CN218240086U - Multi-point pitot tube - Google Patents
Multi-point pitot tube Download PDFInfo
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- CN218240086U CN218240086U CN202222678233.XU CN202222678233U CN218240086U CN 218240086 U CN218240086 U CN 218240086U CN 202222678233 U CN202222678233 U CN 202222678233U CN 218240086 U CN218240086 U CN 218240086U
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- pitot tube
- adapter
- tube
- pitot
- point
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Abstract
The utility model relates to a multi-point pitot tube, which comprises a first pitot tube, a second pitot tube, an adapter and a pitot tube embedded part; the first pitot tube and the second pitot tube are both arranged in the pipeline, one ends of the first pitot tube and the second pitot tube are respectively positioned at different depths in the pipeline, and the other ends of the first pitot tube and the second pitot tube penetrate through the pitot tube embedded parts and are connected with the transfer steel pipe; the first pitot tube comprises a front section and a rear section, and the front section and the rear section of the first pitot tube are respectively inserted on the adapter and are connected with each other through the adapter. The multi-point pitot tube is convenient to install and disassemble in a place with limited space.
Description
Technical Field
The utility model relates to a multipoint mode pitot tube belongs to air pipe, industrial pipeline or pitot tube technical field for the stove flue.
Background
In the industrial production process of coal-fired power plants, chemical plants, steel plants and the like, toxic and harmful gas pollutants such as nitrogen oxides, sulfur dioxide, carbon monoxide and the like are inevitably generated, and if the gaseous pollutants are directly discharged into the atmosphere, the ecological environment causes extremely serious pollution.
The multi-point pitot tube can sample the total pressure and static pressure of the gases in the pipeline and send the gases to an analysis system to detect the flow rate of the gaseous pollutants. Thereby providing parameter basis for the discharge measurement and the purification treatment of the gaseous pollutants in the production process and preventing the damage to the ecological environment.
The existing multi-point pitot tube is generally formed by combining two or more single-point pitot tubes, for example, patent CN201621433575.3 discloses a multi-tube pitot tube, in which a plurality of S-shaped pitot tubes, i.e. a plurality of single-point pitot tubes, are arranged.
The existing single-point pitot tube is made of a complete steel tube, the length is long, the whole steel tube needs to be stretched into a pipeline during installation, enough space cannot be provided in places with limited structures for installation and disassembly, and the installation and disassembly are inconvenient.
Disclosure of Invention
The utility model discloses a solve the problem that exists among the prior art, provide a convenient multi-point type pitot tube of installing and dismantling in the limited place in space.
In order to achieve the above purpose, the utility model provides a technical scheme does: a multi-point pitot tube comprises a first pitot tube, a second pitot tube, an adapter and a pitot tube embedded part; the first pitot tube and the second pitot tube are both arranged in the pipeline to be tested, the head ends of the first pitot tube and the second pitot tube are respectively positioned at different depth positions in the pipeline to be tested, and the other ends of the first pitot tube and the second pitot tube penetrate through the pitot tube embedded parts and are connected with the transfer steel pipe; the first pitot tube is formed by splicing at least two sections, and the two adjacent sections which are spliced mutually are connected with each other through an adapter; the first pitot tube is provided with at least one group, and when multiple groups of pitot tubes are arranged, the head ends of the multiple groups of first pitot tubes are positioned at different depth positions in the pipeline to be tested.
The technical scheme is further designed as follows: the adapter comprises a sleeve with internal threads, and a first adapter and a second adapter which are mutually butted, wherein the first adapter and the second adapter are provided with connecting through holes at mutually corresponding positions, and two sections spliced by the first pitot tube are respectively inserted into the connecting through holes of the first adapter and the second adapter; the second adapter is equipped with the external screw thread that matches with sheathed tube internal thread, the sleeve pipe front end is equipped with annular card limit, and the sleeve pipe cover is established at the adapter periphery and with second adapter threaded connection, and the card limit of sleeve pipe tip supports on the preceding terminal surface of first adapter.
Still be equipped with fixing hole on the first adapter, the second adapter is equipped with the screw hole with fixing hole department of correspondence, and first adapter and second adapter pass fixing hole back spiro union screw hole and link together through locking bolt.
And a sealing gasket is arranged at the butt joint of the first adapter and the second adapter.
The multi-point type pitot tube also comprises a pitot tube protective tube, wherein the pitot tube protective tube is sleeved on the first pitot tube and the second pitot tube, one end of the pitot tube protective tube is inserted into the pitot tube embedded part and is fixedly connected with the pitot tube embedded part, and the other end of the pitot tube protective tube extends out of the pitot tube embedded part.
And supporting steel bars are arranged in the pitot tube protective pipe, one end of each supporting steel bar extends into the pitot tube protective pipe and is fixedly connected with the pitot tube protective pipe, and the other end of each supporting steel bar extends out of the pitot tube protective pipe and is connected with an adjacent second adapter.
Be equipped with on the second adapter of being connected with the support reinforcement and connect the blind hole, the support reinforcement inserts in the connection blind hole.
The supporting blocks are arranged in the pitot tube embedded parts, and the pitot tube protecting tubes are supported on the supporting blocks.
And one end of the pitot tube embedded part is provided with a connecting flange and is fixedly connected with the first pitot tube and the second pitot tube through the connecting flange.
And the outer wall of the pitot tube embedded part is welded with the contact surface of the flue wall.
The beneficial effects of the utility model reside in that:
the utility model discloses a multipoint mode pitot tube is because first, second pitot tube are located the different degree of depth department in the pipeline, consequently can measure two different measurement stations on the direction of depth simultaneously, presses and static pressure through measuring totally, and then detects gaseous pollutant's velocity of flow.
The utility model discloses adopt the adapter to splice to the longer pitot tube of length, reduced the length of every section pitot tube, can satisfy the installation of the long pitot tube under the space is limited.
Drawings
FIG. 1 is an overall view of a multi-point pitot tube of the present invention;
FIG. 2 is a cross-sectional view of the multi-point pitot tube of the present invention;
FIG. 3 is a right side view of the multi-point pitot tube of the present invention;
FIG. 4 is a left side view of the multi-point pitot tube of the present invention;
fig. 5 is an overall view of a multi-point pitot tube embedded part in the utility model.
1-a first pitot tube; 2-an adapter; 21-cannula, 22-first adapter, 23-second adapter, 3-second pitot tube; 4-a pitot tube protective tube; 5-a pitot tube embedded part; 6-connecting a flange; 7-transferring the steel pipe; 8-locking the bolt; 9-supporting the steel bars; 10-embedded part supporting block.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows:
as shown in fig. 1, a multi-point pitot tube of the present embodiment includes a first pitot tube 1, a second pitot tube 3, an adapter 2, and a pitot tube embedded part 5; the embodiment can be applied to ventilation pipelines, industrial pipelines or furnace and kiln flues and other pipelines, and takes the flue as an example, a horizontal hole with the diameter of 102mm is formed on the wall of the flue; horizontally inserting the pitot tube embedded part 5 into the horizontal hole, and fully welding the contact surface of the outer pipe diameter wall of the pitot tube embedded part 5 and the flue wall.
The first pitot tube 1 and the second pitot tube 3 are arranged in the flue, one ends of the first pitot tube 1 and the second pitot tube 3 are respectively positioned at different depths in the pipeline, the other ends of the first pitot tube 1 and the second pitot tube 3 penetrate through the pitot tube embedded part 5 to be connected with the transfer steel pipe 7 and fixedly connected with the pitot tube embedded part 5, and the transfer steel pipe 7 is used for connecting a clamping sleeve joint or a fluororubber pipe and the like; in the embodiment, the first pitot tube 1 is only provided with one group and is formed by splicing a front section and a rear section, and the front section and the rear section of the first pitot tube 1 are respectively inserted on the adapter 2 and are mutually connected through the adapter 2; when the space is limited, the front section of the first pitot tube 1 extends into the flue from the pitot tube embedded part 5, and then is connected with the rear section of the first pitot tube 1 through the adapter 2, so that the front section and the rear section of the first pitot tube 1 are mutually communicated; therefore, the length of each section of pitot tube is reduced, and the installation of the long pitot tube under the limited space can be met.
