Titanium tetrachloride flue gas or dust pipeline and pipeline inspection hole plugging device

Abstract

The utility model discloses a titanium tetrachloride flue gas or dust pipeline and pipeline inspection hole plugging device which comprises an extension column and a threaded plugging piece, the extension column is arranged on the outer side of an inspection hole, and the extension column is provided with a through hole which has the same diameter as the inspection hole and is concentric with the inspection hole; internal threads are arranged in the inspection hole and the through hole; the threaded plugging piece comprises a plugging part, the plugging part is provided with an external thread matched with the internal thread, and the plugging part is detachably installed in the through hole and the inspection hole through the external thread. By arranging the extension column and matching threaded connection, gas sealing of the inspection hole can be achieved, meanwhile, the structure is simple, the inspection hole can be made of carbon steel or stainless steel, the whole inspection hole is made of rigid materials, the inspection hole is not prone to reacting with materials in a pipeline, the service life is long, frequent replacement is not needed, the production cost is effectively saved, and the service life of the inspection hole is prolonged. And the plugging or opening operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium tetrachloride production, in particular to a titanium tetrachloride flue gas or dust pipeline and a pipeline inspection hole plugging device. Background Technique

[0002] Titanium tetrachloride is the main raw material for producing sponge titanium and titanium dioxide. After the crude titanium tetrachloride is refined, the refined titanium tetrachloride can be used in the titanium dioxide production process of titanium chloride white. When using the new technology of low-temperature selective chlorination process to produce titanium tetrachloride, a large amount of dust is contained. The cyclone dust collection device is used for gas-solid separation. When the production load is large, the cyclone feeding pipeline often has a blockage phenomenon. When a blockage occurs, manual cleaning is required. In addition, when the chlorination furnace discharges slag, the discharge pipeline will be blocked due to solid caking. At the same time, the high-solid-content titanium tetrachloride slurry pipeline also has scaling and blockage problems. Therefore, inspection holes need to be set on the relevant pipelines. When a blockage occurs, inspections and cleanings are carried out through these inspection holes. After the inspection or cleaning is completed, these inspection holes need to be plugged. Currently, the commonly used plugging method is to add a flange at the inspection hole and set a gate valve for plugging. This plugging method cannot achieve airtight plugging, resulting in some safety hazards.

[0003] In this technology, in order to achieve airtight sealing, the patent application with the application number 202123068716.X discloses a sealing device for inspection holes, which includes a rubber plug located in the inspection hole, a pulling and locking mechanism arranged on the rubber plug, and an anti-deformation mechanism arranged above the rubber plug; the pulling and locking mechanism includes a wedge block, a tension bolt welded above the wedge block and connected to the wedge block, and a locking nut arranged at the free end of the tension bolt and threadedly connected to the tension bolt; the anti-deformation mechanism includes a baffle located above the rubber plug and below the locking nut; the tension bolt passes through the rubber plug and the baffle from bottom to top in sequence. The whole structure is relatively complex, and the rubber plugging structure is prone to react with the materials in the pipeline, affecting the purity of the materials passing through the pipeline. At the same time, it is also prone to deformation and damage, etc., and needs to be frequently replaced, resulting in an increase in production costs.

[0004] Based on this, the prior art still needs to be improved. Summary of the Utility Model

[0005] To solve the above technical problems, an embodiment of the utility model proposes a titanium tetrachloride flue gas or dust pipeline and a pipeline inspection hole plugging device to solve the airtightness problem existing in the gate valve plugging of the prior art.

[0006] To solve the above technical problems, on the one hand, some embodiments of the present utility model disclose a pipeline inspection hole plugging device, including an extension column and a threaded plugging member. Among them, the extension column is arranged outside the inspection hole, and the extension column has a through hole with the same diameter and concentric with the inspection hole;

[0007] Internal threads are provided in the inspection hole and the through hole;

[0008] The threaded plugging member includes a plugging portion, and the plugging portion has an external thread adapted to the internal thread. The plugging portion is detachably installed in the through hole and the inspection hole through the external thread.

[0009] In some embodiments, the extension column is hermetically connected to the outside of the inspection hole.

[0010] In some embodiments, the threaded plugging member further includes an operating portion, and the operating portion is connected to one end of the plugging portion.

[0011] In some embodiments, the operating portion is a nut.

[0012] In some embodiments, a fastening assembly is further provided on the extension column. When the threaded plugging member is in a plugged state, the fastening assembly positions the threaded plugging member on the internal thread.

