CN202900420U - Liquid fuel metering device of triple channel combustion turbine - Google Patents
Liquid fuel metering device of triple channel combustion turbine Download PDFInfo
- Publication number
- CN202900420U CN202900420U CN 201220596987 CN201220596987U CN202900420U CN 202900420 U CN202900420 U CN 202900420U CN 201220596987 CN201220596987 CN 201220596987 CN 201220596987 U CN201220596987 U CN 201220596987U CN 202900420 U CN202900420 U CN 202900420U
- Authority
- CN
- China
- Prior art keywords
- pressure reduction
- backup
- metering
- unit
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Fuel Cell (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The utility model discloses a liquid fuel metering device of a triple channel combustion turbine, and the liquid fuel metering device is especially suitable for ground combustion turbines, aeroengines and other power devices which have high authenticity requirements on fuel metering. The liquid fuel metering device is characterized in that a backup fuel metering mechanism, a backup pressure difference return flow mechanism, a fault detection commutation mechanism and the like are additionally arranged in the device, when the combustion turbine operates, a combustion engine control unit VII can open a pressure difference return flow main/backup/main backup channel to operate according to the measured value of a return flow channel pressure sensor through a reversal valve, so that the reliability of a return flow channel is improved; and the combustion engine control unit VII can open the pressure difference return flow main/backup/main backup channel to operate according to the measured value of a metering channel flowmeter through a reversal valve, so that the reliability of a metering channel is improved. The liquid fuel metering device provided by the utility model adopts a main backup triple channel structural style and a mutual switchover function of the working state of a triple channel to improve the reliability of fuel metering, and the triple channel has wide application value.
Description
Technical field
The utility model relates generally to a kind of liquid fuel measuring apparatus, specifically, relate to for the control gas turbine fuel reflux and the metering path and device, be particularly useful for ground gas turbine, aeroengine and other is in the high power plant of fuel metering reliability requirement.
Background technique
The gas turbine control system reliability is mainly determined by control unit and fuel metering device reliability, in recent years, the application of redundancy digital control technology and multichannel full powers limit digital control unit are succeeded in developing, greatly improved the reliability of turbine control system, the single channel fuel metering device that adopts has at present then hindered the further raising of gas turbine control system reliability, and the utility model just proposes under this background.
Fuel metering device utilizes pressure reduction backflow valve to have the fuel of maintenance by the next accurate computing fuel flow of pressure reduction permanent character before and after the metering valve, if pressure reduction backflow valve breaks down in the work, then fuel pressure difference does not possess permanent character before and after the metering, thereby affects the fuel accuracy of computation; Equally, if metering valve breaks down, also lost for the combustion machine provides fuel functional and cause it flame-out thereby fire equally machine.Triple channel gas turbine fuel device has increased backup fuel metering, the backflow of backup fuel pressure difference, faut detection and changement, but make metering have analytic accounting amount, backup metering and active and standby part by above-mentioned design and measure simultaneously three routing paths, but same fuel return also has, and main pressure reduction refluxes, backup pressure reduction refluxes, active and standby part of three routing paths that reflux simultaneously, adopts above-mentioned access structure form greatly to improve fuel metering device and reliability control system.
The model utility content
The utility model is the low problem of solution gas turbine fuel measuring apparatus reliability, and then has proposed a kind of active and standby part of triple channel fuel metering device.
The utility model is that the technological scheme that its technical problem of solution is taked is:
A kind of triple channel gas turbine liquid fuel measuring apparatus, comprise compress cell I, pressure reduction reflux unit II, pressure reduction faut detection and reversing unit III, batching unit IV, metering fault detection and reversing unit V, reach pressure limiting unlatching unit VI, it is characterized in that:
Described compress cell I comprises centrifugal pump, the gear pump that connects successively by pipeline;
Described pressure reduction reflux unit II one end is communicated with the outlet of batching unit IV, the other end comprises pressure reduction loop inlet ductwork and pressure reduction loop export pipeline, pressure reduction loop inlet ductwork is communicated with the outlet of compress cell I, the pipeline communication in pressure reduction loop export pipeline and the compress cell I between centrifugal pump and the gear pump;
Described pressure reduction faut detection and reversing unit III, comprise the pressure transducer that is arranged on the inlet ductwork of described pressure reduction loop, be arranged on pressure transducer on the export pipeline of described pressure reduction loop, and pressure reduction backflow valve selector valve, described pressure reduction backflow valve selector valve is arranged on the inlet ductwork of described pressure reduction loop;
Described metering fault detects and the reversing unit V, comprises Access flow meter, metering selector valve, and described Access flow meter is arranged on the lane exit place of batching unit IV, and described metering selector valve is arranged on the lane entrance place of batching unit IV.
