Spherical surface tester and detection method

Abstract

The present invention provides a spherical surface tester and a detection method, including a convex spherical surface tester, wherein the convex spherical surface tester includes a plurality of convex arc-shaped rulers and a plurality of connecting plates, each of the convex arc-shaped rulers being connected to one end of a connecting plate, and the other ends of all the connecting plates being connected to each other; the arc edges of all the convex arc-shaped rulers form a spherical wireframe in three-dimensional space, the radius of which is completely consistent with the sphere being tested. The convex spherical surface tester is used to detect the sealing spherical surface of the small sleeve, and the concave spherical surface tester is used to detect the sealing spherical surface of the tuyere direct blowing pipe, thereby detecting the degree of fit between the sealing spherical surfaces of the small sleeve and the tuyere direct blowing pipe to ensure that the sealing spherical surfaces of the small sleeve and the tuyere direct blowing pipe are effectively matched. This prevents air leakage from the sealing spherical surfaces of the tuyere direct blowing pipe and the small sleeve, reduces the air leakage rate and air stop rate of the blast furnace, and reduces resource waste in steel and metallurgical enterprises. The spherical surface tester is simple to operate and highly objective.

Description

Technical Field

[0001] The present invention relates to the field of blast furnace ironmaking equipment manufacturing, and in particular to a spherical surface tester and a detection method. Background Art

[0002] Companies engaged in blast furnace ironmaking rely on stainless steel tuyere pipes and copper sleeves. These two components are located adjacent to each other in the blast furnace's air supply system. Their internal passages flow high-temperature air exceeding 1,000 degrees Celsius. Due to the limitations of the installation environment, sealing components cannot be used. Instead, the contacting sealing surfaces are designed as closely aligned spherical surfaces. This maximizes contact area without direct contact, ensuring excellent airtightness and airtightness, without the need for sealing components.

[0003] If the sealing spherical surface of the tuyere direct blowing pipe and the sealing spherical surface of the small sleeve do not fit each other tightly, air leakage will occur between the tuyere direct blowing pipe and the sealing spherical surface of the small sleeve. To deal with the leakage, the blast furnace must be shut down, which will cause economic losses. Even if the leakage is very small and production can be maintained, the leakage of high-temperature compressed air caused by the leakage will also increase production costs.

[0004] Because the air outlet pipe and the sleeve are manufactured separately due to different materials, it is difficult to identify which equipment's sealing surface is causing the air leak. The quality inspection of the equipment's sealing surface can only be performed using a custom-made, standard curved ruler. Standard curved rulers are designed for inspecting two-dimensional surfaces, and inspecting three-dimensional spheres requires very high operator skill. Using a standard curved ruler to inspect a three-dimensional sphere requires converting the 3D surface into a two-dimensional plane to ensure effective inspection. Therefore, the ruler surface must coincide with the radius of the sphere being measured. To convert the sphere into a circle for inspection, the curved ruler surface must lie on and completely coincide with the radius of the sphere being measured. However, the radius of the sphere being measured cannot be visually detected, requiring human perception to determine the required measurement. This method places very high demands on the operator's skill and significantly impacts the inspection results.

[0005] The current method of using ordinary arc-shaped rulers to inspect the tuyere straight-blowing pipe and the small sleeve sealing sphere has the following main disadvantages:

[0006] 1. The plane of the arc ruler must be on the radius line of the sphere to be measured and completely coincide with it;

[0007] 2. The radius line of the sphere being measured cannot be visually displayed as a basis for measurement;

[0008] 3. The above requirements must be achieved by relying on human visual senses without any other auxiliary measures.

[0009] In view of the above reasons, a spherical surface tester and a detection method are needed to conveniently test the sealing spherical surface of the tuyere direct blowing pipe and the small sleeve. Summary of the Invention

[0010] The present invention aims to provide a spherical surface inspection device and inspection method for inspecting the sealing spherical surfaces of the tuyere blowpipe and the small sleeve, respectively, to ensure that the sealing spherical surfaces of the tuyere blowpipe and the small sleeve are effectively aligned. This prevents air leakage from the sealing spherical surfaces of the tuyere blowpipe and the small sleeve, reduces the air leakage rate and air outage rate of the blast furnace, and reduces resource waste in iron and steel metallurgical enterprises.

[0011] In order to achieve the above object, the present invention provides the following technical solutions:

[0012] A spherical surface tester includes a convex spherical surface tester, which includes several convex arc-shaped rulers and several connecting plates. Each of the convex arc-shaped rulers is connected to one end of the connecting plate, and the other ends of all the connecting plates are connected to each other; the arc edges of all the convex arc-shaped rulers form a spherical wireframe in three-dimensional space with a radius completely consistent with the sphere being tested.

