CN210689733U - Pitot tube mounting device - Google Patents
Pitot tube mounting device Download PDFInfo
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- CN210689733U CN210689733U CN201921420032.1U CN201921420032U CN210689733U CN 210689733 U CN210689733 U CN 210689733U CN 201921420032 U CN201921420032 U CN 201921420032U CN 210689733 U CN210689733 U CN 210689733U
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Abstract
The utility model provides a pitot tube installation device, a be used for installing the pitot tube on the blast pipe, the blast pipe is including the exhaust section casing that is used for forming the exhaust runner and install in the periphery of exhaust section casing and be used for enclosing the heat preservation casing that closes formation heat preservation with exhaust section casing, offer the first mounting hole that is used for supplying the air inlet of pitot tube to pass on the exhaust section casing, offer the second mounting hole that is used for supplying the pressure outlet of pitot tube to pass on the heat preservation casing, pitot tube installation device is including setting up the sealing mechanism who is used for fixed pitot tube and sealed pitot tube and the clearance between the first mounting hole in first mounting hole department, and set up the fixed establishment who is used for fixed pitot tube in second mounting hole department. The pitot tube is fixed through the sealing mechanism and the fixing mechanism, and the air inlet can be guaranteed to be opposite to the airflow direction. The gap between the pitot tube and the first mounting hole is sealed through the sealing mechanism, and high-temperature and high-pressure airflow in the exhaust runner is prevented from entering the heat preservation layer.
Description
Technical Field
The utility model relates to an exhaust flow measurement technical field especially relates to a pitot tube installation device.
Background
When the exhaust flow of the combustion engine is measured, the pitot tube is placed in an exhaust flow channel of an exhaust section shell, an air inlet of the pitot tube faces to the direction of air flow, a pressure gauge is installed at a pressure outlet of the pitot tube, total pressure and static pressure in the exhaust flow channel are respectively measured through the pressure gauge, and finally the gas flow speed in the exhaust flow channel is obtained through calculation.
When a certain type of combustion engine runs, continuous high-temperature high-pressure airflow exists in an exhaust runner. Therefore, a circle of air heat-insulating layer is arranged outside the exhaust section shell and is wrapped by the heat-insulating layer shell, and the exhaust section shell and the heat-insulating layer shell form an exhaust pipe. The pitot tube is difficult to install on the exhaust pipe because the pitot tube needs to pass through the insulating layer shell and the exhaust section shell in sequence to enter the exhaust flow channel.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pitot tube installation device to solve the problem that the pitot tube is difficult to install on the blast pipe.
The utility model adopts the technical scheme as follows:
the utility model provides a pitot tube installation device, be used for installing the pitot tube on the blast pipe, the blast pipe is including the exhaust section casing that is used for forming the exhaust runner and install in the periphery of exhaust section casing and be used for enclosing with the exhaust section casing and close the heat preservation casing that forms the heat preservation, offer the first mounting hole that is used for supplying the air inlet of pitot tube to pass on the exhaust section casing, offer the second mounting hole that is used for supplying the pressure outlet of pitot tube to pass on the heat preservation casing, pitot tube installation device is including setting up in first mounting hole department and being used for fixed pitot tube and the sealing mechanism who seals the clearance between pitot tube and the first mounting hole, and set up in second mounting hole department and be used for the fixed mechanism.
Further, sealing mechanism establishes the sealing cap on the sealing seat including setting up the seal receptacle and the detachably cover in first mounting hole department, offers on the seal receptacle with first mounting hole intercommunication and be used for supplying the hole that the pitot tube passed, offers on the sealing cap with hole intercommunication and be used for supplying the through-hole that the pitot tube passed, sealing mechanism still includes the filler of packing between pitot tube, seal receptacle and sealing cap.
Further, the filler adopts an asbestos rope, and the asbestos rope is wound on the pitot tube.
Further, the end face of the sealing seat is provided with a chamfer for guiding filler into so that the filler fills the gap between the pitot tube, the sealing seat and the sealing cap.
Furthermore, a blocking plate used for blocking the inner hole for sealing when the pitot tube is not installed is arranged between the sealing seat and the sealing cap.
