CN110455166B - Concentricity detection device for diffuser pipe and air jet hole of OC distributor - Google Patents
Concentricity detection device for diffuser pipe and air jet hole of OC distributor Download PDFInfo
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- CN110455166B CN110455166B CN201910847306.3A CN201910847306A CN110455166B CN 110455166 B CN110455166 B CN 110455166B CN 201910847306 A CN201910847306 A CN 201910847306A CN 110455166 B CN110455166 B CN 110455166B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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Abstract
The invention discloses a concentricity detection device of a diffuser pipe and a gas orifice of an OC distributor, which consists of a core pipe and a sleeve, wherein the core pipe is formed by splicing two symmetrical semi-circular core pipe half pipes, and the inner diameter of the spliced core pipe is +1.6mm of the outer diameter of the diffuser pipe; the core tube half-tube consists of a semicircular tube body with the upper part sleeved outside the diffusion tube and a boss with the lower part extending into the air injection hole; the outer wall of the pipe body inclines to enable the core pipe to have a taper, the taper of the inner wall of the sleeve pipe is consistent with the taper of the core pipe, and the sleeve pipe is sleeved outside the core pipe from the upper end of the core pipe. The sleeve is sleeved along the bottom of the diffuser pipe to enable the sleeve to be located at the upper part of the diffuser pipe, the two core pipe half pipes are sleeved outside the diffuser pipe in a symmetrical mode to form the core pipe, a boss at the lower part of each core pipe half pipe extends into the corresponding air injection hole, the sleeve is sleeved from the upper end of the core pipe, and if the core pipe is smoothly sleeved into the sleeve and the upper end face of the sleeve is flush with the top end of the core pipe, the concentricity of the diffuser pipe and the air injection holes meets the deviation requirement. The detection device has accurate measurement result and high efficiency.
Description
Technical Field
The invention relates to a concentricity detection device for diffuser pipes and gas orifices of an OC distributor, in particular to a concentricity detection device suitable for detecting whether the concentricity between a metal pipe fitting and a corresponding hole of the metal pipe fitting is within a deviation range, and the concentricity detection device is particularly suitable for concentricity detection with the distance between the diffuser pipes of the OC distributor and the gas orifices being 20-200 mm and suitable for concentricity detection with a large number of holes.
Background
An oxychlorination reactor is an important device of a VCM (vinyl chloride) production device, and an OC (open-nozzle closed) distributor in the oxychlorination reactor is easy to wear in the using process. The main reason of abrasion is that the concentricity deviation between the diffuser pipe and the gas injection holes is large, so that the air flow of ethylene and circulating gas from the gas injection holes can not be in complete opposite flushing fusion reaction with oxygen and hydrogen chloride from the diffuser pipe, the air flow of the gas injection holes directly drives a catalyst in the tower to flush the diffuser pipe to cause the abrasion of the diffuser pipe, and the long-term flushing causes the damage of the diffuser pipe. Therefore, a core problem in avoiding wear of the OC distributor device is to control the concentricity deviation of the diffuser pipe and the gas injection holes to be within 1.6 mm. At present, 2 methods are commonly used for detecting the concentricity deviation of the diffuser pipe and the gas injection hole. Firstly, an angle square is adopted for measurement, specifically, as shown in figure 1, a small straight edge section of the angle square 6 is tightly attached to the edge of the air injection hole 5, and the attaching condition of a long straight edge section of the angle square and the outer side of the diffuser pipe 4 is observed, so that the deviation value is measured. The method relates to artificial operation factors, has large influence on the measurement result and has poor efficiency. Secondly, as shown in fig. 2, a convex pipe fitting tool 7 is adopted, the outer diameter of the upper portion of the pipe fitting tool 7 is the same as the outer diameter of a diffuser pipe, the pipe fitting tool is accurately placed on the upper portion of an air vent to ensure that the pipe fitting tool and the air vent are coaxial, and then the concentricity deviation of the diffuser pipe and the air vent is measured.
Disclosure of Invention
The invention aims to provide a concentricity detection device for a diffuser pipe and an air vent of an OC distributor, which can efficiently measure whether the concentricity of the diffuser pipe and the air vent of the OC distributor is in a deviation range.
The purpose of the invention is realized by the following technical scheme:
a concentricity detection device for a diffuser pipe and an air vent of an OC distributor comprises a core pipe 1 and a sleeve 2, wherein the core pipe 1 is formed by splicing two symmetrical semicircular core pipe half pipes 3, the core pipe half pipes 3 comprise semicircular pipe bodies, the upper parts of the semicircular pipe bodies are sleeved outside the diffuser pipe 4, and bosses, the lower parts of the semicircular pipe bodies are extended into the air vent 5, and the inner diameter of the core pipe 1 after splicing is equal to the outer diameter phi D +1.6mm of the diffuser pipe; the outer wall of the pipe body inclines to enable the core pipe 1 to have a taper, the taper of the inner wall of the sleeve 2 is consistent with the taper of the core pipe 1, and the sleeve 2 is sleeved outside the core pipe 1 from the upper end of the core pipe 1.