[0013] Furthermore, the above-mentioned spherical surface tester also includes a concave spherical surface tester, which includes a plurality of concave arc-shaped rulers and a plurality of connecting rods, each of the concave arc-shaped rulers is connected to one end of the connecting rod, and the other ends of all the connecting rods are connected to each other; the arc edges of all the concave arc-shaped rulers form a spherical wireframe in three-dimensional space whose radius is completely consistent with the sphere to be tested.

[0014] Furthermore, in the above-mentioned spherical tester, the arc-shaped edge of the convex arc-shaped ruler is a minor arc, one end of the arc-shaped edge of each convex arc-shaped ruler is connected to one end of a connecting plate, and the other ends of the arc-shaped edges of all the convex arc-shaped rulers extend in the same direction; preferably, it also includes a first rotating shaft, and each of the convex arc-shaped rulers is connected to the first rotating shaft through a connecting plate.

[0015] Furthermore, in the above-mentioned spherical tester, the arc-shaped side of the concave arc-shaped ruler is a minor arc, one end of the arc-shaped side of each concave arc-shaped ruler is connected to one end of the connecting rod, and the other ends of the arc-shaped sides of all the concave arc-shaped rulers extend in the same direction; preferably, it also includes a second rotation axis, and each of the concave arc-shaped rulers is connected to the second rotation axis through one of the connecting rods.

[0016] Furthermore, in the above-mentioned spherical surface tester, four convex arc-shaped rulers are provided, and the angle between two adjacent convex arc-shaped rulers is 90°.

[0017] Furthermore, in the above-mentioned spherical surface tester, four concave arc-shaped rulers are provided, and the angle between two adjacent concave arc-shaped rulers is 90°.

[0018] Furthermore, in the above-mentioned spherical surface tester, two adjacent connecting plates are further connected via a supporting plate.

[0019] Furthermore, in the above-mentioned spherical surface tester, two adjacent connecting rods are further connected by a supporting rod.

[0020] Furthermore, in the above-mentioned spherical surface tester, the arc length of the arc side of the convex arc ruler is 32 cm to 42 cm, and the arc length of the arc side of the concave arc ruler is 25 cm to 35 cm.

[0021] On the other hand, a method for testing using the above-mentioned spherical surface tester is provided. Before use, the convex spherical surface tester and the concave spherical surface tester are subjected to a contact fit test. If the convex arc ruler and the concave arc ruler are in close contact, it is confirmed that the spherical surface tester is intact and meets the test conditions.

[0022] Use a convex spherical surface tester to test the sealing spherical surface of the small sleeve: place the convex spherical surface tester against the sealing spherical surface of the small sleeve to be tested, and then observe whether the four arc-shaped edges of the convex spherical surface tester are in complete contact and fit with the sealing spherical surface of the small sleeve. If they are in complete contact and fit, they are qualified. Then randomly rotate the convex spherical surface tester to change the measurement points. If all random measurement points are qualified, the quality of the small sleeve is qualified. If any arc-shaped edge of the concave spherical surface tester is out of contact with the sealing spherical surface of the small sleeve, the quality of the small sleeve is unqualified.

[0023] Use a concave spherical surface tester to test the sealing spherical surface of the tuyere direct blowing pipe: place the concave spherical surface tester against the sealing spherical surface of the tuyere direct blowing pipe to be tested, and then observe whether the four arc-shaped edges of the concave spherical surface tester are in complete contact and fit with the sealing spherical surface of the tuyere direct blowing pipe. If they are in complete contact and fit, they are qualified. Then randomly rotate the concave spherical surface tester to change the measuring points. If all random measuring points are qualified, the tuyere direct blowing pipe is qualified. If any arc-shaped edge of the concave spherical surface tester is out of contact with the sealing spherical surface of the tuyere direct blowing pipe, the quality of the tuyere direct blowing pipe is unqualified.

