each urban construction Natural Gas Station field along long defeated high pressure pipe line, the task of Natural Gas Station field is exactly the demand according to downstream user, the pressure decreased of rock gas to 1-2MPa, in even lower safety pressure scope, then divide and be defeated by downstream user.Therefore, the Natural Gas Station field is requisite connecting link between rock gas seedbed and terminal use.
At present, domestic Natural Gas Station field is all adopted sledge formula pressure governor to carry out pressure to pressurized gas and is regulated, and the pressure regulation sledge mainly contains three parts and consists of: Emergeny Cutoff Valves, electric pressure-regulating valve and monitor valve.Emergeny Cutoff Valves mainly works to ensure Gas Stations safety, and emergency cut-off source of the gas when unexpected the generation arranged prevents that the disaster such as detonate on fire from occuring; Pressure regulator valve is take the leading type pressure regulator valve as main, and its effect is the safety pressure scope that the pressure decreased from the high-pressure natural gas in high-pressure gas pipe road is required to downstream user; Monitor valve is the gas pressure of monitoring after the pressure regulator valve step-down; usually can set a monitoring value according to the Production requirement of downstream user; when the gas pressure after step-down is worth lower than this; monitor valve is not had an effect; when gas downstream pressure has surpassed setting value; monitor valve is with autoshutdown, to ensure the safety of gas downstream pipeline.
Three step valve gate controls of sledge formula pressure adjusting structure are when realizing that gas pressure is regulated, safety that can also the effective guarantee downstream user, but pressurized gas via electric pressure-regulating valve after, its pressure reduces rapidly, " joule-Thomson " effect (also referred to as " throttle effect ") will occur, namely along with suddenly the falling of pressure, gas temperature will sharply reduce.In the Gas Stations actual motion, gas is before and after the step-down of pressure regulation sledge, and the temperature difference can reach more than 10 ℃.Because rock gas mainly is comprised of short hydrocarbon, the existence of a small amount of moisture makes rock gas form mixture of ice and water lower than 0 ℃ the time, causes " ice is stifled " of leading type pressure regulator valve and gas downstream transfer line." ice is stifled " not only can affect the normal production run of Gas Stations, but also is the major safety risks of Gas Stations and gas downstream transfer line.In order to eliminate " ice stifled ", currently used method is mainly physical heating, as electric-heating belt being installed on pressure regulation sledge equipment, being adopted the hot water sleeve pipe to the downstream line heating etc.But these physical heating methods can not fundamentally be eliminated " ice is stifled " hidden danger, also can consume a large amount of energy.Therefore, be necessary to develop and a kind ofly be specifically applied to Natural Gas Station field voltage adjusting device, and have the heating technology of environmental protection, the advantage such as energy-conservation, thoroughly eliminate " ice the is stifled " phenomenon that produces in the pressure regulation process.
Summary of the invention
The objective of the invention is to invent a kind of movement-less part, non-maintaining, have higher reliability, do not need power supply, have heating means and the device of the leading type pressure regulator valve of Good Security.
The present invention is based on vortex tube energy separation technology, make a small amount of pressurized gas eddy current guide combustion heater (VTGH) of flowing through, utilize vortex tube to the pressurized gas step-down, simultaneously pressure reduction can be converted to heat energy, and utilize this heat energy heating guide combustion gas, thereby eliminate pilot valve decompression " ice the is stifled " problem of leading type pressure regulator valve.At present, domestic Natural Gas Station field is all adopted sledge formula structure to carry out pressure to high-pressure natural gas and is regulated, then flow to downstream user, in the pressure adjustment process, " throttle effect " is inevitable, therefore in temperature lower season, " throttle effect " causes that very easily " ice is stifled " phenomenon occurs a station regulator." ice is stifled " impact station normal production and operation on the one hand is also major safety risks on the other hand.For the problems referred to above, invent effective equipment " ice the is stifled " phenomenon of eliminating because " throttle effect " causes of a kind of device.This installs movement-less part, non-maintaining, has higher reliability; Secondly, do not need electric equal energy source, can exempt the equivalent risk that detonates on fire, have good Safety performance.This device can eliminate in the application of Gas Stations the potential safety hazard that causes because of " ice is stifled " phenomenon.
