CN213019742U - Combustion pulsation pressure measuring system with cooling damping device - Google Patents
Combustion pulsation pressure measuring system with cooling damping device Download PDFInfo
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- CN213019742U CN213019742U CN202021786107.0U CN202021786107U CN213019742U CN 213019742 U CN213019742 U CN 213019742U CN 202021786107 U CN202021786107 U CN 202021786107U CN 213019742 U CN213019742 U CN 213019742U
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Abstract
The utility model discloses a take cooling damping device's burning pulsating pressure measurement system, include: the device comprises a pulsating pressure sensor, a mounting seat and a pressure guiding pipe; the pulsating pressure sensor is arranged on the combustion chamber cover shell through the mounting seat; the measuring end of the pulsating pressure sensor is communicated with the interior of the combustion chamber through the pressure guiding pipe; the system also comprises a cooling damping device, a cooling gas main pipe and a cooling gas branch pipe; one end of the cooling gas main pipe is arranged on the compressor shell, the other end of the cooling gas main pipe is communicated with a cooling gas inlet of the cooling damping device, and a damping element is arranged in the cooling damping device; one end of the cooling gas branch pipe is communicated with the mounting seat, and the other end of the cooling gas branch pipe is communicated with a cooling gas outlet of the cooling damping device; the utility model discloses the advantage lies in that the cooling air supply that connects is gas turbine compressor exhaust, can continuously cool off the sensor effectively, has not only obtained comparatively accurate data, effectively prolongs the sensor life-span.
Description
Technical Field
The utility model relates to a high temperature gas pressure measurement technical field especially relates to a take cooling damping device's burning pulsation pressure measurement system.
Background
The combustion pulsation pressure measuring system is one of important subsystems in a gas turbine control system, the function of the combustion pulsation pressure measuring system is to measure the dynamic pressure in a combustion chamber, and a measuring signal is transmitted to the control system to automatically adjust the pressure fluctuation within an allowable range so as to avoid the combustion oscillation from influencing the service life of the combustion chamber. The conventional measurement technique in the industry today is to transmit the pressure inside the combustion chamber to a piezoelectric transducer mounted outside the combustion chamber housing through a pressure manifold. Because the inside of the combustion chamber is a high-temperature area when the gas turbine runs, the pressure guide pipe transmits pressure and conducts heat to the external sensor and the mounting seat thereof, the long-term working influences the service life of the sensor, certain heat loss is caused, and the thermal stress generated at high temperature has higher requirements on the material and the strength of the mounting seat and the connecting piece thereof.
Chinese patent CN103048142A discloses a cylinder pressure sensor for engine bench test, which comprises: the device comprises a base, a water seal piece, a seal piece pressing plate, a pressure sensor shell, a compression spring, a pressure acquisition rod, a retaining piece, a sensing element, a set screw and a cylinder cover; an annular cooling cavity is formed in the base, and a cooling water inlet and a cooling water outlet which are communicated with the annular cooling cavity are formed in the base; the bottom of the pressure acquisition rod is provided with a cooling cavity, and the top of the pressure acquisition rod is provided with a cooling liquid inlet and a cooling liquid outlet which are communicated with the cooling cavity. The liquid cooling structure is additionally arranged in the technical scheme, the service life of the sensor is prolonged, the coking condition is reduced, but the structure adopts an external water cooling system, corresponding equipment and a power source are additionally arranged, and the overall cost control is not facilitated.
Chinese patent CN111103143A discloses a thermal protection mounting structure of a pressure measuring sensor in a narrow space, which comprises a supporting seat, a pressure measuring conduit and a clamp; the upper part of the supporting seat is an L-shaped fixed plate, and the lower part of the supporting seat is a supporting base; one end of the supporting base is connected to the bottom of the fixing plate, and the other end of the supporting base is fixed on the wall surface of the combustion chamber; the clamp sleeve is arranged on the outer side of the pressure measuring sensor, and the clamp joint is arranged on the side wall of the fixing plate; one end of the pressure measuring guide pipe is connected with the detection end of the pressure measuring sensor, the other end of the pressure measuring guide pipe is communicated with the inside of the combustion chamber, the middle of the pressure measuring guide pipe is coiled, and the pressure measuring guide pipe bypasses the supporting seat. Above-mentioned technical scheme adopts and to arrange the sensor in the casing outside completely, leads to the sensor measuring end through longer and the complicated pipeline of structure with the gas, has obtained certain cooling effect, and the structure is constituteed simply, but the data that this kind of method measured receive the influence of temperature gradient change, and it is great with actual conditions discrepancy.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a take burning pulsation pressure measurement system of cooling damping device can solve above-mentioned problem.