Preferably, the core tube half-tube 3 is an integrally formed half-tube.
Preferably, the outer wall of the pipe body inclines to increase the wall thickness of the pipe body from top to bottom.
Preferably, the length of the pipe body is larger than the distance between the diffuser pipe and the gas injection hole.
Preferably, the boss is semi-cylindrical, the radius of the boss is equal to that of the air injection hole, the lower end of the core pipe 1 is ensured to be fixed in the air injection hole, the core pipe is prevented from moving, and therefore the measurement accuracy is improved.
Preferably, the upper end surface of the sleeve 2 is flush with the top end of the core tube 1.
The detection device is suitable for concentricity detection with the distance between the diffuser pipe and the gas orifice being 20-200 mm. And determining the height of the core pipe according to the distance between the diffuser pipe and the gas injection hole.
The maximum allowable deviation of concentricity of diffuser pipe and gas orifice in the OC distributor is 1.6 mm.
A concentricity detection method for diffuser pipes and gas injection holes of an OC distributor comprises the following steps: the sleeve 2 is sleeved along the bottom of the diffuser pipe to enable the sleeve to be located on the outer side of the upper portion of the diffuser pipe, the two core pipe half pipes 3 are symmetrically arranged to be sleeved outside the diffuser pipe to be spliced into the core pipe 1, a boss at the lower portion of each core pipe half pipe 3 extends into the corresponding air jet hole, the sleeve 2 is sleeved from the upper end of the core pipe 1, and if the core pipe 1 is smoothly sleeved into the sleeve 2 and the upper end face of the sleeve 2 is flush with the top end of the core pipe 1, the concentricity of the diffuser pipe and the air jet hole meets the.
The detection device is also suitable for detecting the concentricity deviation between the metal pipe fitting and the corresponding hole.
The invention has the beneficial effects that:
the core pipe of the detection device is formed by splicing two symmetrical core pipe half pipes, so that the diffusion pipe can conveniently penetrate into the gas injection hole from the distance between the diffusion pipe and the gas injection hole and is sleeved outside the diffusion pipe, and the problem that the diffusion pipe cannot be sleeved into the core pipe and extends into the gas injection hole by adopting a whole circular pipe is solved. The sleeve serves as the final test, and if the core tube can be smoothly inserted into the sleeve and can be assembled to be flush with the upper end of the core tube, the concentricity can be indicated to be within the required deviation range.
The detection device has the advantages of reasonable design, accurate measurement result and high efficiency, is particularly suitable for detecting the concentricity of the diffuser pipes and the air injection holes of the OC distributors with more and densely arranged OC distributors, and greatly improves the product quality.
Drawings
FIG. 1 is a schematic view of the use of an angle square to measure concentricity of diffuser tube and gas orifice of an OC sparger.
FIG. 2 is a schematic diagram of measuring concentricity of a diffuser pipe and an air vent of the OC distributor by using a pipe fitting tool.
FIG. 3 is a schematic structural diagram of a concentricity detection device of diffuser pipe and gas injection holes of an OC distributor.
Fig. 4 is a schematic view of the core tube.
FIG. 5 is a schematic view showing the structure of a core tube half.
Fig. 6 is a schematic structural view of the sleeve.
In the figure, 1-core tube, 2-sleeve, 3-core tube half tube, 4-diffuser tube, 5-air vent, 6-angle square and 7-pipe fitting tool.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples.
Example 1
The distance between a diffuser pipe of the OC distributor in the oxychlorination reactor and the gas orifice is 50 mm.
As shown in fig. 3-6, a concentricity detection device for diffuser pipe and gas orifice of OC distributor is composed of a core pipe 1 and a sleeve 2, wherein the core pipe 1 is formed by splicing two symmetrical semi-circular core pipe half-pipes 3, and the core pipe half-pipe 3 is composed of a semi-circular pipe body (with the length of 60mm) whose upper part is sleeved outside the diffuser pipe 4 and a boss whose lower part is extended into the gas orifice 5; the inner diameter of the core pipe 1 after splicing is equal to the outer diameter phi D +1.6mm of the diffuser pipe, and the outer wall of the pipe body is inclined to increase the wall thickness of the pipe body from top to bottom, so that the core pipe 1 has taper (the taper is 7 degrees); the taper of the inner wall of the sleeve 2 is consistent with that of the core tube 1, and the sleeve 2 is sleeved outside the core tube 1 from the upper end of the core tube 1.
The boss is semi-cylindrical, and the radius of the boss is equal to that of the air injection hole.
The concentricity of a diffuser pipe and an air vent of an OC distributor is detected by adopting the device of the embodiment, a sleeve 2 is sleeved along the bottom of the diffuser pipe to enable the sleeve to be positioned at the outer side of the upper part of the diffuser pipe, two core pipe half pipes 3 which are symmetrically arranged are sleeved outside the diffuser pipe to be spliced into a core pipe 1, a boss at the lower part of the core pipe half pipe 3 extends into the air vent and is sleeved into the sleeve 2 from the upper end of the core pipe 1, and if the core pipe 1 is smoothly sleeved into the sleeve 2 and the upper end surface of the sleeve 2 is flush with the top end of the core pipe 1, the concentricity of the diffuser pipe and the air vent; if the upper end surface of the sleeve 2 is higher than that of the core pipe 1, the concentricity of the diffuser pipe and the gas injection hole is beyond the deviation range.