Preferably, pressure reduction reflux unit II comprises main pressure reduction backflow mechanism and backup pressure reduction backflow mechanism.
Preferably, described main pressure reduction backflow mechanism comprises main pressure reduction backflow valve, the one end is communicated with the outlet of batching unit IV, its the other end comprises pressure reduction loop inlet ductwork E passage and pressure reduction loop export pipeline C-channel, the E passage is communicated with the pipeline communication in C-channel and the compress cell I between centrifugal pump and the gear pump with an outlet of pressure reduction backflow valve selector valve; Described backup pressure reduction backflow mechanism comprises backup pressure reduction backflow mechanism, the one end is communicated with the outlet of batching unit IV, its the other end comprises pressure reduction loop inlet ductwork F passage and pressure reduction loop export pipeline D passage, the F passage is communicated with the pipeline communication in D passage and the compress cell I between centrifugal pump and the gear pump with another outlet of pressure reduction backflow valve selector valve.
Preferably, described Access flow meter comprises primary path flowmeter, backup Access flow meter, described batching unit IV comprises A, B two passages, each links to each other the import of A, B two passages with an outlet of metering selector valve, the analytic accounting measuring mechanism is set on the A channel, and near the outlet port primary path flowmeter is being set; Backup metrological service is set on the B passage and backup Access flow meter is being set near the outlet port.
Preferably, described analytic accounting measuring mechanism comprises main metering valve, main fuel metering actuating motor, reaches main fuel metering displacement transducer; Described backup metrological service comprises backup metering valve, backup fuel metering actuating motor and backup fuel metering displacement transducer.
Preferably, described liquid fuel measuring apparatus also comprises combustion machine control unit VII, opens the unit VI and is connected by control wiring with compress cell I, pressure reduction reflux unit II, pressure reduction faut detection and reversing unit III, batching unit IV, metering fault detection and reversing unit V, pressure limiting.
Preferably, described compress cell I also comprises safety valve, and described safety valve and gear pump are installed in parallel.
The triple channel fuel metering device comprises the elements such as centrifugal pump, gear pump, safety valve, pressure transducer, fuel metering valve, flowmeter, actuating motor, selector valve, displacement transducer (LVDT), pressure reduction backflow valve, pressure limiting valve and combustion machine control unit in the utility model.Described centrifugal pump plays the one-level pressurization before being installed on gear pump; Described safety valve and gear pump are installed side by side, play the pressure release effect; Described pressure transducer is installed on before and after the pressure reduction backflow valve, works the return pressure effect that detects; After described flowmeter is installed on metering valve, work the fuel flow rate effect of measuring; Described fuel metering valve plays the effect of metering fuel flow; Described actuating motor plays and changes the effect of metering valve aperture area; Described displacement transducer (LVDT) works the valve opening size effect that detects; Described selector valve plays different path switching effects.
The utility model with respect to the remarkable advantage of prior art is: utilize pressure reduction backflow valve to have the fuel of maintenance and come accurate computing fuel flow by pressure reduction permanent character before and after the metering valve, if pressure reduction backflow valve breaks down in the work, then fuel pressure difference does not possess permanent character before and after the metering, thereby affects the fuel accuracy of computation; Equally, if metering valve breaks down, also lost for the combustion machine provides fuel functional and cause it flame-out thereby fire equally machine.Triple channel gas turbine fuel device has increased backup fuel metering, the backflow of backup fuel pressure difference, faut detection and changement, but make metering have analytic accounting amount, backup metering and active and standby part by above-mentioned design and measure simultaneously three routing paths, but same fuel return also has, and main pressure reduction refluxes, backup pressure reduction refluxes, active and standby part of three routing paths that reflux simultaneously, adopts above-mentioned access structure form greatly to improve fuel metering device and reliability control system.
