CN110455166B - A concentricity detection device for OC distributor diffuser and air injection holes - Google Patents

A concentricity detection device for OC distributor diffuser and air injection holes Download PDF

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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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pipe
diffuser
tube
core
air injection
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CN110455166A (en
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顾德杰
吴厚金
王峰
张海峰
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Nanjing Chengyi New Energy Equipment Co ltd
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Nanjing Chengyi Industrial Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B5/25Measuring 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
    • G01B5/252Measuring 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

本发明公开了一种OC分布器扩压管与喷气孔的同心度检测装置,由芯管与套管组成,芯管由两个对称的半圆形芯管半管拼合构成,拼合后芯管的内径为扩压管外径+1.6mm;芯管半管由上部用于套设在扩压管外的半圆形管体和下部用于伸入喷气孔内的凸台组成;管体外壁倾斜使芯管具有锥度,套管内壁的锥度与芯管的锥度一致,套管自芯管上端套在芯管外。先将套管沿扩压管底部套入使套管位于扩压管上部,将两个芯管半管对称放置的套设在扩压管外拼合成芯管并使芯管半管下部的凸台伸入喷气孔内,自芯管上端套入套管,如果芯管顺利套入套管内并使套管的上端面与芯管顶端齐平,则扩压管和喷气孔的同心度符合偏差要求。本发明检测装置测量结果精确,效率高。

Figure 201910847306

The invention discloses a concentricity detection device of a diffuser tube and an air injection hole of an OC distributor, which is composed of a core tube and a casing. The inner diameter is the outer diameter of the diffuser tube + 1.6mm; the half-pipe of the core tube is composed of a semi-circular tube body on the upper part that is sleeved outside the diffuser tube and a boss on the lower part that extends into the jet hole; the outer wall of the tube The inclination makes the core tube have a taper, the taper of the inner wall of the sleeve is consistent with the taper of the core tube, and the sleeve is sleeved outside the core tube from the upper end of the core tube. First, insert the sleeve along the bottom of the diffuser so that the sleeve is located at the upper part of the diffuser, and then put the two core half-pipes symmetrically placed on the outside of the diffuser to form a core tube and make the lower part of the core half-pipe protrude. If the core tube is smoothly inserted into the casing and the upper end face of the casing is flush with the top of the core tube, the concentricity between the diffuser and the air injection hole is in line with the deviation Require. The detection device of the invention has accurate measurement results and high efficiency.

Figure 201910847306

Description

Concentricity detection device for diffuser pipe and air jet hole of OC distributor
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)

1.一种OC分布器扩压管与喷气孔的同心度检测装置,其特征在于由芯管(1)与套管(2)组成,所述的芯管(1)由两个对称的半圆形芯管半管(3)拼合构成,所述的芯管半管(3)由上部用于套设在扩压管(4)外的半圆形管体和下部用于伸入喷气孔(5)内的凸台组成,拼合后芯管(1)的内径为扩压管外径ΦD+1.6mm;所述的管体外壁倾斜使芯管(1)具有锥度,所述的套管(2)内壁的锥度与芯管(1)的锥度一致,套管(2)自芯管1上端套设在芯管(1)外。1. a concentricity detection device of an OC distributor diffuser and an air injection hole, is characterized in that being made up of a core pipe (1) and a casing (2), and the core pipe (1) is composed of two symmetrical half-pipes. The circular core tube half-pipe (3) is assembled and formed, and the core tube half-pipe (3) is composed of a semi-circular tube body which is used to be sleeved on the outside of the diffuser tube (4) at the upper part, and is used to extend into the air injection hole at the lower part. (5) is composed of bosses, the inner diameter of the core tube (1) after splicing is the outer diameter of the diffuser tube ΦD+1.6mm; the outer wall of the tube is inclined so that the core tube (1) has a taper, and the sleeve (2) The taper of the inner wall 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.根据权利要求1所述的OC分布器扩压管与喷气孔的同心度检测装置,其特征在于所述的芯管半管(3)为一体成型的半管。2. The device for detecting the concentricity between the OC distributor diffuser tube and the air injection hole according to claim 1, characterized in that the core tube half-pipe (3) is an integrally formed half-pipe. 3.根据权利要求1所述的OC分布器扩压管与喷气孔的同心度检测装置,其特征在于所述的管体的外壁倾斜使管体壁厚从上往下增大。3 . The concentricity detection device of the OC distributor diffuser tube and the air injection hole according to claim 1 , wherein the outer wall of the tube body is inclined so that the wall thickness of the tube body increases from top to bottom. 4 . 4.根据权利要求1所述的OC分布器扩压管与喷气孔的同心度检测装置,其特征在于所述的管体的长度大于扩压管与喷气孔的间距。4 . The concentricity detection device between the diffuser pipe of an OC distributor and the air injection holes according to claim 1 , wherein the length of the pipe body is greater than the distance between the diffuser pipe and the air injection holes. 5 . 5.根据权利要求1所述的OC分布器扩压管与喷气孔的同心度检测装置,其特征在于所述的凸台呈半圆柱形,凸台的半径等于喷气孔的半径。5 . The concentricity detection device of the OC distributor diffuser and the air injection hole according to claim 1 , wherein the boss is in a semi-cylindrical shape, and the radius of the boss is equal to the radius of the air injection hole. 6 . 6.根据权利要求1所述的OC分布器扩压管与喷气孔的同心度检测装置,其特征在于所述的套管(2)的上端面与芯管(1)顶端齐平。6. The device for detecting concentricity between the diffuser pipe of an OC distributor and the air injection holes according to claim 1, wherein the upper end surface of the sleeve (2) is flush with the top end of the core pipe (1). 7.一种基于权利要求1所述的检测装置检测OC分布器扩压管与喷气孔的同心度的方法,其特征在于包括:将套管沿扩压管底部套入使套管位于扩压管外侧,将两个芯管半管对称的套设在扩压管外拼合成芯管,并使芯管半管下部的凸台伸入喷气孔内,自芯管上端套入套管,如果芯管顺利套入套管内并使套管的上端面与芯管顶端齐平,则扩压管和喷气孔的同心度符合偏差要求。7. A method for detecting the concentricity of an OC distributor diffuser pipe and an air injection hole based on the detection device according to claim 1, wherein the method comprises: inserting the sleeve along the bottom of the diffuser so that the sleeve is located in the diffuser. On the outside of the tube, two core tube half tubes are symmetrically sleeved on the outside of the diffuser tube to form a core tube, and the boss at the lower part of the core tube half tube extends into the air injection hole, and the sleeve is sleeved from the upper end of the core tube. If the core tube is smoothly inserted into the casing and the upper end face of the casing is flush with the top of the core tube, the concentricity of the diffuser tube and the air injection hole meets the deviation requirements.
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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
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Denomination of invention: A concentricity detection device for OC distributor expansion tube and jet hole

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