Furthermore, the pitot tube adopts an L-shaped pitot tube, and the L-shaped pitot tube comprises a short tube section for forming an air inlet, a long tube section arranged perpendicular to the short tube section, a bent tube section for connecting the short tube section and the long tube section, and a cross section arranged at one end of the long tube section far away from the short tube section and used for forming a pressure outlet.
Further, the radial dimension of the inner bore is larger than the radial dimension of the through hole, and the radial dimension of the inner bore is larger than the radial dimension of the first mounting hole, so that the elbow section can pass through the inner bore.
Furthermore, the first mounting hole and the second mounting hole are arranged in the same radial direction of the exhaust pipe, so that the air inlet is opposite to the airflow direction of the exhaust flow passage.
Further, the fixing mechanism comprises a bracket which is arranged on the insulating layer shell and is used for supporting ten fields to fix the L-shaped pitot tube.
Further, the fixing mechanism also comprises a cover plate which is arranged at the second mounting hole and is used for covering the second mounting hole provided with the L-shaped pitot tube.
The utility model discloses following beneficial effect has:
the utility model discloses a pitot tube installation device, including sealing mechanism and fixed establishment for install the pitot tube on the blast pipe. The exhaust pipe comprises an exhaust section shell and a heat-insulating layer shell arranged on the periphery of the exhaust section shell, an exhaust flow channel is formed in an inner cavity of the exhaust section shell, and a heat-insulating layer is formed between the heat-insulating layer shell and the exhaust section shell in a surrounding mode. A first mounting hole is formed in the exhaust section shell, and a second mounting hole is formed in the heat insulation layer shell. When the pitot tube is installed, the air inlet of the pitot tube penetrates through the first installation hole to enable the air inlet of the pitot tube to enter the exhaust flow channel, the pitot tube is fixed by the sealing mechanism, a gap between the pitot tube and the first installation hole is sealed, then the heat insulation layer shell is installed on the periphery of the exhaust section shell, the pressure outlet of the pitot tube penetrates through the second installation hole so that the pressure outlet of the pitot tube can be conveniently provided with the pressure gauge, and finally the pitot tube is fixed by the fixing mechanism, so that the pitot tube is installed on the exhaust pipe. The pitot tube is fixed through the sealing mechanism and the fixing mechanism, and the air inlet of the pitot tube can be guaranteed to be over against the airflow direction of the exhaust flow channel. The gap between the pitot tube and the first mounting hole is sealed through the sealing mechanism, so that high-temperature and high-pressure airflow in the exhaust runner can be prevented from entering the heat preservation layer.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is one of the schematic views of a preferred embodiment of the present invention showing a pitot tube mounted on an exhaust pipe;
FIG. 2 is a second schematic view of the preferred embodiment of the present invention showing the pitot tube mounted on the exhaust pipe;
FIG. 3 is one of the schematic views of the sealing mechanism of the preferred embodiment of the present invention;
fig. 4 is a second schematic view of the sealing mechanism of the preferred embodiment of the present invention;
fig. 5 is a schematic view of a closure plate according to a preferred embodiment of the present invention;
FIG. 6 is a schematic view of an L-shaped pitot tube of a preferred embodiment of the invention;
FIG. 7 is a schematic view of the elbow section of the preferred embodiment of the invention passing through the inner bore;
fig. 8 is a schematic view of a stand according to a preferred embodiment of the present invention;
fig. 9 is a schematic view of a cover plate according to a preferred embodiment of the present invention.