[0024] Analysis shows that the present invention discloses a spherical surface tester and a detection method, which uses a convex spherical surface tester to detect the sealing spherical surface of a small sleeve, and uses a concave spherical surface tester to detect the sealing spherical surface of a tuyere direct blowing pipe, thereby detecting the degree of fit between the sealing spherical surfaces of the small sleeve and the tuyere direct blowing pipe to ensure that the sealing spherical surfaces of the small sleeve and the tuyere direct blowing pipe effectively fit together. This can avoid air leakage from the sealing spherical surfaces of the tuyere direct blowing pipe and the small sleeve, reduce the air leakage rate and the air stop rate of the blast furnace, and reduce the waste of resources in iron and steel metallurgical enterprises. The spherical surface tester is simple to operate, does not require special technical training and exercise, has strong objectivity, and can be used as a method for quality acceptance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings and the accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. Among them:

[0026] Figure 1 FIG. 1 is a schematic diagram of a three-dimensional structure of an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of using a concave spherical surface tester to detect the sealing spherical surface of a tuyere direct blowing pipe according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of a three-dimensional structure of inspecting the sealing spherical surface of a small sleeve using a convex spherical surface inspector according to an embodiment of the present invention.

[0029] Explanation of the accompanying reference numerals: 1 small set; 2 air outlet straight blowing pipe; 3 convex spherical surface tester; 4 concave spherical surface tester; 5 convex arc-shaped straightedge; 6 connecting plate; 7 concave arc-shaped straightedge; 8 connecting rod; 9 support plate; 10 support rod. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. Each example is provided by way of explanation of the present invention and is not intended to limit the present invention. Indeed, it will be apparent to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompasses such modifications and variations as come within the scope of the appended claims and their equivalents.

[0031] In the description of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected", "connected", and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] One or more examples of the present invention are shown in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and the description have been used to refer to like or similar parts of the present invention. As used herein, the terms "first," "second," and "third," etc. are used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of an individual component.

[0033] like Figures 1 to 3 As shown, according to an embodiment of the present invention, a spherical surface tester is provided, such as Figure 1 As shown, it includes a convex spherical surface tester 3, which includes a plurality of convex arc-shaped rulers 5 and a plurality of connecting plates 6. Each convex arc-shaped ruler 5 is connected to one end of a connecting plate 6, and the other ends of all connecting plates 6 are connected to each other; the arc edges of all convex arc-shaped rulers 5 form a spherical wireframe in three-dimensional space with a radius completely consistent with the spherical surface to be tested (the sealing spherical surface of the small sleeve 1), as shown in FIG. Figure 3 As shown, the convex spherical surface tester 3 is used to detect the fit of the sealing spherical surface of the small sleeve 1. The radius of the spherical wire frame composed of all convex arc-shaped rulers 5 of the convex spherical surface tester 3 is consistent with the radius of the sealing spherical surface of the small sleeve 1 to be tested, and all the arc edges of the convex spherical surface tester 3 are on the same specified standard sphere in three-dimensional space.

[0034] Furthermore, the spherical surface tester also includes a concave spherical surface tester 4, which includes a plurality of concave arc-shaped rulers 7 and a plurality of connecting rods 8. Each concave arc-shaped ruler 7 is connected to one end of a connecting rod 8, and the other ends of all connecting rods 8 are connected to each other; the arc edges of all concave arc-shaped rulers 7 form a spherical wireframe in three-dimensional space with a radius completely consistent with the spherical surface to be tested (the sealing spherical surface of the tuyere straight blowing pipe 2), as shown in FIG. Figure 2As shown, the concave spherical surface tester 4 is used to detect the sealing spherical surface of the air outlet direct blowing pipe 2. The radius of the spherical wire frame composed of all concave arc-shaped rulers 7 of the concave spherical surface tester 4 is consistent with the radius of the sealing spherical surface of the small sleeve 1 to be tested, and all the arc edges of the concave spherical surface tester 4 are on the same specified standard sphere in three-dimensional space.

[0035] Furthermore, if Figure 1 As shown, the arc side of the convex arc ruler 5 is a minor arc, and one end of the arc side of each convex arc ruler 5 is connected to one end of a connecting plate 6, and the other ends of the arc sides of all convex arc rulers 5 extend in the same direction. Since the radius of the spherical wire frame composed of the convex arc rulers 5 is consistent with the radius of the sealing spherical surface of the small sleeve 1, when the sealing spherical surface of the small sleeve 1 is inspected, as long as the convex spherical surface tester 3 is placed on the sealing spherical surface of the small sleeve 1 to be inspected, it can be ensured that the spherical radius line of the convex arc ruler 5 and the sealing spherical surface of the small sleeve 1 are completely coincident, and no other auxiliary measures are required, and the operation is simple. Preferably, it also includes a first rotating shaft, and each convex arc ruler 5 is connected to the first rotating shaft through a connecting plate 6. By rotating the first rotating shaft, the convex spherical surface tester 3 can be rotated to change the measuring point.

[0036] 8. Concave arc is by ruler 7, and the arc edge of concave arc is by ruler 7.Con ...

[0037] Furthermore, four convex arc-shaped straightedges 5 are provided, and the angle between two adjacent convex arc-shaped straightedges 5 is 90°. Such a setting can reduce costs.

[0038] Furthermore, four concave arc-shaped straightedges 7 are provided, and the angle between two adjacent concave arc-shaped straightedges 7 is 90°. Such a setting can reduce costs.

[0039] Furthermore, two adjacent connecting plates 6 are connected by a support plate 9. In order to ensure that the convex arc-shaped ruler 5 of the convex spherical surface tester 3 does not swing arbitrarily and cause deformation, and to maintain its rigid structure, a support plate 9 is provided between two adjacent connecting plates 6 to increase the structural strength of the convex spherical surface tester 3.

[0040] Furthermore, two adjacent connecting rods 8 are connected by a support rod 10. In order to ensure that the concave arc-shaped ruler 7 of the concave spherical surface tester 4 does not swing arbitrarily and cause deformation and maintain its rigid structure, a support rod 10 is set between the two adjacent connecting rods 8 to increase the structural strength of the concave spherical surface tester 4.

[0041] Further, the arc length of the arc side of the convex arc ruler 5 is 32cm~42cm (such as: 32cm, 33cm, 34cm, 35cm, 36cm, 37cm, 38cm, 39cm, 40cm, 41cm, 42cm), and the arc length of the arc side of the concave arc ruler 7 is 25cm~35cm (such as: 25cm, 26cm, 27cm, 28cm, 29cm, 30cm, 31cm, 32cm, 33cm, 34cm, 35cm). Because the sealing spherical surface of the tuyere small sleeve 1 has ancillary devices such as water pipes around it, the arc length limit value of the arc side of the convex arc ruler 5 is slightly larger, which is convenient for detecting whether these ancillary devices will hinder the contact surface of the tuyere straight blowing pipe 2 and the small sleeve 1 from being consistent. The arc length limit value of the arc side of the concave arc ruler 7 is the conventional working contact surface arc length range of the tuyere straight blowing pipe 2.

[0042] The manufacturing quality of other spherical devices can be inspected by customizing a spherical tester with the same radius as the sphere being inspected.

[0043] The invention also discloses a method for detecting by using the spherical surface detector.

[0044] Before use, the convex spherical tester 3 and the concave spherical tester 4 in the spherical tester are subjected to a contact and fit test to ensure that the convex spherical tester 3 and the concave spherical tester 4 can completely fit together. If the convex arc ruler 5 of the convex spherical tester 3 and the concave arc ruler 7 of the concave spherical tester 4 are in close contact, it proves that the spherical tester is intact and meets the inspection conditions.

[0045] Use the convex spherical surface tester 3 to inspect the sealing spherical surface of the small sleeve 1: place the convex spherical surface tester 3 on the sealing spherical surface of the small sleeve 1 to be tested, and then observe whether the four arc-shaped edges of the convex spherical surface tester 3 are in complete contact and fit with the sealing spherical surface of the small sleeve 1. If they are in complete contact and fit, they are qualified. Then randomly rotate the convex spherical surface tester 3 to change the measuring points. If all random measuring points are qualified, the quality of the small sleeve 1 is qualified. If any arc-shaped edge of the convex spherical surface tester 3 is out of contact with the sealing spherical surface of the small sleeve 1, the quality of the small sleeve 1 is unqualified.

[0046] Use the concave spherical surface tester 4 to test the sealing spherical surface of the tuyere direct blowing pipe 2: place the concave spherical surface tester 4 on the sealing spherical surface of the tuyere direct blowing pipe 2 to be tested, and then observe whether the four arc-shaped edges of the concave spherical surface tester 4 are in complete contact and fit with the sealing spherical surface of the tuyere direct blowing pipe 2. If they are in complete contact and fit, they are qualified. Then randomly rotate the concave spherical surface tester 4 to change the measuring point. If all random measuring points are qualified, the quality of the tuyere direct blowing pipe 2 is qualified. If any arc-shaped edge of the concave spherical surface tester 4 is out of contact with the sealing spherical surface of the tuyere direct blowing pipe 2, the quality of the tuyere direct blowing pipe 2 is unqualified.

[0047] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0048] A spherical surface tester and detection method are disclosed. A convex spherical surface tester 3 is used to test the sealing spherical surface of a small sleeve 1, and a concave spherical surface tester 4 is used to test the sealing spherical surface of a tuyere direct blowing pipe 2. The spherical surface tester and detection method are used to detect the degree of fit between the sealing spherical surfaces of the small sleeve 1 and the tuyere direct blowing pipe 2, thereby ensuring that the sealing spherical surfaces of the small sleeve 1 and the tuyere direct blowing pipe 2 are consistent. This prevents air leakage from occurring during use of the blast furnace tuyere direct blowing pipe 2 and the small sleeve 1 after installation, reduces the blast furnace air leakage rate and air outage rate, and reduces resource waste in iron and steel metallurgical enterprises. The spherical surface tester is simple to operate, does not require specialized technical training, is highly objective, and can be used as a quality inspection method.

[0049] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for testing using a spherical surface tester, characterized in that: Before use, conduct a contact fit test on the convex spherical surface tester and the concave spherical surface tester. If the convex arc ruler and the concave arc ruler are in close contact, it proves that the spherical surface tester is intact and meets the test conditions. Use a convex spherical surface tester to test the sealing spherical surface of the small sleeve: place the convex spherical surface tester against the sealing spherical surface of the small sleeve to be tested, and then observe whether the four arc-shaped edges of the convex spherical surface tester are in complete contact and fit with the sealing spherical surface of the small sleeve. If they are in complete contact and fit, they are qualified. Then randomly rotate the convex spherical surface tester to change the measurement points. If all random measurement points are qualified, the quality of the small sleeve is qualified. If any arc-shaped edge of the concave spherical surface tester is out of contact with the sealing spherical surface of the small sleeve, the quality of the small sleeve is unqualified. Use the concave spherical surface tester to test the sealing spherical surface of the tuyere direct blowing pipe: place the concave spherical surface tester against the sealing spherical surface of the tuyere direct blowing pipe to be tested, and then observe whether the four arc-shaped edges of the concave spherical surface tester are in complete contact and fit with the sealing spherical surface of the tuyere direct blowing pipe. If they are in complete contact and fit, they are qualified. Then randomly rotate the concave spherical surface tester to change the measuring points. If all the random measuring points are qualified, the tuyere direct blowing pipe is qualified. If any arc-shaped edge of the concave spherical surface tester is out of contact with the sealing spherical surface of the tuyere direct blowing pipe, the quality of the tuyere direct blowing pipe is unqualified. The spherical surface tester includes a convex spherical surface tester, which includes a plurality of convex arc-shaped rulers and a plurality of connecting plates. Each of the convex arc-shaped rulers is connected to one end of the connecting plate, and the other ends of all the connecting plates are connected to each other. The arc edges of all the convex arc-shaped rulers form a spherical wireframe with a radius completely consistent with the sphere being tested in three-dimensional space. The invention also includes a concave spherical surface tester, which includes a plurality of concave arc-shaped rulers and a plurality of connecting rods, wherein each of the concave arc-shaped rulers is connected to one end of the connecting rod, and the other ends of all the connecting rods are connected to each other; the arc edges of all the concave arc-shaped rulers form a spherical wireframe with a radius completely consistent with the sphere being tested in three-dimensional space, The arcuate side of the convex arc-shaped ruler is a minor arc, one end of the arcuate side of each convex arc-shaped ruler is connected to one end of the connecting plate, and the other ends of the arcuate sides of all the convex arc-shaped rulers extend in the same direction; The arcuate side of the concave arc ruler is a minor arc, one end of the arcuate side of each concave arc ruler is connected to one end of the connecting rod, and the other ends of the arcuate sides of all the concave arc rulers extend in the same direction.

2. The method for detecting using a spherical surface tester according to claim 1, wherein: The spherical surface tester further comprises a first rotating shaft, and each of the convex arc-shaped rulers is connected to the first rotating shaft via one of the connecting plates.

3. The method for detecting using a spherical surface tester according to claim 1, wherein: The spherical surface tester further comprises a second rotating shaft, and each of the concave arc-shaped rulers is connected to the second rotating shaft via one of the connecting rods.

4. The method for detecting using a spherical surface tester according to claim 1, wherein: Four convex arc-shaped rulers are provided, and the angle between two adjacent convex arc-shaped rulers is 90°.

5. The method for detecting using a spherical surface tester according to claim 1, wherein: There are four concave arc-shaped rulers, and the angle between two adjacent concave arc-shaped rulers is 90°.

6. The method for detecting using a spherical surface tester according to claim 1, wherein: Two adjacent connecting plates are further connected via a supporting plate.

7. The method for testing using a spherical surface tester according to claim 1, wherein: Two adjacent connecting rods are further connected via a supporting rod.

8. The method for testing using a spherical surface tester according to claim 2, wherein: The arc length of the arc side of the convex arc ruler is 32cm to 42cm, and the arc length of the arc side of the concave arc ruler is 25cm to 35cm.

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