For this purpose, the utility model is implemented by the following technical scheme.
A combustion pulsation pressure measurement system with a cooling damping device, comprising: the device comprises a pulsating pressure sensor, a mounting seat and a pressure guiding pipe; the pulsating pressure sensor is arranged on the combustion chamber cover shell through the mounting seat; the combustion chamber cover shell is provided with at least one pulsating pressure sensor; the measuring end of the pulsating pressure sensor is communicated with the interior of the combustion chamber through the pressure guiding pipe;
the system also comprises a cooling damping device, a cooling gas main pipe and a cooling gas branch pipe;
one end of the cooling gas main pipe is arranged on the compressor shell and is communicated with the inside of the compressor; the other end of the cooling gas main pipe is communicated with a cooling gas inlet of the cooling damping device, and a damping element is arranged in the cooling damping device;
one end of the cooling gas branch pipe is communicated with the cavity inside the mounting seat, and the other end of the cooling gas branch pipe is communicated with a cooling gas outlet of the cooling damping device.
Furthermore, the mounting seat is formed by sleeving the tail ends of two hollow cylinders, and a columnar cavity is formed in the middle of the mounting seat; an opening at the upper end of the mounting seat forms a cooling gas inlet and is connected with the cooling gas branch pipe, and an opening at the side surface of the upper part of the mounting seat forms a sensor cable opening; the lower part of the mounting seat is positioned in the combustion chamber, and a pressure guide pipe interface is formed at the opening at the tail end; the pulsating pressure sensor is inserted into the cavity, and the measuring end is in sealing fit with the inner wall of the pressure leading pipe connector.
Furthermore, a plurality of cooling air outlets are uniformly distributed on the lower part of the mounting seat along the circumferential direction; the pulsating pressure sensor and the inner wall of the mounting seat are separated by a gap to form a clamping cavity, and the clamping cavity is communicated with the interior of the combustion chamber through the cooling gas outlet.
Further, a plurality of damping elements are installed in the cooling damping device, and the damping elements are drum type fluid dampers; and the air inlet end of the damping element is connected in parallel with the cooling gas inlet, and the air outlet end of the damping element is connected with the cooling gas outlet respectively.
Further, the cooling gas outlets correspond to the pulsating pressure sensors one to one.
The utility model has the advantages of as follows:
the utility model discloses the cooling air supply that connects is the gas turbine compressor exhaust, and air supply temperature is far less than the inside temperature of combustion chamber, and air supply pressure is a little higher than combustion chamber cover shell internal pressure, consequently can continuously cool off the sensor effectively to reduce the temperature gradient change of drawing the pipe, not only obtained comparatively accurate data, reduced the external device structure simultaneously, effectively prolong the sensor life-span, prevent the emergence of coking.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only one or several embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive efforts.
The distribution positions and distribution numbers of the same structures shown in the drawings are only for convenience of describing the invention, but do not indicate or imply that the structures referred to must have a specific orientation, distribution number and therefore should not be construed as limiting the invention.
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a structural view of the installation position of the pulsating pressure sensor of the present invention;
FIG. 3 is a front view of the cooling damper apparatus of the present invention;
FIG. 4 is a view taken along line A-A of FIG. 3;
FIG. 5 is a top view of the cooling damper device of the present invention;
fig. 6 is a view from B-B in fig. 5.