The long defeated Natural Gas Station of the high pressure that relates in the present invention field sledge formula regulator divides between the suction port at defeated station and exit at high-pressure natural gas to be connected in series successively Emergeny Cutoff Valves 3, leading type monitor valve 1 and leading type pressure regulator valve 2 as shown in Figure 1; Take the suction port of Natural Gas Station field as before, the pilot valve pilot valve 4 of leading type monitor valve 1 connects the pipeline before leading type monitor valve 1, pick out again exit simultaneously with after the pilot valve pilot valve 5 of leading type pressure regulator valve 2 is connected, and the front pipeline of the pilot valve pilot valve 5 of leading type pressure regulator valve 2 and leading type pressure regulator valve 2 is connected.In Fig. 1, P1 and P3 are respectively suction pressure and the departures pressure that high-pressure natural gas divides field, defeated station, and the size of P1 depends on the discharge pressure of upstream line, and P3 sets according to the downstream user demand.P1 and P3 are not fixed values, usually can be a metastable interval fluctuation.Sledge formula regulator working principle is as follows:
At first, according to the downstream user demand, the pressure P 2 capping values after leading type monitor valve 1, in sledge formula regulator, under normal circumstances, operating valve is the pipeline air feed downstream, because its setting value is higher, so leading type monitor valve 1 is in complete opening state always.In case leading type pressure regulator valve 2 breaks down or because of other reason, P2 raises, when being increased to the pressure set points of leading type monitor valve 1, leading type monitor valve 1 is taken over leading type pressure regulator valve 2 and is carried out pressure regulation, and the P2 of this moment is the given pressure of a little higher than client at short notice.Leading type pressure regulator valve 2 is called again operating valve, be in sledge formula regulator to the device of P1 step-down, according to the size of P1 and P2, leading type pressure regulator valve 2 is regulated its aperture automatically, to realize safety adjustable-pressure.Emergeny Cutoff Valves 3 is called again safety cut-off valve, it is the safe match equipment that generally adopts in the gas pipeline engineering, Main Function is by the ZCR gas emergency cut-off valve is set, can be in the indoor centralized control of center-control, when dangerous or other urgency occurring, the pipeline air feed of Remote emergency cut-off scene of the accident.Usually Emergeny Cutoff Valves 3 is open type pulse trigger type type solenoid valves, has accident self-locking and hand reset function.
The heating means of leading type pressure regulator valve as shown in Figure 2.It is: will originally should be incorporated into via the high-pressure natural gas of leading type pressure regulator valve 2 in guide's combustion heater 9, gas can be converted into heat energy, cold energy with the pressure reduction between P1 and P3 in step-down in guide's combustion heater 9, namely the original energy that transforms in leading type pressure regulator valve 2 is shunted, transforms, separated, in this conversion and separation energy process, cold energy is compared with the cold of pipeline itself, it is a very little part, the downstream line of can directly releasing, and the energy of heat is accumulated in guide's combustion heater 9.First air guide enters in guide's combustion heater 9 through first air guide entrance ball valve 8, with the hot gas generation heat exchange in guide's combustion heater 9, the pilot gas temperature is raise, form heating circuit, respectively pilot valve pilot valve I 4 and pilot valve pilot valve II 5 are heated via leading type monitor valve pilot valve heating circuit 10 and leading type pressure regulator valve pilot valve heating circuit 11, reach " ice is stifled " phenomenon that elimination pilot valve pilot valve I 4 and pilot valve pilot valve II 5 produce because of " throttle effect ".
The present invention's device used is: be connected in series successively Emergeny Cutoff Valves 3, leading type monitor valve 1 and leading type pressure regulator valve 2 between the long defeated natural gas transmission pipeline suction port of high pressure and air outlet; There is a pipeline to connect Twin channel guide combustion heater 9 through 8 minutes two-way of first air guide entrance ball valve between Emergeny Cutoff Valves 3 and leading type monitor valve 1, separately has one the tunnel 6 directly to receive in Twin channel guide combustion heater 9 through the eddy current loop; Leading type monitor valve 1 and leading type pressure regulator valve 2 air outlet that is connected successively, the leading type monitor valve 1 pilot valve I 4 of being connected with the leading type pressure regulator valve is connected heating circuit 10 and the heating circuit 11 that connects separately Twin channel guide combustion heater 9 with pilot valve II simultaneously; The pilot valve I 4 of leading type monitor valve 1 and leading type pressure regulator valve 2 with pick out gas port after pilot valve II 5 is connected; Twin channel guide's combustion heater 9 picks out gas port through VTGH vent ball valve 7.