Description of reference numerals:
11. an inner bore; 12. a sealing seat; 13. a through hole; 14. a sealing cap; 15. a filler; 16. chamfering; 17. a blocking plate; 18. a support; 19. a cover plate; 2. a pitot tube; 21. an air inlet; 22. a pressure outlet; 23. a short pipe section; 24. a long pipe section; 25. bending the pipe section; 26. ten fields; 31. an exhaust flow passage; 32. an exhaust section housing; 33. a heat-insulating layer; 34. a heat-insulating layer shell; 35. a first mounting hole; 36. and a second mounting hole.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
FIG. 1 is one of the schematic views of a preferred embodiment of the present invention showing a pitot tube mounted on an exhaust pipe; FIG. 2 is a second schematic view of the preferred embodiment of the present invention showing the pitot tube mounted on the exhaust pipe; FIG. 3 is one of the schematic views of the sealing mechanism of the preferred embodiment of the present invention; fig. 4 is a second schematic view of the sealing mechanism of the preferred embodiment of the present invention; fig. 5 is a schematic view of a closure plate according to a preferred embodiment of the present invention; FIG. 6 is a schematic view of an L-shaped pitot tube of a preferred embodiment of the invention; FIG. 7 is a schematic view of the elbow section of the preferred embodiment of the invention passing through the inner bore; fig. 8 is a schematic view of a stand according to a preferred embodiment of the present invention; fig. 9 is a schematic view of a cover plate according to a preferred embodiment of the present invention.
As shown in fig. 1 and 2, the pitot tube mounting device of the embodiment is used for mounting a pitot tube 2 on an exhaust pipe, the exhaust pipe includes an exhaust section casing 32 for forming an exhaust flow passage 31 and an insulating layer casing 34 installed on the periphery of the exhaust section casing 32 and used for enclosing with the exhaust section casing 32 to form an insulating layer 33, a first mounting hole 35 for passing through an air inlet 21 of the pitot tube 2 is opened on the exhaust section casing 32, a second mounting hole 36 for passing through a pressure outlet 22 of the pitot tube 2 is opened on the insulating layer casing 34, the pitot tube mounting device includes a sealing mechanism arranged at the first mounting hole 35 and used for fixing the pitot tube 2 and sealing a gap between the pitot tube 2 and the first mounting hole 35, and a fixing mechanism arranged at the second mounting hole 36 and used for fixing the pitot tube 2.
The utility model discloses a pitot tube installation device, including sealing mechanism and fixed establishment for install pitot tube 2 on the blast pipe. The exhaust pipe comprises an exhaust section shell 32 and an insulating layer shell 34 arranged on the periphery of the exhaust section shell 32, an exhaust flow channel 31 is formed in an inner cavity of the exhaust section shell 32, and an insulating layer 33 is formed between the insulating layer shell 34 and the exhaust section shell 32 in an enclosing mode. A first mounting hole 35 is formed in the exhaust stage casing 32, and a second mounting hole 36 is formed in the heat insulating layer casing 34. When the pitot tube 2 is installed, the air inlet 21 of the pitot tube 2 penetrates through the first installation hole 35 to enable the air inlet 21 of the pitot tube 2 to enter the exhaust flow channel 31, the pitot tube 2 is fixed and a gap between the pitot tube 2 and the first installation hole 35 is sealed through a sealing mechanism, then the heat insulation layer shell 34 is installed on the periphery of the exhaust section shell 32, the pressure outlet 22 of the pitot tube 2 penetrates through the second installation hole 36 so that the pressure outlet 22 of the pitot tube 2 is connected with a pressure gauge, and finally the pitot tube 2 is fixed through a fixing mechanism, so that the pitot tube 2 is installed on an exhaust pipe. The pitot tube 2 is fixed by the sealing mechanism and the fixing mechanism, so that the air inlet 21 of the pitot tube 2 is ensured to be over against the airflow direction of the exhaust flow passage 31. The gap between the pitot tube 2 and the first mounting hole 35 is sealed by the sealing mechanism, so that high-temperature and high-pressure airflow in the exhaust flow passage 31 can be prevented from entering the insulating layer 33. Alternatively, the insulation shell 34 is composed of upper and lower halves, which are connected by fasteners to facilitate mounting the insulation shell 34 around the exhaust section shell 32. Alternatively, in order to ensure the authenticity of the measurement, the pitot tube 2 is fixed by a sealing mechanism and a fixing mechanism, so that the air inlet 21 of the pitot tube 2 is as close to the central position of the exhaust flow passage 31 as possible, thereby preventing the disturbance of turbulent flow.
As shown in fig. 3 and 4, in this embodiment, the sealing mechanism includes a sealing seat 12 disposed at the first mounting hole 35 and a sealing cap 14 detachably sleeved on the sealing seat 12, the sealing seat 12 is provided with an inner hole 11 communicated with the first mounting hole 35 and used for the pitot tube 2 to pass through, the sealing cap 14 is provided with a through hole 13 communicated with the inner hole 11 and used for the pitot tube 2 to pass through, and the sealing mechanism further includes a filler 15 filled among the pitot tube 2, the sealing seat 12 and the sealing cap 14. The sealing seat 12 is welded at the first mounting hole 35 of the exhaust section shell 32, the sealing cap 14 is detachably sleeved on the sealing seat 12, and the pitot tube 2 can sequentially pass through the through hole 13, the inner hole 11 and the first mounting hole 35 to enter the exhaust flow passage 31. The filler 15 can fill the gap between the pitot tube 2, the sealing seat 12 and the sealing cap 14, and the sealing is good and air leakage is avoided. The filler 15 can also buffer external force to avoid the external force from damaging the pitot tube 2. The sealing cap 14 is detachably sleeved on the sealing seat 12, is convenient to disassemble and assemble and can be repeatedly used. Alternatively, the sealing cap 14 is a sealing nut, which is threaded on the sealing seat 12, and can be screwed on the sealing seat 12 by screwing the sealing nut.
In this embodiment, the filler 15 is an asbestos cord wound around the pitot tube 2. The asbestos rope is wound on the pitot tube 2 and is tightly pressed, so that the gap among the pitot tube 2, the sealing seat 12 and the sealing cap 14 can be filled with the asbestos rope. The asbestos cord can bear high temperature for a long time, can be continuously used at high temperature, cannot deform and cannot leak air.
As shown in fig. 4, in the present embodiment, the end surface of the sealing seat 12 is provided with a chamfer 16 for guiding the filler 15 in so that the filler 15 fills the gap between the pitot tube 2, the sealing seat 12 and the sealing cap 14. In order to ensure that the filler 15 can fill the gap between the pitot tube 2, the sealing seat 12 and the sealing cap 14, a chamfer 16 is provided on the end surface of the sealing seat 12 to guide the filler 15 into the gap. Optionally, the angle of the chamfer 16 is 45 °.
As shown in fig. 5, in the present embodiment, a blocking plate 17 for blocking the inner hole 11 to seal when the pitot tube 2 is not mounted is provided between the seal holder 12 and the seal cap 14. When the exhaust gas flow measurement of the combustion engine is not performed, that is, the pitot tube 2 is not mounted on the exhaust pipe, the inner hole 11 may be blocked by the blocking plate 17 for sealing. Alternatively, the blocking plate 17 is a metal gasket.
As shown in fig. 6, in the present embodiment, the pitot tube 2 is an L-shaped pitot tube, and the L-shaped pitot tube includes a short tube section 23 for forming the gas inlet 21, a long tube section 24 disposed perpendicular to the short tube section 23, a bent tube section 25 for connecting the short tube section 23 and the long tube section 24, and a cross section 26 disposed at an end of the long tube section 24 away from the short tube section 23 for forming the pressure outlet 22. The short pipe section 23 and the long pipe section 24 are perpendicular to each other and connected by a bent pipe section 25 to form an L-shape. The air inlet 21 opens into the short pipe section 23 and the pressure outlet 22 opens into the ten-way section 26. The pressure outlet 22 includes a total pressure outlet and a static pressure outlet which are perpendicular to each other to form a cross shape.
