CN108662605B - Fuel control device and method thereof - Google Patents
Fuel control device and method thereof Download PDFInfo
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- CN108662605B CN108662605B CN201810244789.3A CN201810244789A CN108662605B CN 108662605 B CN108662605 B CN 108662605B CN 201810244789 A CN201810244789 A CN 201810244789A CN 108662605 B CN108662605 B CN 108662605B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a fuel control device and a method thereof, aiming at solving the safety problems that the starting is failed due to the fact that the temperature of gaseous fuel is too low before the starting of the existing combustion engine and the fuel is not emptied after the engine is stopped. According to the method, the gas turbine controller is ensured to control the heating control unit and the emptying control unit more accurately through data acquisition, the accurate adjustment of the temperature of the gaseous fuel is realized, the use stability of the gas turbine is ensured, and the accurate control of the inlet air temperature before starting and the accurate control of the gas emptying after stopping are realized.
Description
Technical Field
The disclosure relates to the technical field of fuel control of combustion engines, in particular to a fuel control device and a fuel control method.
Background
At present, the phenomenon that the fuel temperature is too low before starting or the fuel is not emptied after the stop of the combustion engine so as to cause safety problems often occurs in the use process of the combustion engine.
Because the temperature of the gaseous fuel in the pipe of the internal combustion engine before ignition is low, especially when starting at low temperature, the low-temperature gaseous fuel in the pipe can be injected for a long time, and therefore, the starting failure caused by the low temperature of the gaseous fuel often occurs. After the internal combustion engine is shut down, the gaseous fuel in the pipeline needs to be emptied to a safe area, so that the gaseous fuel is prevented from accumulating or leaking to a combustion chamber, and the shutdown safety is influenced.
The fuel control device and method for heating control of gaseous fuel before starting and gaseous fuel emptying control after stopping in the present disclosure have wide application value in practical use.
Disclosure of Invention
Technical problem to be solved
The present disclosure provides a fuel control apparatus and method thereof to at least partially solve the above-identified technical problems.
(II) technical scheme
According to an aspect of the present disclosure, there is provided a fuel control apparatus including: a heating control unit including; the acquisition assembly is used for respectively acquiring the temperature and gas pressure data of the gaseous fuel in each state; the adjusting assembly is used for adjusting the temperature and gas pressure data acquired by the acquisition assembly to a state suitable for outputting the gaseous fuel; the blocking unit is used for blocking the gaseous fuel from the combustion chamber in the use process of the gaseous fuel thermal control unit before starting; and the gas engine controller is used for controlling the opening and closing of each component and the blocking unit in the heating control unit through the gas engine controller according to the temperature and gas pressure data of the gaseous fuel collected by the collecting component in the heating control unit before the gas engine is started.
In some embodiments of the present disclosure, the acquisition assembly comprises: the air inlet pressure sensor is used for collecting the pressure value of the gaseous fuel during air inlet; the air inlet temperature sensor is used for acquiring the temperature value of the gaseous fuel during air inlet; the rear pressure sensor of the heater is used for acquiring the pressure value of the fuel regulated by the regulating component; and the rear temperature sensor of the warmer is used for acquiring the fuel temperature value regulated by the regulating component.
In some embodiments of the present disclosure, the adjustment assembly comprises: the gaseous fuel heater heats the gaseous fuel according to the data collected by the collecting assembly before reaching the preset temperature, collects the data of the heated gaseous fuel again until reaching the preset temperature, and closes the gaseous fuel heater; and the emptying and heating valve is used for emptying the supercooled gaseous fuel and closing the valve after the supercooled gaseous fuel reaches a set temperature.
In some embodiments of the present disclosure, the blocking unit includes: the gaseous fuel isolation valve is opened after the gaseous fuel reaches a preset temperature; and the gaseous fuel regulating valve is used for opening the gaseous fuel after the gaseous fuel reaches the preset temperature.