On the structure of device, be the equal of that one tunnel shunting means that contains Twin channel guide combustion heater 9 has been installed in sledge formula regulator (placing in turn Emergeny Cutoff Valves 3, leading type monitor valve 1 and leading type pressure regulator valve 2 between suction port and air outlet) bypass in Gas Stations, additional shunting means does not change former sledge formula structure, only plays the effect of heating pilot valve I 4 and pilot valve II 5.
Wherein:
Twin channel guide's combustion heater 9 as shown in Figure 3, it be in the present invention for the vortex tube of leading type pressure regulator valve in sledge formula regulator " ice stifled " the improvement of problem, i.e. the right hot-air heater of eddy current guide (VTGH).The same with traditional vortex tube, quantity VTGH by heat tunnel can be divided into single channel eddy current guide combustion heater (VTGH-SP) and double-channel vortex guide combustion heater (VTGH-DP), uses double-channel vortex guide's combustion heater (VTGH-DP) in the present invention.Its formation is: an end has the vortex chamber 13 of pressurized gas inlet 12, the one side has cold junction gas outlet 20, opposite side has vortex tube 15 to communicate with vortex chamber 13 relatively, and the other end in vortex tube 15 is equipped with the modulating valve 18 of vortex tube, and hot junction gas outlet 17 is arranged at the top of this end.
The working principle of VTGH-DP is as follows:
Compressed natural gas is through pressurized gas inlet 12 P
Inlet Enter vortex chamber 13, enter in vortex tube 15 after the eddy current of formation High Rotation Speed.Due to mechanics effect, modulating valve 18 directions of the eddy current 14 that pressurized gas form along the runner High Rotation Speed of vortex tube 15 tube walls to vortex tube, due to the effect that is subject to vortex tube 15 tube wall frictional forces, eddy current 14 speed that pressurized gas form die-off, pressure decreased, produce simultaneously a large amount of heat energy, form the swirl gas 16 along the vortex tube tube wall.After the eddy current 14 that pressurized gas form arrived the modulating valve 18 of vortex tube, a part of gas was from P
outHot junction gas outlet 17 is discharged, and another part is pushed up back by the modulating valve 18 of vortex tube, sprays in the other direction along mind-set in vortex tube 15, forms cold back draught 19.In the process that cold back draught 19 sprays to opposite direction, continuous and close vortex tube 15 tube walls heat exchanges occur along vortex tube tube wall swirl gas 16, make along the temperature of vortex tube tube wall swirl gas 16 more and more lower, the temperature of cold back draught 19 constantly raises, until reach thermal equilibrium.
Leading type pressure regulator valve heating technology in the present invention does not need to use any extra power, the pressure reduction that occurs in guide's combustion heater 9 can be all the physical process of carrying out in guide's combustion heater 9 inside to the transfer process of heat energy, chemical reaction not occuring, do not need mobile any component yet, need not change sledge formula regulator.Need not consume any energy, the transformation of energy by pressurized gas has solved under the cryogenic conditions leading type pressure regulator valve pilot valve and because of " ice is stifled " problem that " throttle effect " produces, has eliminated the potential safety hazard of Natural Gas Station field.