Claims (7)
1. The concentricity detection device for the diffuser pipe and the gas orifice of the OC distributor is characterized by consisting of a core pipe (1) and a sleeve (2), wherein the core pipe (1) is formed by splicing two symmetrical semi-circular core pipe half pipes (3), the core pipe half pipes (3) consist of a semi-circular pipe body the upper part of which is sleeved outside the diffuser pipe (4) and a boss the lower part of which is extended into the gas orifice (5), and the inner diameter of the spliced core pipe (1) is equal to the outer diameter phi D +1.6mm of the diffuser pipe; the outer wall of the pipe body inclines to enable the core pipe (1) to have a taper, the taper of the inner wall of the sleeve (2) is consistent with the taper of the core pipe (1), and the sleeve (2) is sleeved outside the core pipe (1) from the upper end of the core pipe (1).
2. The OC distributor diffuser pipe and gas orifice concentricity detection apparatus according to claim 1, wherein the core pipe half pipe (3) is an integrally formed half pipe.
3. The OC distributor diffuser pipe and orifice concentricity detection apparatus of claim 1, wherein the outer wall of the pipe body is inclined such that the wall thickness of the pipe body increases from top to bottom.
4. The OC distributor diffuser pipe and orifice concentricity detection apparatus of claim 1, wherein the length of the pipe body is greater than the distance between the diffuser pipe and the orifice.
5. The OC distributor diffuser pipe and gas orifice concentricity detection device of claim 1, wherein the boss is semi-cylindrical and has a radius equal to that of the gas orifice.
6. The OC distributor diffuser pipe and gas orifice concentricity detection device according to claim 1, wherein the upper end face of the sleeve (2) is flush with the top end of the core pipe (1).
7. A method for detecting concentricity of diffuser pipe and gas injection holes of an OC distributor based on the detection device of claim 1, which is characterized by comprising the following steps: the sleeve is sleeved along the bottom of the diffuser pipe to enable the sleeve to be located on the outer side of the diffuser pipe, the two core pipe half pipes are symmetrically sleeved on the diffuser pipe to be spliced into the core pipe, the lug bosses on the lower portions of the core pipe half pipes extend into the air injection holes, the sleeve is sleeved from the upper end of the core pipe, and if the core pipe is smoothly sleeved into the sleeve and the upper end face of the sleeve is flush with the top end of the core pipe, the concentricity of the diffuser pipe and the air injection holes meets the deviation requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910847306.3A CN110455166B (en) | 2019-09-09 | 2019-09-09 | Concentricity detection device for diffuser pipe and air jet hole of OC distributor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910847306.3A CN110455166B (en) | 2019-09-09 | 2019-09-09 | Concentricity detection device for diffuser pipe and air jet hole of OC distributor |
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| CN110455166A CN110455166A (en) | 2019-11-15 |
| CN110455166B true CN110455166B (en) | 2021-07-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201715992U (en) * | 2009-09-03 | 2011-01-19 | 成都成量工具集团有限公司 | Hole inclination measurement device |
| CN102087088A (en) * | 2010-11-05 | 2011-06-08 | 浙江菲达环保科技股份有限公司 | Detection positioning device for blow pipe of bag filter |
| CN202547573U (en) * | 2012-03-02 | 2012-11-21 | 上海采埃孚变速器有限公司 | Tool for testing coaxiality of side shaft hole axis and oil sealing pressure head axis of transmission |
| CN203037195U (en) * | 2012-12-05 | 2013-07-03 | 柳州欧维姆机械股份有限公司 | Outer cone inclination steel ball measuring gauge |
| CN103234438B (en) * | 2013-04-03 | 2015-07-15 | 哈尔滨汽轮机厂有限责任公司 | Tool and method for measuring eccentricity of upper and lower pipe orifices of high-pressure main steam stop/regulating valves of steam turbines |
| CN203231730U (en) * | 2013-05-24 | 2013-10-09 | 江苏建一机床有限公司 | Tool for detecting coaxiality of installing hole and bearing hole of motor base |
| CN203286976U (en) * | 2013-06-06 | 2013-11-13 | 施密特汽车管件(安徽)有限公司 | Measuring device for coaxiality of welded oil nozzle and oil orifice in oil cylinder |
| CN106767348B (en) * | 2016-12-21 | 2024-01-23 | 上海第一机床厂有限公司 | Locking cap centering device and centering method |
| CN207456365U (en) * | 2017-09-28 | 2018-06-05 | 河南平原光电科技有限公司 | Shaped piece concentricity detecting tool |
| CN109708560A (en) * | 2019-02-13 | 2019-05-03 | 合肥江淮铸造有限责任公司 | A kind of automobile hub casting coaxiality check fixture |
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