According to an aspect of the present disclosure, there is provided a fuel control method of a fuel control apparatus, including the steps of: step a: measuring gaseous fuel intake pressure P1 and gaseous fuel intake temperature T1 via an intake pressure sensor and an intake temperature sensor, respectively; step b: setting the starting temperature to be T0, when the gas fuel inlet temperature T1 is lower than the starting set temperature T0, controlling the gas fuel warmer to be opened through the gas turbine controller, warming the inlet fuel until the gas fuel inlet temperature T1 is higher than the starting set temperature T0, and closing the gas fuel warmer; step c: when the gaseous fuel heater is started, the emptying heating valve is controlled to be opened through the gas turbine controller so as to empty the supercooled gaseous fuel; step d: when the gaseous fuel inlet temperature T1 is higher than the starting set temperature T0, the gas engine controller closes the emptying and heating valve, cuts off the gaseous fuel heater, opens the gaseous fuel isolating valve and the gaseous fuel regulating valve, and starts ignition.
According to an aspect of the present disclosure, there is provided a fuel control apparatus including: the blocking unit is used for blocking the gaseous fuel and the combustion chamber after the shutdown before the emptying control unit is started; an evacuation control unit comprising: the opening time of the fuel emptying valve is t; the collecting assembly is used for collecting a pressure value P2, a temperature value T2 and a flow W of the gaseous fuel after shutdown; the gas engine controller is used for calculating the complete emptying time ts of the gaseous fuel according to the data of the pressure value P2, the temperature value T2 and the flow W of the gaseous fuel after the gas engine is shut down, wherein the data are acquired by the acquisition assembly; when the fuel-evacuation valve opening time t is longer than the gaseous-fuel complete-evacuation time ts, the fuel-evacuation valve is closed.
In some embodiments of the present disclosure, the gaseous fuel complete purge time ts is calculated as
And obtaining a pressure value P2, a temperature value T2 and a flow W of the gaseous fuel after the shutdown according to the acquisition assembly, wherein d is the diameter of a pipeline, L is the length of the pipeline between the gaseous fuel isolation valve and the gaseous fuel regulating valve, and Rg is an ideal gaseous constant of the gaseous fuel.
In some embodiments of the present disclosure, the blocking unit includes: a gaseous fuel isolation valve that opens after shutdown; a gaseous fuel regulating valve which is opened after the shutdown; the collection subassembly includes: the shutdown gaseous fuel pressure sensor acquires a pressure value P2 of the gaseous fuel after shutdown; a shutdown gaseous fuel temperature sensor for collecting a shutdown gaseous fuel temperature value T2; and a mass flow meter through which the flow rate W of the gaseous fuel is measured.
According to an aspect of the present disclosure, there is provided a fuel control method of a fuel control apparatus, including the steps of: step a: when the gas turbine is stopped, closing the gas fuel isolating valve and the gas fuel regulating valve; step b: opening a fuel evacuation valve to evacuate fuel in the pipeline between the gaseous fuel isolation valve and the gaseous fuel regulating valve; step c: the opening time of the fuel-evacuation valve is controlled by the engine controller.
In some embodiments of the present disclosure, step c further comprises: substep c 1: calculating the complete emptying time ts of the gaseous fuel according to the data of the pressure value P2, the temperature value T2 and the flow W of the gaseous fuel after the shutdown, which are acquired by the acquisition assembly; substep c 2: when the opening time t of the fuel evacuation valve is less than the complete evacuation time ts of the gaseous fuel, the fuel evacuation valve is continuously opened; substep c 3: when the fuel-evacuation valve opening time t is greater than the gaseous fuel complete evacuation time ts, the fuel-evacuation valve is controlled to close by the engine controller.
(III) advantageous effects
According to the technical scheme, the fuel control device and the method thereof disclosed by the invention have at least one or part of the following beneficial effects:
(1) the setting of collection subassembly can guarantee through data acquisition that the gas turbine controller is more accurate to heating control unit and evacuation control unit's control, realizes gaseous fuel temperature's accurate regulation, guarantees the stability that the gas turbine used.
(2) The blocking unit is arranged, and the gaseous fuel between the blocking unit and the gaseous fuel regulating valve is blocked by the gaseous fuel isolating valve and the gaseous fuel regulating valve, so that the blocked gaseous fuel can be heated or emptied.
(3) The gas turbine controller realizes accurate control of inlet air temperature before starting and gas evacuation after stopping.
Drawings
FIG. 1 is a schematic structural diagram of a fuel control device according to an embodiment of the disclosure.