In the present embodiment, as shown in fig. 4, the radial dimension of the inner bore 11 is larger than that of the through hole 13, and the radial dimension of the inner bore 11 is larger than that of the first mounting hole 35 to facilitate the passage of the elbow section 25 through the inner bore 11. Because the bend section 25 of the L-shaped pitot tube is arc-shaped, the inner hole 11 needs to be enlarged to ensure that the bend section 25 can pass through the inner hole 11 of the sealing seat 12. However, the enlarged inner hole 11 is provided with the L-shaped pitot tube, and then the clearance is large and difficult to seal, so the method of small clearance at two ends and large clearance in the middle is adopted to meet the requirements of sealing and convenient disassembly and assembly. The small gap between the two ends means that: controlling the radial dimension of the through hole 13, so that the radial dimension of the through hole 13 is slightly larger than that of the L-shaped pitot tube, and reducing the gap between the sealing cap 14 and the L-shaped pitot tube; the radial dimension of the first mounting hole 35 is controlled to make the radial dimension of the first mounting hole 35 slightly larger than that of the L-shaped pitot tube, and the gap between the exhaust section shell 32 and the L-shaped pitot tube is reduced. The large middle gap means: the inner hole 11 of the sealing seat 12 is enlarged so that the elbow section 25 can pass through the inner hole 11, and the L-shaped pitot tube can be conveniently installed and detached. Optionally, the radial dimension of the through hole 13 is 2mm larger than that of the L-shaped pitot tube, the radial dimension of the first mounting hole 35 is 2mm larger than that of the L-shaped pitot tube, and the radial dimension of the inner hole 11 is 6mm larger than that of the L-shaped pitot tube.
As shown in fig. 2, in the present embodiment, the first mounting hole 35 and the second mounting hole 36 are arranged in the same radial direction of the exhaust pipe so that the intake port 21 faces the airflow direction of the exhaust flow passage 31. The first mounting hole 35 and the second mounting hole 36 are arranged in the same radial direction of the exhaust pipe, so that the long pipe section 24 of the L-shaped pitot tube is arranged along the radial direction of the exhaust pipe, and the short pipe section 23 is perpendicular to the long pipe section 24, so that the short pipe section 23 is arranged along the axial direction of the exhaust pipe, and the air inlet 21 is opposite to the airflow direction of the exhaust flow passage 31.
As shown in fig. 8, in this embodiment, the fixing mechanism includes a bracket 18 mounted on the insulating layer housing 34 and supporting the ten-piece housing 26 to fix the L-shaped pitot tube. The bracket 18 is fixed to the insulation shell 34 by fasteners, and the cross section 26 of the L-shaped pitot tube is supported by the bracket 18 to fix the L-shaped pitot tube. The bracket 18 is fixed on the insulating layer shell 34 by a fastener, is convenient to disassemble and assemble and can be repeatedly used. Optionally, the bracket 18 is provided with a U-shaped fork, which supports the cross section 26 of the L-shaped pitot tube. Optionally, the bracket 18 is provided with a clip for securing the cross section 26 of the L-shaped pitot tube.
As shown in fig. 9, in the present embodiment, the fixing mechanism further includes a cover plate 19 installed at the second installation hole 36 and covering the second installation hole 36 where the L-shaped pitot tube is installed. After the L-shaped pitot tube is installed, the cover plate 19 is used for covering the second installation hole 36, so that air leakage of the heat-insulating layer 33 can be reduced, and the heat-insulating capacity of the heat-insulating layer 33 is improved. Optionally, the cover plate 19 is provided with a reserved hole to facilitate the installation and removal of the L-shaped pitot tube.
In specific implementation, the installation process of the pitot tube 2 is as follows:
1) a first mounting hole 35 is provided in the exhaust stage housing 32.
2) The seal holder 12 is welded at the first mounting hole 35.
3) The sealing nut was fitted over the pitot tube 2, and then the asbestos cord was wound around the pitot tube 2.
4) The pitot tube 2 is inserted into the inner hole 11 of the seal holder 12, the seal nut is tightened on the seal holder 12, and the gap between the pitot tube 2, the seal holder 12 and the seal nut is filled with the filler 15 by tightening the seal nut.
5) A second mounting hole 36 is formed in the insulating layer housing 34, the insulating layer housing 34 is mounted on the periphery of the exhaust section housing 32, and the pressure outlet 22 of the pitot tube 2 passes through the second mounting hole 36.
6) The second mounting hole 36 is covered with a cover plate 19.
7) The pitot tube 2 is supported by a bracket 18, and the bracket 18 is fixed on the insulating layer shell 34 by bolts.
The disassembly process of the pitot tube 2 is as follows:
1) the bracket 18 and the cover plate 19 are removed, and the insulating layer housing 34 is removed.