[0013] In some embodiments, the fastening assembly includes an L-shaped member. The first section of the L-shaped member is hinged to the side wall of the extension column. When the threaded plugging member is in a plugged state, the second section of the L-shaped member is buckled on the end of the nut away from the extension column.

[0014] In some embodiments, the length of the plugging portion is equal to the sum of the lengths of the inspection hole and the through hole.

[0015] In some embodiments, the end face of the plugging portion away from the operating portion has a surface adapted to the inner wall of the pipeline at the inspection hole.

[0016] In some embodiments, a sealing ring is further included. The sealing ring is sleeved on the plugging portion and abuts against one end of the operating portion close to the plugging portion;

[0017] In some embodiments, an internal thread protection sleeve is further included. The internal thread protection sleeve includes a rigid transition ring and a flexible transition ring. The rigid transition ring includes a transition portion and an extension portion connected in sequence in the length direction. The transition portion is located in the inspection hole and the through hole, and the extension portion extends from one end of the through hole away from the inspection hole; the outer diameter of the transition portion is smaller than the inner diameter of the through hole, and the outer diameter of the extension portion is larger than the inner diameter of the through hole; the flexible transition ring is coated on the outer wall of the transition portion, and the outer diameter of the flexible transition ring is equal to the inner diameter of the through hole.

[0018] In some embodiments, the length of the flexible transition ring is equal to the length of the through hole; the outer diameter of the flexible transition ring in the free state is equal to the sum of the inner diameter of the through hole and twice the depth of the internal thread.

[0019] On the other hand, the embodiment of the present invention also discloses a titanium tetrachloride flue gas or dust pipeline, which includes the aforementioned pipeline inspection hole plugging device; an inspection hole is provided on the flue gas or dust pipeline, and the pipeline inspection hole plugging device detachably plugs the inspection hole.

[0020] By adopting the above technical solutions, the present invention has at least the following beneficial effects:

[0021] A titanium tetrachloride flue gas or dust pipeline and a pipeline inspection hole plugging device provided by the present invention can achieve airtight sealing of the inspection hole through the arrangement of the extension column and in cooperation with threaded connection. At the same time, the structure is relatively simple, and carbon steel or stainless steel can be used as the material for production. The overall is a rigid material, which is not easy to react with the materials in the pipeline, has a long service life, does not need to be replaced frequently, effectively saves production costs, and the plugging or opening operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of an open state of a pipeline inspection hole plugging device disclosed in some embodiments of the present invention;

[0024] Figure 2 It is a schematic structural diagram of a plugged state of a pipeline inspection hole plugging device disclosed in some embodiments of the present invention;

[0025] Figure 3 It is a schematic structural diagram of an internal thread protective sleeve of a pipeline inspection hole plugging device disclosed in some embodiments of the present invention.

[0026] Reference numerals:

[0027] 100, threaded plugging member; 200, flue gas or dust pipeline;

[0028] 1. Extension column; 2. Plugging part; 3. Operating part; 4. Sealing ring; 5. Inspection hole; 6. Fastening assembly; 7. Internal thread protection sleeve; 71. Flexible transition ring; 72. Transition part; 73. Extension part. Specific embodiments

[0029] The following further describes the embodiments of the present disclosure in detail with reference to the accompanying drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0030] These embodiments are provided by the present disclosure to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be interpreted as merely exemplary, rather than as limitations.

[0031] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0032] In addition, the "first", "second" and similar terms used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and similar words mean that the elements before this word are covered by the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0033] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0034] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in, for example, a general dictionary should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0035] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0036] As Figures 1 to 3 As shown, some embodiments of the present utility model disclose a plugging device for a pipeline inspection hole 5, which can be used for a titanium tetrachloride flue gas or dust pipeline 200 and is used to plug the inspection hole 5 thereon. It includes an extension column 1 and a threaded plugging member 100. Among them, the extension column 1 is arranged outside the inspection hole 5, and the extension column 1 has a through hole with the same diameter and concentric with the inspection hole 5; internal threads are provided in the inspection hole 5 and the through hole; the threaded plugging member 100 includes a plugging portion 2, and the plugging portion 2 has an external thread adapted to the internal thread, and the plugging portion 2 is detachably installed in the through hole and the inspection hole 5 through the external thread. By setting the extension column 1 and cooperating with threaded connection in this embodiment, airtight sealing of the inspection hole 5 can be achieved. At the same time, the structure is relatively simple, and the material can be made of carbon steel or stainless steel. The whole is a rigid material, which is not easy to react with the materials in the pipeline, has a long service life, does not need to be replaced frequently, effectively saves production costs, and the plugging or opening operation is simple.

[0037] Some embodiments of the present utility model disclose a plugging device for a pipeline inspection hole 5. On the basis of the above embodiments, the extension column 1 is hermetically connected to the outside of the inspection hole 5. Generally, airtight sealing can be achieved by welding or adding gaskets, etc. In addition, for the convenience of plugging or opening, the threaded plugging member 100 further includes an operation portion 3, and the operation portion 3 is connected to one end of the plugging portion 2. The operation portion 3 can be a nut. The operator can directly manually rotate to open or close, or can also use components such as a wrench.

[0038] The plugging device for the pipeline inspection hole 5 disclosed in some embodiments of the present utility model, on the basis of the above embodiments, in order to prevent the plugging part 2 from becoming loose during the working process, thus causing production accidents, a fastening assembly 6 is further provided on the extension column 1. When the threaded plugging member 100 is in the plugging state, the fastening assembly 6 positions the threaded plugging member 100 at the internal thread. The fastening assembly 6 includes an L-shaped member. The first section of the L-shaped member is hinged to the side wall of the extension column 1. When the threaded plugging member 100 is in the plugging state, the second section of the L-shaped member is buckled on the end of the nut away from the extension column 1. Generally, the L-shaped member is arranged on the upper surface of the extension column 1. In the plugging state, one end of the L-shaped member is hinged and the other end is buckled on the end of the nut. Under its own gravity, it will not become loose, ensuring production safety.

[0039] The plugging device for the pipeline inspection hole 5 disclosed in some embodiments of the present utility model, on the basis of the above embodiments, the length of the plugging part 2 is equal to the sum of the lengths of the inspection hole 5 and the through hole. This makes the end face of the plugging part 2 sealed with the periphery of the inspection hole 5. The end face of the plugging part 2 away from the operating part 3 has a surface adapted to the inner wall of the pipeline at the inspection hole 5. This end face structure makes the pipeline still a relatively smooth passage at the inspection port in the plugging state, thus effectively preventing impurities and the like from adhering between the plugging part 2 and the through hole, making it difficult to open the plugging part 2. Generally, after a predetermined production time, the inspection hole 5 needs to be opened for inspection. During the inspection, the process of cleaning the end of the plugging part 2 and the periphery of the inspection port can be increased to avoid the phenomenon of the contact part getting stuck. In addition, in order to further enhance the sealing effect, a sealing ring 4 can be further included. The sealing ring 4 is sleeved on the plugging part 2 and abuts against one end of the operating part 3 close to the plugging part 2. To achieve the sealing at the joint of the plugging part 2 and the operating part 3.

[0040] The plugging device for the pipeline inspection hole 5 disclosed in some embodiments of the present utility model, on the basis of the above embodiments, as Figure 3As shown, in order to avoid adverse effects on the internal threads of the through hole when cleaning debris, such as impurities adhering to the internal threads and being difficult to clean, this problem can be solved by setting an internal thread protection sleeve 7, the internal thread protection sleeve 7 may include a rigid transition ring and a flexible transition ring 72, the rigid transition ring includes a transition portion 71 and an extension portion 73 connected in sequence in the length direction, the transition portion 71 is located in the inspection hole 5 and the through hole, and the extension portion 73 extends from the end of the through hole away from the inspection hole 5; the outer diameter of the transition portion 71 is smaller than the inner diameter of the through hole, and the outer diameter of the extension portion 73 is larger than the inner diameter of the through hole; the flexible transition ring 72 is coated on the outer wall of the transition portion 71, and the outer diameter of the flexible transition ring 72 is equal to the inner diameter of the through hole. Generally, the length of the flexible transition ring 72 is equal to the length of the through hole; the outer diameter of the flexible transition ring 72 in the free state is equal to the sum of the inner diameter of the through hole and twice the depth of the internal thread.

[0041] When performing cleaning and inspection work, the threaded sealing member 100 is removed from the through hole by rotating the operating part 3, and then the transition part 71 end of the internal threaded protective sleeve 7 is inserted into the through hole. Since the material of the flexible transition ring 72 has a certain elasticity, it can be easily inserted. After insertion, the flexible transition ring 72 partially falls into the groove of the internal thread, and impurities are taken out through the inside of the rigid transition ring. After cleaning, the internal threaded protective sleeve 7 is pulled outward by holding the extension part 73 to remove the internal threaded protective sleeve 7, and the threaded sealing member 100 is screwed again to seal the through hole.

[0042] Some embodiments of the utility model disclose a titanium tetrachloride fume or dust pipeline 200, including a pipeline inspection hole 5 blocking device; the fume or dust pipeline 200 is provided with an inspection hole 5, and the pipeline inspection hole 5 blocking device can detachably block the inspection hole 5. The pipeline inspection hole 5 blocking device includes an extension column 1 sealed and welded to the outer wall of the inspection port, and the extension column 1 has a through hole inside, which is the same size as the inspection hole 5 and is concentric. Generally, if the pipeline is circular, the corresponding side of the extension column 1 is also set to an arc shape that matches the outer wall of the pipeline. The through hole is aligned with the inspection hole 5 and then welded. After the welding is completed, the internal thread in the through hole should form a complete and continuous internal thread with the internal thread of the inspection hole 5. The external thread on the sealing part 2 of the threaded sealing piece 100 is screwed into the internal thread in a matching manner to control the length of the sealing part 2 so that the length of the sealing part 2 is equal to the length of the extension part 73 and the thickness of the inspection hole 5, thereby achieving complete sealing. A sealing ring 4 is sleeved on the outside of the sealing part 2. After being rotated into place, the two sides of the sealing ring 4 are respectively tightly attached to the extension column 1 and the operating part 3 to achieve complete sealing.

[0043] Thus far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0044] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any manner.

Claims

1. A pipeline inspection hole plugging device, characterized in that, It includes an extension column and a threaded plug. Among them, the extension column is arranged outside the inspection hole, and the extension column has a through hole with the same diameter and concentric with the inspection hole; Internal threads are provided in the inspection hole and the through hole; The threaded plug includes a plugging portion, the plugging portion has an external thread adapted to the internal thread, and the plugging portion is detachably installed in the through hole and the inspection hole through the external thread.

2. The pipeline inspection hole plugging device according to claim 1, characterized in that The extension column is hermetically connected to the outside of the inspection hole.

3. The pipeline inspection hole plugging device according to claim 1, characterized in that, The threaded plug further includes an operating portion, and the operating portion is connected to one end of the plugging portion.

4. The pipeline inspection hole plugging device according to claim 3, characterized in that, The operating portion is a nut.

5. The pipeline inspection hole plugging device according to claim 4, characterized in that, A fastening assembly is further provided on the extension column. When the threaded plug is in the plugged state, the fastening assembly positions the threaded plug on the internal thread.

6. The pipeline inspection hole plugging device according to claim 5, characterized in that, The fastening assembly includes an L-shaped member. The first section of the L-shaped member is hinged to the side wall of the extension column. When the threaded plug is in the plugged state, the second section of the L-shaped member is buckled on the end of the nut away from the extension column.

7. The pipeline inspection hole plugging device according to claim 3, characterized in that The length of the plugging portion is equal to the sum of the lengths of the inspection hole and the through hole; Alternatively, the end face of the plugging portion away from the operating portion has a surface adapted to the inner wall of the pipeline at the inspection hole.

8. The pipeline inspection hole plugging device according to claim 3, characterized in that It further includes a sealing ring. The sealing ring is sleeved on the plugging portion and abuts against one end of the operating portion close to the plugging portion; Alternatively, it further includes an internal thread protection sleeve. The internal thread protection sleeve includes a rigid transition ring and a flexible transition ring. The rigid transition ring includes a transition portion and an extension portion connected in sequence in the length direction. The transition portion is located in the inspection hole and the through hole, and the extension portion extends from one end of the through hole away from the inspection hole; the outer diameter of the transition portion is smaller than the inner diameter of the through hole, and the outer diameter of the extension portion is larger than the inner diameter of the through hole; the flexible transition ring is coated on the outer wall of the transition portion, and the outer diameter of the flexible transition ring is equal to the inner diameter of the through hole.

9. The pipeline inspection hole plugging device according to claim 8, characterized in that The length of the flexible transition ring is equal to the length of the through hole; the outer diameter of the flexible transition ring in the free state is equal to the sum of the inner diameter of the through hole and twice the depth of the internal thread.

10. A titanium tetrachloride flue gas or dust pipeline, characterized in that, It includes the pipeline inspection hole plugging device according to any one of claims 1-9; An inspection hole is provided on the flue gas or dust pipeline, and the pipeline inspection hole plugging device detachably plugs the inspection hole.

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