FIG. 2 is a flow chart of closed loop control logic for gaseous fuel heating control prior to startup in accordance with an embodiment of the present disclosure.
FIG. 3 is a flow chart of closed loop control logic for gaseous fuel purge control after shutdown in accordance with an embodiment of the present disclosure.
[ description of main reference numerals in the drawings ] of the embodiments of the present disclosure
1-an intake pressure sensor; 2-an intake air temperature sensor;
3-a gaseous fuel warmer; 4-a warmer rear pressure sensor;
5-rear warmer temperature sensor; 6-emptying a heating valve;
7-a gaseous fuel isolation valve; 8-shutdown gaseous fuel pressure sensor;
9-shutdown gaseous fuel temperature sensor; 10-mass flow meter;
11-a fuel evacuation valve; 12-a gaseous fuel regulating valve;
13-a combustion engine controller; 14-a combustor nozzle;
S11-S19, S21-S27: and (5) carrying out the following steps.
Detailed Description
The invention provides a fuel control device and a method thereof, aiming at solving the safety problems that the starting is failed due to the fact that the temperature of gaseous fuel is too low before the starting of the existing combustion engine and the fuel is not emptied after the engine is stopped.
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Certain embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the disclosure are shown. Indeed, various embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
A fuel control apparatus is provided. FIG. 1 is a schematic structural diagram of a fuel control device according to an embodiment of the disclosure. As shown in fig. 1, a fuel control apparatus includes: a heating control unit, a blocking unit, and a combustion engine controller 13; the heating control unit comprises a collecting assembly and an adjusting assembly; the collecting assembly respectively collects the temperature and gas pressure data of the gaseous fuel in each state; the adjusting assembly adjusts the gas fuel to be in a state suitable for outputting the gas fuel according to the data acquired by the acquisition assembly; the blocking unit is used for blocking the gaseous fuel from the combustion chamber in the use process of the gaseous fuel thermal control unit before starting; and the combustion engine controller 13 controls the opening and closing of each component and the blocking unit in the heating control unit through the combustion engine controller 13 according to the temperature and gas pressure data of the gaseous fuel acquired by the acquisition component in the heating control unit before the combustion engine is started.
Wherein the collection component includes: an air inlet pressure sensor 1, an air inlet temperature sensor 2, a warmer rear pressure sensor 4 and a warmer rear temperature sensor 5; the air inlet pressure sensor 1 is used for collecting the pressure value of the gaseous fuel during air inlet; an intake air temperature sensor 2 for collecting a gaseous fuel temperature value during intake air; the warmer rear pressure sensor 4 is used for acquiring the fuel pressure value regulated by the regulating assembly; and the post-warmer temperature sensor 5 is used for acquiring the fuel temperature value regulated by the regulating assembly. Wherein the adjusting assembly includes: a gaseous fuel warmer 3 and an air release warming valve 6; the gaseous fuel warmer 3 is used for warming the gaseous fuel according to the data collected by the collecting assembly before the preset temperature is reached, collecting the data of the warmed gaseous fuel again until the preset temperature is reached, and closing the gaseous fuel warmer 3; and the emptying and heating valve 6 is used for emptying the supercooled gaseous fuel and closing the valve after the supercooled gaseous fuel reaches a set temperature. Wherein the blocking unit includes: a gaseous fuel isolation valve 7 and a gaseous fuel regulating valve 12; a gaseous fuel isolation valve 7 for opening the gaseous fuel after the gaseous fuel reaches a preset temperature; the gaseous fuel regulating valve 12 opens the gaseous fuel after a preset temperature is reached.
There is also provided a fuel control apparatus including: a blocking unit, an evacuation control unit and a combustion engine controller 13; the blocking unit is used for blocking the gaseous fuel and the combustion chamber after the shutdown before the emptying control unit is started; an evacuation control unit comprising: a fuel evacuation valve 11 and a collection assembly; a fuel-off valve 11 that is open for a time t; the collecting component is used for collecting the pressure value P of the gaseous fuel after shutdown2Temperature value T2Flow rate W; the gas turbine controller is used for collecting the pressure value P of the gaseous fuel after the shutdown according to the collecting component after the shutdown of the gas turbine2Temperature value T2Flow rate W, calculating the time t for complete emptying of the gaseous fuels(ii) a The opening time t of the fuel-evacuation valve 11 is longer than the complete evacuation time t of the gaseous fuelsWhen so, the fuel-evacuation valve is closed.