In the figure:
1-pulsating pressure sensor; 2-mounting a base; 3-a pressure guiding pipe; 4-cooling the damping device; 5-a damping element; 6-cooling the gas main; 7-cooling the gas manifold; 201-cooling gas inlet; 202-sensor cable opening; 203-cooling gas outlet; 204-pressure pipe leading interface; 601-cooling gas inlet; 701-cooling gas outlet.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper end", "lower end", "upper portion", "lower portion", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings.
It should also be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be further described with reference to the accompanying fig. 1-6.
Example 1
A combustion pulsation pressure measurement system with a cooling damping device, comprising: the device comprises a pulsating pressure sensor 1, a mounting seat 2 and a pressure guiding pipe 3; the pulsating pressure sensor 1 is arranged on the combustion chamber cover shell through a mounting seat 2; the combustion chamber cover shell is provided with 3 pulsating pressure sensors 1; the measuring end of the pulsating pressure sensor 1 is communicated with the interior of the combustion chamber through a pressure leading pipe 3;
as shown in fig. 1, the system further comprises a cooling damping device 4, a cooling gas manifold 6 and a cooling gas branch pipe 7;
one end of a cooling gas main pipe 6 is arranged on the compressor shell and is communicated with the inside of the compressor; the other end of the cooling gas main pipe 6 is communicated with a cooling gas inlet 601 of the cooling damping device 4, and a damping element 5 is arranged in the cooling damping device 4;
one end of the cooling gas branch pipe 7 is communicated with the cavity inside the mounting seat 2, and the other end is communicated with a cooling gas outlet 701 of the cooling damping device 4. Preferably, as shown in fig. 3 to 6, 3 damping elements 5 are installed in the cooling damping device 4, and the damping elements 5 are drum type fluid dampers; the air inlet end of the damping element 5 is connected in parallel with the cooling gas inlet 601, the air outlet end is connected with a cooling gas outlet 701 respectively, the cooling gas outlets 701 correspond to the pulsating pressure sensors 1 one by one, and the three outlets are connected with the mounting base 2 through 3 branch pipes respectively.
Preferably, as shown in fig. 2, the mounting base 2 is formed by sleeving the ends of two hollow cylinders, and a cylindrical cavity is formed in the middle; an opening at the upper end of the mounting seat 2 forms a cooling gas inlet 201 and is connected with the cooling gas branch pipe 7, and an opening at the side surface of the upper part of the mounting seat 2 forms a sensor cable opening 202; the sensor cable is routed out of the port. The lower part of the mounting seat 2 is positioned in the combustion chamber, and a pressure guide pipe interface 204 is formed at the opening at the tail end; the pulsating pressure sensor 1 is inserted into the cavity, and the measuring end is in sealing fit with the inner wall of the pressure guiding pipe interface 204. A plurality of cooling air outlets 203 are uniformly distributed at the lower part of the mounting seat 2 along the circumferential direction, as shown in fig. 2, 3 air outlet holes are provided in total, and a plurality of cooling air outlets are axially arranged in each row; a gap is reserved between the pulsating pressure sensor 1 and the inner wall of the mounting seat 2 to form a clamping cavity, and the clamping cavity is communicated with the interior of the combustion chamber through a cooling gas outlet 203.
Cooling process
High-pressure gas in the gas compressor enters a cooling damping device 4 through a cooling gas header pipe 6, enters a damping element 5 in three paths, enters a clamping cavity of the pulsation pressure sensor 1 and the mounting seat 2 through corresponding cooling gas branch pipes 7, cools the sensor, and is discharged into a combustion chamber through a cooling gas outlet 203.
Through design calculation, the pipe diameter of the cooling gas inlet 601 is determined to be 12mm, and the pipe diameter of the cooling gas outlet 701 is determined to be 8 mm. When the gas turbine runs, the highest temperature of a combustion chamber is about 1900 ℃, when a conventional combustion pulsating pressure measuring system is used, the highest temperature outside a combustion pulsating pressure sensor is measured in real time and is about 650 ℃, when the measuring system with the cooling damping device of the embodiment is used, the temperature of a cooling air source (air exhaust of a compressor) is about 450 ℃, the highest temperature outside the combustion pulsating pressure sensor is measured in real time and is about 480 ℃, the cooling effect is obvious, and the design requirements are completely met.