Description of drawings
Fig. 1 is triple channel fuel metering device schematic diagram;
Fig. 2 is fuel metering device gage work schematic diagram.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
As shown in Figure 1, triple channel gas turbine liquid fuel measuring apparatus of the present utility model, comprise compress cell I, pressure reduction reflux unit II, pressure reduction faut detection and reversing unit III, batching unit IV, metering fault detection and reversing unit V, pressure limiting unlatching unit VI and gas turbine control unit VII, described compress cell I, batching unit IV, pressure limiting are opened the unit VI and are linked to each other successively by pipeline; Described compress cell I comprises centrifugal pump 1, gear pump 2 safety valves 3 that connect successively by pipeline, and safety valve 3 is installed side by side with gear pump 2, plays the pressure release effect.
Pressure reduction reflux unit II comprises active and standby part of pressure reduction backflow mechanism, can realize that primary path refluxes or the backup path refluxes or active and standby part of path refluxes simultaneously.Main pressure reduction backflow mechanism comprises main pressure reduction backflow valve 16, one end is communicated with the outlet of batching unit IV, its the other end comprises pressure reduction loop inlet ductwork E passage and pressure reduction loop export pipeline C-channel, the E passage is communicated with the pipeline communication in C-channel and the compress cell I between centrifugal pump 1 and the gear pump 2 with an outlet of pressure reduction backflow valve selector valve 4; Backup pressure reduction backflow mechanism comprises backup pressure reduction backflow mechanism 17, the one end is communicated with the outlet of batching unit IV, its the other end comprises pressure reduction loop inlet ductwork F passage and pressure reduction loop export pipeline D passage, the F passage is communicated with the pipeline communication in D passage and the compress cell I between centrifugal pump 1 and the gear pump 2 with another outlet of pressure reduction backflow valve selector valve 4.
Pressure reduction faut detection and reversing unit III, comprise the pressure transducer 21,22 that is arranged on described pressure reduction loop inlet ductwork E passage, the F passage, be arranged on the pressure transducer 23 on the export pipeline of pressure reduction loop, and be arranged on the pressure reduction backflow valve selector valve 4 on the inlet ductwork of pressure reduction loop.
The batching unit IV comprises A, B two passages, the import of A, B two passages links to each other with the outlet of metering selector valve 7 respectively, the close outlet port of A, B two passages is respectively arranged with Access flow meter 18,19, the analytic accounting measuring mechanism is set on the A channel, backup metrological service is set on the B passage can realizes that primary path metering or backup path measure or active and standby part of path measures simultaneously.The analytic accounting measuring mechanism comprises main metering valve 24, main fuel metering actuating motor 11, reaches main fuel metering displacement transducer 8; Backup metrological service comprises backup metering valve 25, backup fuel metering actuating motor 14 and backup fuel metering displacement transducer 15.Active and standby part of fuel metering displacement transducer 8,15 feeds back to gas turbine control unit VII with active and standby part of fuel metering displacement detecting signal 9,13, and gas turbine control unit VII is sent active and standby part of fuel metering actuating motor control signal 10,12 to active and standby part of fuel metering actuating motor 11,14.
Metering fault detects and the reversing unit V, comprise the active and standby part of Access flow meter 18,19 that arranges respectively on A, the B passage, metering selector valve 7, Access flow meter 18,19 is arranged on the lane exit place of batching unit IV, and metering selector valve 7 is arranged on the lane entrance place of batching unit IV.
The unit VI is opened in pressure limiting, can play and improve the firing chamber fuel pressure effect that sprays to.
Combustion machine control unit VII, open the unit VI and be connected by control wiring with compress cell I, pressure reduction reflux unit II, pressure reduction faut detection and reversing unit III, batching unit IV, metering fault detection and reversing unit V, pressure limiting, realize the common co-ordination in each unit by it.
Combustion machine control unit VII is controlled the switching of metering selector valve 7 each passage according to the measured value of primary path flowmeter 18, backup Access flow meter 19, realizes that then main passage metering, backup path metering or active and standby part of passage measure simultaneously.Combustion machine control unit VII is according to the pressure transducer 21 that is arranged on loop inlet ductwork E passage, the F passage, the measured value of the pressure transducer 23 on 22 measured value, the loop export pipeline, control the switching of described pressure reduction backflow valve selector valve 4 each passage, realize that then main pressure reduction refluxes, backup pressure reduction refluxes or active and standby part of pressure reduction refluxes simultaneously.