Wherein, the blocking unit includes: a gaseous fuel isolation valve 7 and a gaseous fuel regulating valve 12; both the gaseous fuel isolation valve 7 and the gaseous fuel regulating valve 12 are closed after shutdown. Wherein, gather the subassembly and include: a shutdown gaseous fuel pressure sensor 8, a shutdown gaseous fuel temperature sensor 9, and a mass flow meter 10; a gas fuel pressure sensor 8 for collecting the pressure value P of the gas fuel after shutdown2(ii) a A shutdown gaseous fuel temperature sensor 9 for collecting the temperature T of the gaseous fuel after shutdown2(ii) a The mass flow meter 10 measures the flow rate W of the gaseous fuel by the mass flow meter 10. Wherein the time t for complete emptying of the gaseous fuelsThe calculation formula of (2) is as follows:
obtaining the pressure value P of the gaseous fuel after shutdown according to the acquisition assembly2Temperature value T2Flow rate W, where d is the conduit diameter and L is the gaseous fuel isolation valve and gaseous stateThe length of the conduit between the fuel regulating valves, Rg, is the ideal gaseous constant for gaseous fuels.
The present disclosure also provides a fuel control method of the fuel control apparatus. The fuel control method acting on the fuel control device before the starting of the combustion engine comprises the following steps: step a: gaseous fuel intake pressure P is measured by intake pressure sensor 1 and intake temperature sensor 2, respectively1And gaseous fuel intake temperature T1(ii) a Step b: setting the starting temperature to T0When gaseous fuel intake temperature T1Less than the starting set temperature T0When the gas engine controller 13 controls the gaseous fuel heater 3 to be opened, the intake fuel is heated to the intake temperature T of the gaseous fuel1Greater than the starting set temperature T0The gaseous fuel warmer 3 is turned off; step c: when the gaseous fuel warmer 3 is started, the emptying and heating valve 6 is controlled to be opened through the gas engine controller 13 so as to empty the overcooled gaseous fuel; step d: when gaseous fuel intake temperature T1Greater than the starting set temperature T0At this time, the gas engine controller 13 closes the atmospheric temperature raising valve 6, shuts off the gaseous fuel heater 3, opens the gaseous fuel isolation valve 7 and the gaseous fuel control valve 12, and starts ignition. A fuel control method for acting on a post-shutdown fuel control device, comprising the steps of: step a: when the combustion engine is stopped, closing the gaseous fuel isolating valve 7 and the gaseous fuel regulating valve 12; step b: opening the fuel evacuation valve 11 to evacuate the fuel in the pipe between the gaseous fuel isolation valve 7 and the gaseous fuel regulating valve 12; step c: the opening time of the fuel-evacuation valve 11 is controlled by the engine controller 13. Wherein step c further comprises: step c 1: according to the pressure value P of the gaseous fuel after the shutdown, which is acquired by the acquisition assembly2Temperature value T2Flow rate W, calculating the time t for complete emptying of the gaseous fuels(ii) a Step c 2: the opening time t of the fuel-evacuation valve 11 is smaller than the complete evacuation time t of the gaseous fuelsWhen this occurs, the fuel-evacuation valve 11 continues to be opened; step c 3: the opening time t of the fuel-evacuation valve 11 is longer than the complete evacuation time t of the gaseous fuelsAt this time, the fuel-evacuation valve 11 is controlled to close by the engine controller 13.
In the first of the present disclosureIn one embodiment, a pre-start gaseous fuel heating control closed loop is provided. FIG. 2 is a flow chart of closed loop control logic for gaseous fuel heating control prior to startup in accordance with an embodiment of the present disclosure. As shown in fig. 1 and fig. 2, wherein the connection mode is as shown in fig. 1, the control principle is as shown in fig. 2, and the present embodiment includes an intake pressure sensor 1, an intake temperature sensor 2, a gaseous fuel warmer 3, a post-warmer pressure sensor 4, a post-warmer temperature sensor 5, a warm-up air valve 6, a gaseous fuel isolating valve 7, a gaseous fuel regulating valve 12, a combustion engine controller 13 and a combustion chamber nozzle 14. Under the control logic shown in fig. 2, before the internal combustion engine starts to ignite, measuring the pressure P and the temperature T of the intake fuel through the intake pressure sensor 1 and the intake temperature sensor 2, step s 11; passing through and setting the starting temperature T0Comparison, step s 12; when the measured gaseous fuel temperature T is less than the set starting temperature T0At this time, the control logic operates the gaseous fuel warmer 3 to heat the gaseous fuel, step s 13; and opening the emptying and heating valve 6 to empty the supercooled gaseous fuel, step s 14; thereby raising the fuel temperature as quickly as possible to the starting temperature. The temperature sensor 5 measures the post-warmer temperature T of the gaseous fuel1Step s 15; through T1With a set starting temperature T0Comparing again, step s 16; when measuring the temperature T of the gaseous fuel1Less than a set starting temperature T0When the temperature is higher than the set temperature, the opening states of the gaseous fuel heater and the emptying temperature rising valve are continuously kept; when measuring the temperature T of the gaseous fuel1Greater than a set starting temperature T0When so, the gaseous fuel warmer is turned off, step s 17; the vent temperature raising valve is closed, step s 18; opening the gaseous fuel isolation valve and the gaseous fuel regulating valve, step s 19; gaseous fuel enters the combustion chamber through the combustion chamber nozzle 14, initiating ignition.
Thus, the closed loop control of gaseous fuel heating prior to start-up of the first embodiment of the present disclosure has been described.
In a second embodiment of the present disclosure, a closed loop control of gaseous fuel heating after shutdown is provided. FIG. 3 is a flow chart of closed loop control logic for gaseous fuel purge control after shutdown in accordance with an embodiment of the present disclosure. As shown in fig. 1 and 3, wherein the connection mode is as shown in fig. 1, the control sourceAs shown in figure 3. The implementation comprises a gaseous fuel isolation valve 7, a shutdown gaseous fuel pressure sensor 8, a shutdown gaseous fuel temperature sensor 9, a mass flow meter 10, a fuel evacuation valve 11, a gaseous fuel regulating valve 12, a combustion engine controller 13 and a combustor nozzle 14. When the combustion engine is stopped, the gaseous fuel regulating valve 12 is closed, step s 21; closing the gaseous fuel isolation valve 7, step s 22; opening the fuel purge valve 11, step s 23; the fuel in the conduit between the gaseous fuel isolation valve and the gaseous fuel regulator valve is evacuated to a safe area. For effective control of purge time, measured gaseous fuel pressure P is measured by shutdown gaseous fuel pressure sensor 8 and shutdown gaseous fuel temperature sensor 9, respectively, under the control logic of FIG. 32And temperature T2Step s 24; measuring the flow rate W of the gaseous fuel by the mass flow meter 10, step s 25; the complete emptying time of the gaseous fuel can be calculated as
Where d is the conduit diameter, L is the conduit length between the gaseous fuel isolation valve and the gaseous fuel regulator valve, and Rg is the desired gaseous constant for the gaseous fuel. By the opening time t and the complete emptying time t of the fuel emptying valvesComparison, step s 26; if the fuel-evacuation valve opening time t is greater than the full evacuation time tsWhen so, the fuel purge valve is closed, step s 27; the fuel-evacuation valve opening time t is less than the full evacuation time tsWhen it is time, the open state of the fuel-evacuation valve is maintained.
For the purpose of brief description, any technical features that can be applied to the same in the above embodiment 1 are described herein, and the same description need not be repeated.
Thus, the closed loop introduction of the gaseous fuel heating control after the shutdown of the second embodiment of the present disclosure is completed.
So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
From the above description, those skilled in the art should clearly recognize that the fuel control apparatus and method of the present disclosure are capable of being implemented.
In summary, the present disclosure provides a fuel control apparatus and method thereof, which controls the fuel temperature by heating the gaseous fuel and exhausting the supercooled gaseous fuel before starting, and controls the exhaust time by controlling the flow rate, temperature and pressure of the gaseous fuel after stopping, so as to ensure the safe use of the combustion engine.