The above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (5)
1. A combustion pulsation pressure measurement system with a cooling damping device, comprising: the device comprises a pulsating pressure sensor (1), a mounting seat (2) and a pressure guiding pipe (3); the pulsating pressure sensor (1) is arranged on a combustion chamber cover shell through the mounting seat (2); the combustion chamber housing is provided with at least one pulsating pressure sensor (1); the measuring end of the pulsating pressure sensor (1) is communicated with the interior of the combustion chamber through the pressure guiding pipe (3);
the system is characterized by also comprising a cooling damping device (4), a cooling gas main pipe (6) and a cooling gas branch pipe (7);
one end of the cooling gas main pipe (6) is arranged on the compressor shell and is communicated with the inside of the compressor; the other end of the cooling gas main pipe (6) is communicated with a cooling gas inlet (601) of the cooling damping device (4), and a damping element (5) is arranged in the cooling damping device (4);
one end of the cooling gas branch pipe (7) is communicated with the cavity inside the mounting seat (2), and the other end of the cooling gas branch pipe is communicated with a cooling gas outlet (701) of the cooling damping device (4).
2. The combustion pulsation pressure measuring system according to claim 1, wherein the mounting base (2) is formed by sleeving the ends of two hollow cylinders, and a cylindrical cavity is formed in the middle; a cooling gas inlet (201) is formed in an opening at the upper end of the mounting seat (2) and is connected with the cooling gas branch pipe (7), and a sensor cable opening (202) is formed in an opening at the side face of the upper part of the mounting seat (2); the lower part of the mounting seat (2) is positioned in the combustion chamber, and a pressure guide pipe interface (204) is formed at the opening at the tail end; the pulsating pressure sensor (1) is inserted into the cavity, and the measuring end is in sealing fit with the inner wall of the pressure pipe interface (204).
3. The combustion pulsation pressure measuring system according to claim 2, wherein a plurality of cooling gas outlets (203) are uniformly distributed on the lower portion of the mounting seat (2) along the circumferential direction; the pulsating pressure sensor (1) and the inner wall of the mounting seat (2) are provided with a gap to form a clamping cavity, and the clamping cavity is communicated with the interior of the combustion chamber through the cooling gas outlet (203).
4. The combustion pulsation pressure measuring system according to claim 1, wherein a plurality of the damping elements (5) are installed in the cooling damping device (4), the damping elements (5) being drum type fluid dampers; the air inlet end of the damping element (5) is connected in parallel with the cooling gas inlet (601), and the air outlet end of the damping element is connected with the cooling gas outlet (701) respectively.
5. The combustion pulse pressure measurement system according to claim 4, wherein the cooling gas outlets (701) are in one-to-one correspondence with the pulse pressure sensors (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786107.0U CN213019742U (en) | 2020-08-24 | 2020-08-24 | Combustion pulsation pressure measuring system with cooling damping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786107.0U CN213019742U (en) | 2020-08-24 | 2020-08-24 | Combustion pulsation pressure measuring system with cooling damping device |
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| CN213019742U true CN213019742U (en) | 2021-04-20 |
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| CN202021786107.0U Active CN213019742U (en) | 2020-08-24 | 2020-08-24 | Combustion pulsation pressure measuring system with cooling damping device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493161A (en) * | 2022-11-15 | 2022-12-20 | 中国航发沈阳发动机研究所 | Gas turbine afterburner pressure pulsation sensor mounting structure |
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2020
- 2020-08-24 CN CN202021786107.0U patent/CN213019742U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493161A (en) * | 2022-11-15 | 2022-12-20 | 中国航发沈阳发动机研究所 | Gas turbine afterburner pressure pulsation sensor mounting structure |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 1188, Dongxin Road, Hangzhou, Zhejiang, 310022 Patentee after: Hangzhou Steam Turbine Holding Co.,Ltd. Address before: No. 1188, Dongxin Road, Hangzhou, Zhejiang, 310022 Patentee before: HANGZHOU TURBINE POWER GROUP CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |