CN201611349U - Quick assembling-disassembling pitot tube used for cold test of large-scale boilers - Google Patents
Quick assembling-disassembling pitot tube used for cold test of large-scale boilers Download PDFInfo
- Publication number
- CN201611349U CN201611349U CN2009200620901U CN200920062090U CN201611349U CN 201611349 U CN201611349 U CN 201611349U CN 2009200620901 U CN2009200620901 U CN 2009200620901U CN 200920062090 U CN200920062090 U CN 200920062090U CN 201611349 U CN201611349 U CN 201611349U
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- pitot tube
- test
- jig arm
- unloading
- loading
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Abstract
A quick assembling-disassembling pitot tube used for the cold test of large-scale boilers comprises a fixture provided with a reset torsion spring; a left clamping arm and a right clamping arm are hinged with the middle of the fixture; a supporting rod extending out transversally is fixed on one clamping arm; a clamping structure is arranged at one end of the supporting rod, so as to clamp a pitot tube; the supporting rod adopts a telescopic rod comprising an inner sleeve rod and an outer sleeve rod; an inner rod set screw is arranged on the outer sleeve rod; the clamping arms are perpendicular to and in the same plane surface with the central line of the pitot tube as well as that of a powerful clip; and rubber blocks used for increasing the friction force between the clamping mouths of the left and the right clamping arms and objects to be clamped are additionally arranged at the clamping mouths of the left and the right clamping arms. The pitot tube can be pre-mounted when the boiler is in windless condition; wind speed measurement can be conducted by a secondary differential pressure measuring device in external connection with a rubber tube lead out boiler; and an test operator conducts the measurement under safe and clean environment outside the boiler. Therefore, the utility model greatly reduces the labor intensity of the test, reduces the probability of safety accidents, and ensures that the test can be fulfilled conveniently and fast; meanwhile, the utility model can ensure that the test measurement is conducted according to national standards, and the accuracy of the test is guaranteed.
Description
Technical field
The utility model relates to a kind of large-sized boiler cold test with loading and unloading pitot tube fast.
Background technology
The fuel-burning power plant is by coming the transducing generating in boiler combust fuel (normally coal) pushing turbine group, point is coal-fired in boiler needs by a plurality of coal burners.
Large-sized boiler installs or big light maintenance finishes back or when combustion problem occurring and need analyze will be carried out the boiler cold-state test usually; Wherein, the burner nozzle measuring wind speed is an important content of cold test.Adopt the pitot tube meet national standard during measurement, be fixed on burner nozzle, draw wind input differential pressure measurement secondary instrument from burner nozzle by the cross section of setting, diverse location in the cross section and carry out measuring wind speed.
Along with boiler capacity increases, size of burner hearth increases, during the test of boiler cold-state aerodynamic field, operating personnel need carry instrument and climb into the high frame of burner hearth 30～40m, emit 30～40m/s wind speed to measure, and labour intensity is big, the dust concentration height, poor working environment, potential safety hazard is many, and the accuracy of measurement also is subjected to the working environment influence.
This series products that can measure was once arranged, but design is reasonable inadequately, and loaded down with trivial details inconvenience is installed outside stove, need installs, and do not have adjustment structure to guarantee to measure accurately with screwdriver or spanner.
The utility model content
The purpose of this utility model, just provide a kind of for convenience detach, be provided with adjustment structure and guarantee to measure accurately the large-sized boiler cold test with loading and unloading pitot tube fast.
For realizing above-mentioned utility model purpose, of the present utility model a kind of for convenience detach, be provided with adjustment structure and guarantee to measure accurately the large-sized boiler cold test with loading and unloading pitot tube fast, it is characterized in that: one hinged and have anchor clamps of reduction torsion spring from the centre by left and right sides jig arm, be fixed with a support bar that crosses out on a jig arm, rod end is provided with the clamp structure clamping pitot tube.
The expansion link that loop bar constituted inside and outside described support bar was served as reasons, outer loop bar is provided with interior bar holding screw; Also can be that the support bar of being furnished with different size is used for changing adjusting.
Described clamp structure is and adapts to the clamp that pitot tube passes, and is provided with the pitot tube holding screw.
Described jig arm and pitot tube center line, jig arm is all vertical with powerful folder center line and on same plane.
On the basis of the above, the utility model can also be done further improvement:
Described left and right sides jig arm jaw is provided with the block rubber that increases anchor clamps folder mouthful and the friction force of caught object.
During test, can be before fan starting, relatively preferably under the working environment, in advance the utility model is installed on burner nozzle, pick out outside the burner hearth with sebific duct again, only need after on-test to carry out measuring wind speed and dependence test with the differential pressure measurement secondary instrument in the working environment preferably outside stove, wherein the making of pitot tube is carried out according to national standard; Reach and improve working environment, reduce labor intensity, reduce the purpose that potential safety hazard can guarantee that simultaneously measurement accuracy ground carries out the cold test test.
Beneficial effect: the utility model is simple in structure, and processing and fabricating is easy, and overall dimensions is little, does not influence the spout flow field.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is that the master of the utility model embodiment looks synoptic diagram;
Fig. 2 is the synoptic diagram of Fig. 1 band broken section.
Among the figure: 1-anchor clamps, a 2-left side or right jig arm, 3-jointed shaft, 4-reduction torsion spring, loop bar in the 5-support bar, 6-, the outer loop bar of 7-, loop bar holding screw in the 8-, 9-pitot tube, 10-clamp, 11-pitot tube holding screw, 12-block rubber.
Embodiment
As depicted in figs. 1 and 2, of the present utility model for convenience detach, be provided with adjustment structure and guarantee to measure large-sized boiler cold test loading and unloading pitot tube fast accurately, comprise one by left and right sides jig arm 2 from the centre with jointed shaft 3 hinged, and have anchor clamps 1 of reduction torsion spring 4, on a jig arm, be fixed with a support bar that crosses out 5, rod end is provided with the clamp 10 of clamping pitot tube 9 usefulness, clamp is provided with pitot tube holding screw 11, in support bar 5 is served as reasons, outer loop bar 6,7 expansion links that constitute, outer loop bar is provided with interior bar holding screw 8, is provided with the block rubber 12 that increases anchor clamps folder mouthful and the friction force of caught object at jig arm jaw place, the left and right sides.
Guarantee during design that jig arm and pitot tube center line, jig arm are all vertical and on same plane with the powerful center line that presss from both sides.
Suppose that burner has a rectangular jet need adopt 2 * 3 grids with the uniform cross section method, measure 6 measuring points; Before on-test, can choose 6 the utility model, respectively press from both sides three, adjust chucking position with anchor clamps lower limb on burner nozzle, while adjusts support bar in advance according to the gridding method size or uses the support bar of suitable dimension instead, makes 6 measuring points meet gridding method prescribed condition in the national standard.By adjusting the position of pitot tube holding screw 11 or adjustment anchor clamps, 6 measuring points are adjusted on the same cross section of burner nozzle again, again sebific duct is connected to second test instrument outside the stove from the pitot tube rear end.After connecting, starting blower fan can test outside stove.
The rubber folder is adopted in the spring perch design, increases the friction force of anchor clamps and caught object, makes it firmly to be difficult for being blown away, and perhaps blows deflection, and installing/dismounting is quick simultaneously.Connect by support bar between pitot tube and the anchor clamps, connection procedure is guaranteed support and pitot tube center line, support is all vertical with the spring perch center line and on same plane, thereby over against the air-flow incoming flow, and guaranteed the accuracy of measuring when having guaranteed that pitot tube is measured.By changing the size of support bar, the position of anchor clamps can be implemented on the burner nozzle tangent plane arbitrfary point and measures; By a plurality of these utility models being installed, can carrying out the uniform cross section method according to national standard and measure vent wind speed at a burner nozzle.Design can change the pitot tube extension elongation by adjusting the adjustment of screw in addition, can change and measure the relative position of cross section with respect to the burner nozzle cross section.
Claims (6)
1. a large-sized boiler cold test is with loading and unloading pitot tube fast, it is characterized in that: comprise one hinged and have anchor clamps of reduction torsion spring by left and right sides jig arm from the centre, be fixed with a support bar that crosses out on a jig arm, rod end is provided with the clamp structure clamping pitot tube.
2. large-sized boiler cold test according to claim 1 is characterized in that with loading and unloading pitot tube fast: the expansion link that loop bar constituted inside and outside described support bar was served as reasons, and outer loop bar is provided with interior bar holding screw; Also can be that the support bar of being furnished with different size is used for changing adjusting.
3. large-sized boiler cold test according to claim 1 is characterized in that with loading and unloading pitot tube fast: described clamp structure is and adapts to the clamp that pitot tube passes, and is provided with the pitot tube holding screw.
According to claim 1 or 2 or 3 described large-sized boiler cold tests with loading and unloading pitot tube fast, it is characterized in that: described jig arm and pitot tube center line, jig arm are all vertical and on same plane with the powerful center line that presss from both sides.
According to claim 1 or 2 or 3 described large-sized boiler cold tests with loading and unloading pitot tube fast, it is characterized in that: described left and right sides jig arm jaw is provided with the block rubber that increases anchor clamps folder mouthful and the friction force of caught object.
6. large-sized boiler cold test according to claim 4 is characterized in that with loading and unloading pitot tube fast: described left and right sides jig arm jaw is provided with the block rubber that increases anchor clamps folder mouthful and the friction force of caught object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200620901U CN201611349U (en) | 2009-08-10 | 2009-08-10 | Quick assembling-disassembling pitot tube used for cold test of large-scale boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200620901U CN201611349U (en) | 2009-08-10 | 2009-08-10 | Quick assembling-disassembling pitot tube used for cold test of large-scale boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201611349U true CN201611349U (en) | 2010-10-20 |
Family
ID=42961983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200620901U Expired - Lifetime CN201611349U (en) | 2009-08-10 | 2009-08-10 | Quick assembling-disassembling pitot tube used for cold test of large-scale boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201611349U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941036A (en) * | 2014-05-09 | 2014-07-23 | 国家电网公司 | Nozzle wind speed measurement system and method suitable for cold state test of pulverized coal burner |
| CN109782017A (en) * | 2019-02-21 | 2019-05-21 | 山东公信安全科技有限公司 | Air flow system is surveyed in mine air duct |
| CN109939464A (en) * | 2019-03-26 | 2019-06-28 | 闽江学院 | Portable chromatographic column charging vibrator |
-
2009
- 2009-08-10 CN CN2009200620901U patent/CN201611349U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941036A (en) * | 2014-05-09 | 2014-07-23 | 国家电网公司 | Nozzle wind speed measurement system and method suitable for cold state test of pulverized coal burner |
| CN103941036B (en) * | 2014-05-09 | 2016-05-04 | 国家电网公司 | Be applicable to vent wind speed measuring system and the method for the test of coal burner cold conditions |
| CN109782017A (en) * | 2019-02-21 | 2019-05-21 | 山东公信安全科技有限公司 | Air flow system is surveyed in mine air duct |
| CN109782017B (en) * | 2019-02-21 | 2024-03-29 | 中检集团公信安全科技有限公司 | Wind speed measuring device for mine air duct |
| CN109939464A (en) * | 2019-03-26 | 2019-06-28 | 闽江学院 | Portable chromatographic column charging vibrator |
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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: 20101020 |