It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present disclosure. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure.
And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Unless otherwise indicated, the numerical parameters set forth in the specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". Generally, the expression is meant to encompass variations of ± 10% in some embodiments, 5% in some embodiments, 1% in some embodiments, 0.5% in some embodiments by the specified amount.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
In addition, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
The disclosure may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. Various component embodiments of the disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components in the relevant apparatus according to embodiments of the present disclosure. The present disclosure may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present disclosure may be stored on a computer-readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A fuel control apparatus comprising:
a heating control unit including;
the acquisition assembly is used for respectively acquiring the temperature and gas pressure data of the gaseous fuel in each state; and
the adjusting assembly adjusts the temperature and gas pressure data acquired by the acquisition assembly to a state suitable for outputting the gaseous fuel;
the blocking unit is used for blocking the gaseous fuel from the combustion chamber in the use process of the gaseous fuel thermal control unit before starting; and
and the gas engine controller is used for controlling the opening and closing of each component and the blocking unit in the heating control unit through the gas engine controller according to the temperature and gas pressure data of the gaseous fuel collected by the collection component in the heating control unit before the gas engine is started.
2. The fuel control device of claim 1, the collection assembly comprising:
the air inlet pressure sensor is used for collecting the pressure value of the gaseous fuel during air inlet;
the air inlet temperature sensor is used for acquiring the temperature value of the gaseous fuel during air inlet;
the rear pressure sensor of the heater is used for acquiring the pressure value of the fuel regulated by the regulating component; and
and the rear temperature sensor of the warmer is used for acquiring the fuel temperature value regulated by the regulating component.
3. The fuel control device of claim 1, the adjustment assembly comprising:
the gaseous fuel heater heats the gaseous fuel according to the data collected by the collecting assembly before reaching the preset temperature, collects the data of the heated gaseous fuel again until reaching the preset temperature, and closes the gaseous fuel heater; and
and the emptying and heating valve is used for emptying the supercooled gaseous fuel and closing the valve after the supercooled gaseous fuel reaches a set temperature.
4. The fuel control apparatus according to claim 1, the blocking unit comprising:
a gaseous fuel isolation valve that opens after the gaseous fuel reaches a preset temperature; and
a gaseous fuel regulating valve that opens after the gaseous fuel reaches a preset temperature.
5. A fuel control method using the fuel control apparatus according to any one of claims 1 to 4, comprising the steps of:
step a: measuring gaseous fuel intake pressure P by intake pressure sensor and intake temperature sensor respectively1And gaseous fuel intake temperature T1；
Step b: setting the starting temperature to T0When gaseous fuel intake temperature T1Less than the starting set temperatureT0When the gas turbine controller controls the gaseous fuel heater to be opened, the gas turbine controller heats the intake fuel to the intake temperature T of the gaseous fuel1Greater than the starting set temperature T0The gaseous fuel warmer is turned off;
step c: when the gaseous fuel heater is started, the emptying heating valve is controlled to be opened through the gas turbine controller so as to empty the supercooled gaseous fuel; and
step d: when gaseous fuel intake temperature T1Greater than the starting set temperature T0And when the gas engine controller is used, the emptying and heating valve is closed, the gaseous fuel heater is cut off, the gaseous fuel isolating valve and the gaseous fuel regulating valve are opened, and ignition is started.
6. A fuel control apparatus comprising:
the blocking unit is used for blocking the gaseous fuel and the combustion chamber after the shutdown before the emptying control unit is started;
an evacuation control unit comprising:
the opening time of the fuel emptying valve is t; and
the collecting component is used for collecting the pressure value P of the gaseous fuel after shutdown2Temperature value T2Flow rate W; and
the gas turbine controller is used for acquiring the pressure value P of the gaseous fuel after the shutdown according to the acquisition component after the shutdown of the gas turbine2Temperature value T2Flow rate W, calculating the time t for complete emptying of the gaseous fuels(ii) a The fuel-evacuation valve opening time t is greater than the gaseous fuel complete evacuation time tsWhen so, the fuel purge valve is closed.