Example two:
the multi-point pitot tube structure of the present embodiment is substantially the same as the first embodiment, except that, as shown in fig. 2, the adapter 2 includes a sleeve 21 with an internal thread, and a first adapter 22 and a second adapter 23 that are butted with each other, the first adapter 22 and the second adapter 23 are provided with connecting through holes at positions corresponding to each other, and a front section and a rear section of the first pitot tube 1 are respectively inserted into the connecting through holes of the first adapter 22 and the second adapter 23 and butted with each other; second adapter 23 is equipped with the external screw thread that matches with the internal thread of sleeve pipe 21, the sleeve pipe 21 front end is equipped with annular card limit, and the sleeve pipe 21 cover is established at first adapter 22 and second adapter 23 periphery and with second adapter 23 threaded connection, the card limit of sleeve pipe 21 tip supports on the preceding terminal surface of first adapter 11 to compress tightly first adapter 22 and second adapter 23 together.
The first adapter 22 is also provided with a fixing through hole, the second adapter 23 is provided with a threaded hole at the position corresponding to the fixing through hole, and the first adapter 22 and the second adapter 23 are also connected together by screwing the threaded hole after the locking bolt 8 penetrates through the fixing through hole, so that secondary locking is realized, and looseness caused by severe vibration is prevented; the butt joint interface of the first adapter 22 and the second adapter 23 is provided with a high-temperature resistant telescopic sealing gasket, so that the contact air tightness is ensured.
In the embodiment, the first pitot tube 1 and the second pitot tube 3 are two back-to-back S-shaped pitot tubes made of 316L stainless steel, the outer diameter of the tube is 14mm, and the inner diameter of the tube is 8mm; the large-diameter pipe is favorable for later maintenance and blockage dredging, the whole pitot tube is thermally sprayed with the wear-resistant and corrosion-resistant material, the coating can resist the temperature of over 420 ℃, the section of an S-shaped elbow air inlet of the pitot tube is vertically downward when the coating is installed, and then the pitot tube is fixed on the pitot tube embedded part 5 through bolts.
The device also comprises a pitot tube protective tube 4, wherein the pitot tube protective tube 4 is sleeved on the first pitot tube 1 and the second pitot tube 3, one end of the pitot tube protective tube 4 is inserted into the pitot tube embedded part 5 and is fixedly connected with the pitot tube embedded part 5, and the other end of the pitot tube protective tube extends out of the pitot tube embedded part 5. The pitot tube 4 can enhance the flex resistance and wear resistance of the pitot tube.
Combine fig. 2 and fig. 3 to show, be equipped with support reinforcement 9 in the pitot tube pillar 4, 9 one end of support reinforcement stretch into the pitot tube pillar 4 and with 4 fixed connection of pitot tube pillar, the other end stretches out the pitot tube pillar 4 and is connected with second adapter 23, and second adapter 23 is being equipped with near support reinforcement 9 one side and is connecting the blind hole, support reinforcement 9 inserts in this connection blind hole, is connected with second adapter 23.
As shown in fig. 4 and 5, a supporting block 10 is arranged inside the front end of the pitot tube embedded part 5, the supporting block 10 is horizontally arranged, the pitot tube protective tube 4 is supported on the supporting block 10, and the supporting steel bars 9 and the supporting block 10 provide an upward supporting force for the whole pitot tube, so that the pitot tube can still keep a horizontal state under the influence of gravity and gas flow velocity, and the measurement accuracy of the gas flow velocity is ensured.
And one end of the pitot tube embedded part 5 is provided with a connecting flange 6 and is fixedly connected with the first pitot tube 1 and the second pitot tube 3 through the connecting flange 6.
During measurement, a 8mm cutting sleeve joint or a fluororubber pipe is used for connecting the pitot tube switching steel pipe 7 and the flow meter; when airflow exists in the flue, the airflow of the two measuring points respectively flows into the S-shaped elbows below the first pitot tube 1 and the second pitot tube 3, enters the pitot tube full-pressure tube and is then conveyed to the flow velocity meter; the static pressure enters the pitot tube static pressure pipe through an S-shaped elbow above the pitot tube 1 and the pitot tube 2 and is conveyed to the flow meter; the flow rate parameters can be measured normally by calibrating the calibration instrument and setting the calibration coefficient.
Example three:
a further structural design of this embodiment is that in the multi-point pitot tube structure of this embodiment, two sets of first pitot tubes are provided, and one set of second pitot tubes is provided. The first pitot tube and the second pitot tube are arranged in the pipeline to be tested, the head ends of the first pitot tube and the second pitot tube are respectively located at different depth positions in the pipeline to be tested, and the other ends of the first pitot tube and the second pitot tube penetrate through the pitot tube embedded parts to be connected with the adapter steel pipe. One of the two groups of first pitot tubes is formed by splicing two sections, the other group is formed by splicing three sections, and the splicing sections are mutually connected through an adapter. Therefore, three different measuring points in the depth direction can be measured simultaneously.