After first air guide heating pilot valve pilot valve I 4 and pilot valve pilot valve II 5, directly by the pressure inlet tube downstream line of releasing, due to the transformation of energy energy conservation in whole system and guide's combustion heater 9, the end air flow in the downstream line of releasing can not affect the natural gas temperature of downstream trunk line.In heating process, when the pressure P 1 of leading type pressure regulator valve 2 upstream and downstream and the pressure difference between P2 change, throttle effect in pilot valve pilot valve I 4 will change, corresponding, thermal effect in guide's combustion heater 9 also changes because the pressure difference between P1 and P2 changes, this just mean the heating state of guide's combustion heater 9 can adaptive tracing the situation of throttle effect of leading type monitor valve 1, the heated condition that is guide's combustion heater 9 is dynamic, and its Changing Pattern is decided by the pressure difference of leading type monitor valve 1 front and back.For second level pressure regulator valve (between P2 and P3), principle is also the same.It is to be noted, although continual eddy current heat is in the outer wall accumulation of vortex equipment, the outside wall temperature of vortex equipment is constantly raise, but this temperature rise is limited, can infinitely not raise, according to the separation of regulating vortex tube than its thermal equilibrium temperature is controlled at safety anti-explosive limiting temperature (EXP IV is desired more than 130 ℃).Because, the thermal effect of guide's combustion heater 9 is a kind of dynamic effect (generation of heat is the dynamic process of synchronizeing with exchange), when guide's combustion heater 9 tube wall temperatures raise, between first air guide and hot-fluid gas, heat exchange strongly and efficiently will be carried out simultaneously, add that vortex tube separates the physical control of ratio, the temperature that makes accumulation of heat in guide's combustion heater 9 and reach can't surmount the safety anti-explosive limiting temperature, has ensured device security and a station safety of producing of sledge formula regulator.
Leading type pressure regulator valve pilot valve heating means of the present invention and device, have energy-saving and environmental protection, without moving member, the major function such as non-maintaining, realize pressure reduction can be converted to the function of heat energy take vortex tube as basic improved VTGH-DP, accurate connection line chart realizes that heat energy and first air guide that VTGH-DP is transformed realize heat exchange, and and then heating pilot valve pilot valve I 4 and pilot valve pilot valve II 5, thereby eliminate " ice is stifled " phenomenon, provide safeguard for high-pressure natural gas divides device security and the production safety of field, defeated station.
So advantage of the present invention is:
1) solve high-pressure natural gas and divided the defeated station leading type pressure regulator valve pilot valve that the field causes because of throttle effect " ice is stifled " problem under the microthermal climate condition, eliminated the potential safety hazard of a voltage adjusting device and station normal production run;
2) based on the vortex tube know-why of maturation, utilize VTGH-DP to realize that heating effect is good, and cost is lower to the heating of leading type pressure regulator valve;
3) have the characteristics such as movement-less part, non-maintaining, energy-saving and environmental protection, reliability is high and applicability is good, can effectively heat leading type pressure regulator valve pilot valve, eliminate " ice is stifled " phenomenon, for station field device and the normal production and operation provide safety guarantee.
The present invention can be applicable to domestic all high pressure long distance gas pipelines and divides in the leading type pressure regulator valve of defeated station.
Rock gas has become one of most important energy of China, and high pressure long distance gas pipeline mileage just increases rapidly, so this device has broad application prospects, and divides the development of a defeated station designing technique also will have promoting effect to China's high-pressure natural gas.
Description of drawings
Fig. 1 sledge formula regulator structural representation
Fig. 2 does not contain overvoltage protection with the heating system schematic diagram of eddy current guide heater
The right hot-air heater working principle of Fig. 3 eddy current guide schematic diagram
1-leading type monitor valve 2-leading type pressure regulator valve wherein
3-Emergeny Cutoff Valves 4-pilot valve pilot valve I
5-pilot valve pilot valve II 6-eddy current loop
The first air guide entrance of 7-vent ball valve 8-ball valve
9-guide's combustion heater 10-monitor valve pilot valve heating circuit
11-pressure regulator valve pilot valve heating circuit 12-pressurized gas inlet
The eddy current that the 14-of 13-vortex chamber pressurized gas form
15-vortex tube 16-is along the swirl gas of vortex tube tube wall
17-hot junction gas goes out the modulating valve of 18-vortex tube
The cold back draught 20-of 19-cold junction gas outlet
Embodiment
Embodiment. also the present invention is further illustrated with this example, the specific embodiment of the present invention to be described.This example is the special-purpose heating means of a kind of leading type pressure regulator valve and device, it consists of as shown in Figure 2, comprises leading type monitor valve 1 (RMG650), leading type pressure regulator valve 2 (RMG512), Emergeny Cutoff Valves 3 (RMG711), guide's combustion heater 9, pressure sensor device and other accessory etc. in traditional sledge formula regulator.This example does not change leading type monitor valve 1, leading type pressure regulator valve 2 and Emergeny Cutoff Valves 3 arranging in sledge formula regulator, compound mode, the effect that these equipment are brought into play separately can not change yet, VTGH-DP is connected with sledge formula regulator, and effectively heats pilot valve pilot valve I 4 and pilot valve pilot valve II 5 by eddy current loop 6, VTGH vent ball valve 7, first air guide entrance ball valve 8.