7. The fuel control device of claim 6, said gaseous fuel being completely purged for time tsIs calculated by the formula
Get shutdown according to collection assemblyPressure value P of post-gaseous fuel2Temperature value T2Flow rate W, where d is the conduit diameter, L is the conduit length between the gaseous fuel isolation valve and the gaseous fuel regulator valve, and Rg is the desired gaseous constant for the gaseous fuel.
8. The fuel control apparatus according to claim 6,
the blocking unit includes:
a gaseous fuel isolation valve that closes after shutdown; and
a gaseous fuel regulating valve which is closed after shutdown;
the collection assembly includes:
the pressure sensor of the gas fuel stops, collects the pressure value P of the gas fuel after the stop2；
A shutdown gaseous fuel temperature sensor for collecting the temperature T of the gaseous fuel after shutdown2(ii) a And
a mass flow meter by which the flow rate W of the gaseous fuel is measured.
9. A fuel control method using the fuel control apparatus according to any one of claims 6 to 8, comprising the steps of:
step a: when the gas turbine is stopped, closing the gas fuel isolating valve and the gas fuel regulating valve;
step b: opening the fuel evacuation valve to evacuate fuel from the gaseous fuel isolation valve and gaseous fuel regulator inter-valve conduit; and
step c: the opening time of the fuel evacuation valve is controlled by the engine controller.
10. The fuel control method according to claim 9, said step c further comprising:
substep c 1: according to the pressure value P of the gaseous fuel after the shutdown, which is acquired by the acquisition assembly2Temperature value T2Flow rate W, calculating the time t for complete emptying of the gaseous fuels；
Substep c 2: what is needed isThe opening time t of the fuel-evacuation valve is less than the complete evacuation time t of the gaseous fuelsContinuing to open the fuel purge valve; and
substep c 3: the fuel-evacuation valve opening time t is greater than the gaseous fuel complete evacuation time tsThe fuel-evacuation valve is controlled to close by the engine controller.
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| CN201810244789.3A CN108662605B (en) | 2018-03-23 | 2018-03-23 | Fuel control device and method thereof |
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| CN201810244789.3A CN108662605B (en) | 2018-03-23 | 2018-03-23 | Fuel control device and method thereof |
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| CN108662605A CN108662605A (en) | 2018-10-16 |
| CN108662605B true CN108662605B (en) | 2020-03-17 |
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| JP3964709B2 (en) * | 2002-03-28 | 2007-08-22 | 株式会社東芝 | Gas turbine fuel gas supply system and operation method thereof |
| JP4179333B2 (en) * | 2006-04-12 | 2008-11-12 | トヨタ自動車株式会社 | Start control device for internal combustion engine |
| AT506561B1 (en) * | 2009-05-07 | 2011-05-15 | Avl List Gmbh | METHOD FOR STARTING A COMBUSTION ENGINE POWERED BY INTERNAL COMBUSTION ENGINE |
| CN102926874B (en) * | 2012-11-07 | 2014-08-27 | 中国科学院工程热物理研究所 | Combustion gas turbine fuel supply device capable of flexibly blending and switching fuels and control method |
| CN105090954B (en) * | 2014-05-05 | 2017-11-17 | 神华集团有限责任公司 | The burning Application way of fuel gas with low heat value and burning and warm-air supply system |
| CN104929780A (en) * | 2015-06-24 | 2015-09-23 | 中国能建集团装备有限公司北京技术中心 | Gas turbine tail gas utilization system |
| CN205744156U (en) * | 2016-05-06 | 2016-11-30 | 浙江大唐国际江山新城热电有限责任公司 | A kind of fume afterheat heated natural gas fuel system |
| US9803565B1 (en) * | 2016-05-24 | 2017-10-31 | Caterpillar Inc. | System and method for measuring quality of fuel |
| CN107201954B (en) * | 2017-05-05 | 2019-03-12 | 杭州华电半山发电有限公司 | Using LVE scheme DLN2.6+ combustion system combustion engine startup stage combustion stability control method |
| CN207393332U (en) * | 2017-11-07 | 2018-05-22 | 荆门宏图特种飞行器制造有限公司 | LPG power generation air supply systems |
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2018
- 2018-03-23 CN CN201810244789.3A patent/CN108662605B/en not_active Expired - Fee Related
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