The technical scheme of the utility model is not limited to above-mentioned each embodiment, and the technical scheme that all adopt to equate substitution mode to obtain all falls the utility model discloses the within range that claims.
Claims (10)
1. A multi-point pitot tube, comprising: the device comprises a first pitot tube, a second pitot tube, an adapter and a pitot tube embedded part; the first pitot tube and the second pitot tube are both arranged in the pipeline to be tested, the head ends of the first pitot tube and the second pitot tube are respectively positioned at different depth positions in the pipeline to be tested, and the other ends of the first pitot tube and the second pitot tube penetrate through the pitot tube embedded parts and are connected with the transfer steel pipe; the first pitot tube is formed by splicing at least two sections, and the two adjacent sections which are spliced mutually are connected with each other through an adapter; the first pitot tube is provided with at least one group, and when multiple groups of pitot tubes are arranged, the head ends of the multiple groups of first pitot tubes are positioned at different depth positions in the pipeline to be tested.
2. The multi-point pitot tube of claim 1, wherein: the adapter comprises a sleeve with an internal thread, and a first adapter and a second adapter which are mutually butted, wherein connecting through holes are formed in the positions, corresponding to each other, of the first adapter and the second adapter, and two sections spliced by the first pitot tube are respectively inserted into the connecting through holes of the first adapter and the second adapter; the second adapter is equipped with the external screw thread that matches with sheathed tube internal thread, the sleeve pipe front end is equipped with annular card limit, and the sleeve pipe cover is established at the adapter periphery and with second adapter threaded connection, and the card limit of sleeve pipe tip supports on the preceding terminal surface of first adapter.
3. The multi-point pitot tube of claim 2, wherein: still be equipped with fixing hole on the first adapter, the second adapter is equipped with the screw hole with fixing hole department of correspondence, and first adapter and second adapter pass fixing hole back spiro union screw hole and link together through locking bolt.
4. The multi-point pitot tube of claim 3, wherein: and a sealing gasket is arranged at the butt joint of the first adapter and the second adapter.
5. The multi-point pitot tube of claim 1, wherein: the device is characterized by further comprising a pitot tube protective tube, wherein the pitot tube protective tube is sleeved on the first pitot tube and the second pitot tube, one end of the pitot tube protective tube is inserted into the pitot tube embedded part and is fixedly connected with the pitot tube embedded part, and the other end of the pitot tube protective tube extends out of the pitot tube embedded part.
6. The multi-point pitot tube of claim 5, wherein: and supporting steel bars are arranged in the pitot tube protective pipe, one end of each supporting steel bar extends into the pitot tube protective pipe and is fixedly connected with the pitot tube protective pipe, and the other end of each supporting steel bar extends out of the pitot tube protective pipe and is connected with an adjacent second adapter.
7. The multi-point pitot tube of claim 6, wherein: be equipped with on the second adapter of being connected with the support reinforcement and connect the blind hole, the support reinforcement inserts in the connection blind hole.
8. The multi-point pitot tube of claim 7, wherein: the supporting blocks are arranged in the pitot tube embedded parts, and the pitot tube protecting tubes are supported on the supporting blocks.
9. The multi-point pitot tube of claim 8, wherein: and one end of the pitot tube embedded part is provided with a connecting flange and is fixedly connected with the first pitot tube and the second pitot tube through the connecting flange.
10. The multi-point pitot tube of claim 9, wherein: and the outer wall of the pitot tube embedded part is welded with the contact surface of the flue wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222678233.XU CN218240086U (en) | 2022-10-12 | 2022-10-12 | Multi-point pitot tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222678233.XU CN218240086U (en) | 2022-10-12 | 2022-10-12 | Multi-point pitot tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218240086U true CN218240086U (en) | 2023-01-06 |
Family
ID=84668315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222678233.XU Active CN218240086U (en) | 2022-10-12 | 2022-10-12 | Multi-point pitot tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218240086U (en) |
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2022
- 2022-10-12 CN CN202222678233.XU patent/CN218240086U/en active Active
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