This example is originally should be incorporated into via the high-pressure natural gas of leading type pressure regulator valve 2 in guide's combustion heater 9, gas can be converted into heat energy, cold energy with the pressure reduction between P1 and P3 in step-down in guide's combustion heater 9, namely the original energy that transforms in leading type pressure regulator valve 2 is shunted, transforms, separated, in this conversion and separation energy process, cold energy is compared with the cold of pipeline itself, it is a very little part, the downstream line of can directly releasing, and the energy of heat is accumulated in guide's combustion heater 9.First air guide enters in guide's combustion heater 9 through first air guide entrance ball valve 8, with the hot gas generation heat exchange in guide's combustion heater 9, the pilot gas temperature is raise, form heating circuit, respectively pilot valve pilot valve I 4 and pilot valve pilot valve II 5 are heated via leading type monitor valve pilot valve heating circuit 10 and leading type pressure regulator valve pilot valve heating circuit, reach " ice is stifled " phenomenon that elimination pilot valve pilot valve I 4 and pilot valve pilot valve II 5 produce because of " throttle effect ".
This example device used is: be connected in series successively Emergeny Cutoff Valves 3, leading type monitor valve 1 and leading type pressure regulator valve 2 between the long defeated natural gas transmission pipeline suction port of high pressure and air outlet; There is a pipeline to connect Twin channel guide combustion heater 9 through 8 minutes two-way of first air guide entrance ball valve between Emergeny Cutoff Valves 3 and leading type monitor valve 1, separately has one the tunnel 6 directly to receive in Twin channel guide combustion heater 9 through the eddy current loop; Leading type monitor valve 1 and leading type pressure regulator valve 2 air outlet that is connected successively, the leading type monitor valve 1 pilot valve I4 of being connected with the leading type pressure regulator valve is connected heating circuit 10 and the heating circuit 11 that connects separately Twin channel guide combustion heater 9 with pilot valve II simultaneously; The pilot valve I 4 of leading type monitor valve 1 and leading type pressure regulator valve 2 with pick out gas port after pilot valve II 5 is connected; Twin channel guide's combustion heater 9 picks out gas port through VTGH vent ball valve 7.
In the implementation procedure of these routine heating means, traditional sledge formula pressure adjusting structure is not made any changes, do not need to consume any energy yet.
The parameter that this example Twin channel guide's combustion heater 9 used is correlated with is as described below: the long 660.4mm of being of VTGH-DP, and diameter is 101.6mm; With all adopt 6.35mm standard NPT interface being connected of pilot valve pilot valve; Gateway, eddy current loop 7,8 is that the pipeline of 12.7mm connects, entrance 12.7mmNPTM screw thread, and its Placement is that an end is the NPTF screw buckle, the other end is the 12.7mm cutting ferrule; Outlet is 12.7mmNPTF, and NPTM screw thread ball valve is all used at two ends; Connecting tube is 12.7mm stainless steel cutting ferrule; The design pressure of heater is 6.89MPa, and actual detected pressures value is 10.34MPa.The heat exchanger of this device is exactly the vortex tube pipe outer wall of himself, and heat exchanger comprises two air chambers that separate, and heats respectively pilot valve pilot valve I 4 and pilot valve pilot valve II 5.
Wherein:
Twin channel guide's combustion heater 9 as shown in Figure 3, guide's combustion heater 9 is the base substance conditions that realize in the present invention pilot valve pilot valve I 4, pilot valve pilot valve II 5 heating, its working principle is consistent with traditional vortex tube, but after changing design, it can prevent from self from occuring " ice is stifled ", simultaneously can also be according to the adjusting of the differential pressure conditions between P1 and P2 and P2 and P3 thermal effect wherein, effectively avoided the problems of excessive heat that can may occur in the heat energy transition process at pressure reduction.Its formation is: an end has the vortex chamber 13 of pressurized gas inlet 12, the one side has cold junction gas outlet 20, opposite side has vortex tube 15 to communicate with vortex chamber 13 relatively, and the other end of vortex tube 15 is equipped with the modulating valve 18 of vortex tube, and hot junction gas outlet 17 is arranged at the top of this end.
As shown in Figure 3, VTGH-DP is the device of integral structure, and the factor that himself can affect thermal effect has runner design and the modulating valve of the diameter of the structure of vortex chamber, vortex tube and length, vortex tube tube wall.Wherein, the structure of vortex chamber will determine that pressurized gas forms the character of eddy current, the runner of vortex tube tube wall, caliber and length determine that the pressure of pressurized gas eddy current flow before and after vortex tube changes, the flow through allocation proportion of hot and cold energy after vortex tube of the runner of vortex tube tube wall and modulating valve decision pressurized gas.For the actual conditions of different Natural Gas Stations field, can carry out improvement and design to the structure of VTGH-DP, to improve its applicability.
Be based on the integral structure device of vortex tube principle due to VTGH-DP, it has following features:
Movement-less part, reliability is high;
Non-maintaining, save operation cost;
Do not need other driven by energy, energy-saving and environmental protection;
Can carry out improvement and design according to the actual conditions needs, have good applicability.
This example is found through test, when reaching-10 ℃ in ambient temperature, still can effectively be heated leading type pressure regulator valve pilot valve, eliminate " ice is stifled " phenomenon of leading type pressure regulator valve pilot valve fully, removed the potential safety hazard of Gas Stations equipment and the production and operation, and energy-saving and environmental protection, it is convenient to safeguard.
Claims (2)
1. the heating means of a leading type pressure regulator valve, it is characterized in that making a small amount of pressurized gas eddy current guide combustion heater of flowing through, utilize vortex tube to the pressurized gas step-down, simultaneously pressure reduction can be converted to heat energy, and utilize this heat energy heating guide combustion gas, thereby eliminate pilot valve decompression " ice the is stifled " problem of leading type pressure regulator valve; to originally should be incorporated into via the high-pressure natural gas of leading type pressure regulator valve (2) in guide's combustion heater (9), gas can be converted into heat energy with the pressure reduction between P1 and P3 in step-down in guide's combustion heater (9), cold energy, the energy that namely will originally transform in leading type pressure regulator valve (2) is shunted, transform, separate, in this conversion and separation energy process, cold energy is compared with the cold of pipeline itself, it is a very little part, the downstream line of can directly releasing, and the energy of heat is accumulated in guide's combustion heater (9), first air guide enters in guide's combustion heater (9) through first air guide entrance ball valve (8), with the hot gas generation heat exchange in guide's combustion heater (9), the pilot gas temperature is raise, form heating circuit, respectively pilot valve pilot valve I (4) and pilot valve pilot valve II (5) are heated via leading type monitor valve pilot valve heating circuit (10) and leading type pressure regulator valve pilot valve heating circuit (11), reach " ice is stifled " phenomenon that elimination pilot valve pilot valve I (4) and pilot valve pilot valve II (5) produce because of " throttle effect ", wherein P1 and P3 are respectively suction pressure and the departures pressure that high-pressure natural gas divides field, defeated station.
2. heating equipment according to the leading type pressure regulator valve of the described method of claim 1 is included in high-pressure natural gas and divides between the suction port at defeated station and exit and be connected in series successively Emergeny Cutoff Valves (3), leading type monitor valve (1) and leading type pressure regulator valve (2); Take the suction port of Natural Gas Station field as before, the pilot valve pilot valve (4) of leading type monitor valve (1) connects the front pipeline of leading type monitor valve (1), pick out again exit simultaneously with after the pilot valve pilot valve (5) of leading type pressure regulator valve (2) is connected, and the front pipeline of the pilot valve pilot valve (5) of leading type pressure regulator valve (2) and leading type pressure regulator valve (2) is connected; It is characterized in that being connected in series successively Emergeny Cutoff Valves (3), leading type monitor valve (1) and leading type pressure regulator valve (2) between the long defeated natural gas transmission pipeline suction port of high pressure and air outlet; There is a pipeline to connect Twin channel guide combustion heater (9) through first air guide entrance ball valve (a 8) minute two-way between Emergeny Cutoff Valves (3) and leading type monitor valve (1), separately has one the tunnel directly to receive in Twin channel guide combustion heater (9) through eddy current loop (6); Leading type monitor valve (1) and leading type pressure regulator valve (2) air outlet that is connected successively, leading type monitor valve (1) is connected 2 with the leading type pressure regulator valve simultaneously) pilot valve I (4) be connected 5 with pilot valve II) connect separately heating circuit (10) and the heating circuit (11) of Twin channel guide combustion heater (9); The pilot valve I (4) of leading type monitor valve (1) and leading type pressure regulator valve (2) with pick out gas port after pilot valve II (5) is connected; Twin channel guide's combustion heater (9) picks out gas port through VTGH vent ball valve (7).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105423132A (en) * | 2015-12-09 | 2016-03-23 | 高拓石油天然气技术（上海）有限责任公司 | Natural gas pressure regulating system and setting method thereof |
| CN107420625A (en) * | 2017-04-20 | 2017-12-01 | 江苏中安科技服务有限公司 | A kind of pressure regulator valve safety detecting system and construction method |
| CN108167647A (en) * | 2018-01-22 | 2018-06-15 | 北京东方通捷燃气有限责任公司 | A kind of natural gas is stood to a high-profile |
| CN111692449A (en) * | 2020-05-06 | 2020-09-22 | 北京石油化工学院 | Two-stage vortex series connection strengthening heating system and method of high-pressure low-temperature pilot-operated pressure regulating system |
| CN112985855A (en) * | 2019-12-17 | 2021-06-18 | 中国石油天然气股份有限公司 | Test system for natural gas heating efficiency of vortex tube |
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| CN201363892Y (en) * | 2008-12-31 | 2009-12-16 | 鲁鸣 | Heat exchanger for regulating pressure of nature gas and pressure regulation device with same |
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| CN201547496U (en) * | 2009-11-27 | 2010-08-11 | 天津市华迈燃气技术发展有限公司 | Compressed natural gas feeder utilizing vortex tube to reduce pressure and heat up |
| CN201589062U (en) * | 2010-02-03 | 2010-09-22 | 骆忠智 | Heater |
| CN202012742U (en) * | 2011-01-17 | 2011-10-19 | 上海万事红燃气技术发展有限公司 | Compressed natural gas multi-stage temperature and pressure adjusting device |
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| CN105423132A (en) * | 2015-12-09 | 2016-03-23 | 高拓石油天然气技术（上海）有限责任公司 | Natural gas pressure regulating system and setting method thereof |
| CN105423132B (en) * | 2015-12-09 | 2019-03-08 | 高拓石油天然气技术（上海）有限责任公司 | A kind of natural gas pressure regulating system and its setting method |
| CN107420625A (en) * | 2017-04-20 | 2017-12-01 | 江苏中安科技服务有限公司 | A kind of pressure regulator valve safety detecting system and construction method |
| CN108167647A (en) * | 2018-01-22 | 2018-06-15 | 北京东方通捷燃气有限责任公司 | A kind of natural gas is stood to a high-profile |
| CN112985855A (en) * | 2019-12-17 | 2021-06-18 | 中国石油天然气股份有限公司 | Test system for natural gas heating efficiency of vortex tube |
| CN112985855B (en) * | 2019-12-17 | 2022-08-02 | 中国石油天然气股份有限公司 | Test system for natural gas heating efficiency of vortex tube |
| CN111692449A (en) * | 2020-05-06 | 2020-09-22 | 北京石油化工学院 | Two-stage vortex series connection strengthening heating system and method of high-pressure low-temperature pilot-operated pressure regulating system |
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