2) The sealing nut is unscrewed and the pitot tube 2 is taken out. The asbestos cord is picked out and the inner hole 11 is plugged with a metal gasket.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pitot tube mounting device for mounting a pitot tube (2) on an exhaust pipe, the exhaust pipe including an exhaust section case (32) for forming an exhaust flow passage (31) and an insulating layer case (34) mounted on the periphery of the exhaust section case (32) and enclosing the exhaust section case (32) to form an insulating layer (33), characterized in that,
a first mounting hole (35) for the air inlet (21) of the pitot tube (2) to pass through is formed in the exhaust section shell (32), a second mounting hole (36) for the pressure outlet (22) of the pitot tube (2) to pass through is formed in the heat insulation layer shell (34),
the pitot tube mounting device includes a sealing mechanism provided at the first mounting hole (35) for fixing the pitot tube (2) and sealing a gap between the pitot tube (2) and the first mounting hole (35), and a fixing mechanism provided at the second mounting hole (36) for fixing the pitot tube (2).
2. The pitot tube mounting device of claim 1,
sealing mechanism establishes including setting up seal receptacle (12) and the detachably cover that first mounting hole (35) were located seal cap (14) on seal receptacle (12), seted up on seal receptacle (12) with first mounting hole (35) intercommunication is used for supplying hole (11) that pitot tube (2) passed, seted up on seal cap (14) with hole (11) intercommunication is used for supplying through-hole (13) that pitot tube (2) passed, sealing mechanism is still including filling pitot tube (2), seal receptacle (12) and filler (15) between seal cap (14).
3. The pitot tube mounting device of claim 2,
the filler (15) is made of an asbestos rope, and the asbestos rope is wound on the pitot tube (2).
4. The pitot tube mounting device of claim 2,
the end face of the sealing seat (12) is provided with a chamfer (16) for guiding the filler (15) into so that the filler (15) fills the gap between the pitot tube (2), the sealing seat (12) and the sealing cap (14).
5. The pitot tube mounting device of claim 2,
a blocking plate (17) used for blocking the inner hole (11) for sealing when the pitot tube (2) is not installed is arranged between the sealing seat (12) and the sealing cap (14).
6. The pitot tube mounting device of claim 2,
the pitot tube (2) adopts an L-shaped pitot tube, and the L-shaped pitot tube comprises a short tube section (23) for forming the air inlet (21), a long tube section (24) arranged perpendicular to the short tube section (23), a bent tube section (25) for connecting the short tube section (23) and the long tube section (24), and ten fields (26) arranged at one end of the long tube section (24) far away from the short tube section (23) and used for forming the pressure outlet (22).
7. The pitot tube mounting device of claim 6,
the radial dimension of hole (11) is greater than the radial dimension of through-hole (13), just the radial dimension of hole (11) is greater than the radial dimension of first mounting hole (35), so that bend section (25) passes hole (11).
8. The pitot tube mounting device of claim 6,
the first mounting hole (35) and the second mounting hole (36) are arranged in the same radial direction of the exhaust pipe, so that the air inlet (21) is opposite to the airflow direction of the exhaust flow passage (31).
9. The pitot tube mounting device of claim 6,
the fixing mechanism comprises a bracket (18) which is arranged on the insulating layer shell (34) and is used for supporting the ten-piece field (26) to fix the L-shaped pitot tube.
10. The pitot tube mounting device of claim 9,
the fixing mechanism further comprises a cover plate (19) which is arranged at the second mounting hole (36) and used for covering the second mounting hole (36) where the L-shaped pitot tube is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420032.1U CN210689733U (en) | 2019-08-29 | 2019-08-29 | Pitot tube mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420032.1U CN210689733U (en) | 2019-08-29 | 2019-08-29 | Pitot tube mounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210689733U true CN210689733U (en) | 2020-06-05 |
Family
ID=70898734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921420032.1U Active CN210689733U (en) | 2019-08-29 | 2019-08-29 | Pitot tube mounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210689733U (en) |
-
2019
- 2019-08-29 CN CN201921420032.1U patent/CN210689733U/en active Active
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