The linear gauge metering method is adopted in fuel metering in the utility model, and its working principle as shown in Figure 2.Adopt fuel metering valve to carry out fuel metering, it is the measuring apparatus of a kind of metered volume flow and the linear ratio of metering valve profile aperture area, the pressure reduction backflow mechanism that is formed by spring, backflow profile and spring pedestal, can be according to P1 and P2 pressure difference during work, automatically regulate pressure reduction backflow valve profile by spring, it is constant to reach measuring apparatus front and back pressure reduction, i.e. Δ P=const, it is proportional to reach metering valve aperture area and linear displacement, namely
<math><math display = 'block'> <mrow> <mi>Q</mi> <mo>=</mo> <msub> <mi>C</mi> <mi>d</mi> </msub> <mi>A</mi> <msqrt> <mfrac> <mrow> <mn>2</mn> <mi>&Delta;</mi> <mi>P</mi> </mrow> <mi>&rho;</mi> </mfrac> </msqrt> </mrow></math> ?。
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of the present utility model.
Claims (7)
1. triple channel gas turbine liquid fuel measuring apparatus, comprise compress cell I, pressure reduction reflux unit II, pressure reduction faut detection and reversing unit III, batching unit IV, metering fault detection and reversing unit V, reach pressure limiting unlatching unit VI, it is characterized in that:
Described compress cell I comprises centrifugal pump (1), the gear pump (2) that connects successively by pipeline;
Described pressure reduction reflux unit II one end is communicated with the outlet of batching unit IV, the other end comprises pressure reduction loop inlet ductwork and pressure reduction loop export pipeline, pressure reduction loop inlet ductwork is communicated with the outlet of compress cell I, the pipeline communication in pressure reduction loop export pipeline and the compress cell I between centrifugal pump (1) and the gear pump (2);
Described pressure reduction faut detection and reversing unit III, comprise the pressure transducer (21 that is arranged on the inlet ductwork of described pressure reduction loop, 22), be arranged on pressure transducer (23) on the export pipeline of described pressure reduction loop, and pressure reduction backflow valve selector valve (4), described pressure reduction backflow valve selector valve (4) is arranged on the inlet ductwork of described pressure reduction loop;
Described metering fault detects and the reversing unit V, comprise Access flow meter (18,19), metering selector valve (7), described Access flow meter (18,19) is arranged on the lane exit place of batching unit IV, and described metering selector valve (7) is arranged on the lane entrance place of batching unit IV.
2. triple channel gas turbine liquid fuel measuring apparatus according to claim 1 is characterized in that: described pressure reduction reflux unit II comprises main pressure reduction backflow mechanism and backup pressure reduction backflow mechanism.
3. triple channel gas turbine liquid fuel measuring apparatus according to claim 2, it is characterized in that: described main pressure reduction backflow mechanism comprises main pressure reduction backflow valve (16), the one end is communicated with the outlet of batching unit IV, its the other end comprises pressure reduction loop inlet ductwork E passage and pressure reduction loop export pipeline C-channel, the E passage is communicated with the pipeline communication in C-channel and the compress cell I between centrifugal pump (1) and the gear pump (2) with an outlet of pressure reduction backflow valve selector valve (4);
Described backup pressure reduction backflow mechanism comprises backup pressure reduction backflow mechanism (17), the one end is communicated with the outlet of batching unit IV, its the other end comprises pressure reduction loop inlet ductwork F passage and pressure reduction loop export pipeline D passage, the F passage is communicated with the pipeline communication in D passage and the compress cell I between centrifugal pump (1) and the gear pump (2) with another outlet of pressure reduction backflow valve selector valve (4).
4. triple channel gas turbine liquid fuel measuring apparatus according to claim 1, it is characterized in that: described Access flow meter (18,19) comprises primary path flowmeter (18), backup Access flow meter (19), described batching unit IV comprises A, B two passages, each links to each other the import of A, B two passages with an outlet of metering selector valve (7), the analytic accounting measuring mechanism is set on the A channel, and near the outlet port primary path flowmeter (18) is being set; Backup metrological service is set on the B passage and backup Access flow meter (19) is being set near the outlet port.
5. triple channel gas turbine liquid fuel measuring apparatus according to claim 4 is characterized in that: described analytic accounting measuring mechanism comprises main metering valve (24), main fuel metering actuating motor (11), and main fuel metering displacement transducer (8); Described backup metrological service comprises backup metering valve (25), backup fuel metering actuating motor (14) and backup fuel metering displacement transducer (15).
6. triple channel gas turbine liquid fuel measuring apparatus according to claim 1, it is characterized in that: described liquid fuel measuring apparatus also comprises combustion machine control unit VII, opens the unit VI and is connected by control wiring with compress cell I, pressure reduction reflux unit II, pressure reduction faut detection and reversing unit III, batching unit IV, metering fault detection and reversing unit V, pressure limiting.
7. triple channel gas turbine liquid fuel measuring apparatus according to claim 1, it is characterized in that: described compress cell I also comprises safety valve (3), described safety valve (3) is installed in parallel with gear pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220596987 CN202900420U (en) | 2012-11-13 | 2012-11-13 | Liquid fuel metering device of triple channel combustion turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220596987 CN202900420U (en) | 2012-11-13 | 2012-11-13 | Liquid fuel metering device of triple channel combustion turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900420U true CN202900420U (en) | 2013-04-24 |
Family
ID=48121099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220596987 Expired - Lifetime CN202900420U (en) | 2012-11-13 | 2012-11-13 | Liquid fuel metering device of triple channel combustion turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926876A (en) * | 2012-11-13 | 2013-02-13 | 中国科学院工程热物理研究所 | Three-channel combustion gas turbine liquid fuel metering method and device thereof |
-
2012
- 2012-11-13 CN CN 201220596987 patent/CN202900420U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926876A (en) * | 2012-11-13 | 2013-02-13 | 中国科学院工程热物理研究所 | Three-channel combustion gas turbine liquid fuel metering method and device thereof |
| CN102926876B (en) * | 2012-11-13 | 2014-07-02 | 中国科学院工程热物理研究所 | Three-channel combustion gas turbine liquid fuel metering method and device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018041257A1 (en) | Hydraulic system of device for testing comprehensive performance of high-pressure gear flowmeter and testing method | |
| AU2005208298B2 (en) | Natural gas odorant injection system | |
| CN201225920Y (en) | Gas flow standard device combining acoustic speed nozzle method and standard table method | |
| CN103837214A (en) | Combined container type gas flow detection device by pVTt method | |
| CN105699062A (en) | Flow resistance test system of valve flow and method for performing little micro flow test by using the same | |
| ATE433098T1 (en) | FLOW MEASUREMENT | |
| CN102926876B (en) | Three-channel combustion gas turbine liquid fuel metering method and device thereof | |
| CN103837215B (en) | Commutation valve type p.V.T.t method gas flow meter | |
| TW201802438A (en) | Gas supply device capable of measuring flow rate, flowmeter, and flow rate measuring method | |
| WO2003067199A3 (en) | Method and apparatus using turbine flow meter to measure fluid flow therethrough without reference to viscosity | |
| CN206695983U (en) | A kind of air valve performance testing device | |
| CN202900420U (en) | Liquid fuel metering device of triple channel combustion turbine | |
| CN101672683B (en) | Method for online calibrating perforated plate-type steam flow measurement system | |
| CN103343742B (en) | Testing system and testing method for characteristics of plunger pump | |
| CN103900665A (en) | Container combination and reversing valve type pVTt-method gas flow device | |
| CN219996296U (en) | Gas meter verification gas circuit system and gas flow error checking device | |
| CN109724659A (en) | A kind of kitchen range gas flow test macro and test method | |
| CN202867166U (en) | Oil burning pump performance detecting device | |
| CN205826045U (en) | Pitot formula diffuses flow monitoring instrument | |
| CN113340527B (en) | Differential pressure transmitter verification system | |
| CN113720424B (en) | Series-parallel coupling type multi-station water meter calibrating device and method | |
| CN213779523U (en) | Test platform of hydrogen fuel cell hydrogen returning device | |
| CN204731026U (en) | A kind of airplane engine fuel oil analog control system | |
| CN203745052U (en) | Container parallel connection and reversing valve type pVTt method gas flow device | |
| CN107655551B (en) | Calibration device of mass fuel consumption instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |