Novel lining structure of calcium carbide furnace charging pipe nipple

Abstract

This utility model discloses a novel short-section lining structure for a calcium carbide furnace feed pipe, belonging to the field of calcium carbide furnace technology. It includes a feed pipe body, inside which a cast stone lining assembly is installed. Two flanges are symmetrically fixed to both ends of the feed pipe body, and one flange is fixed to one side of each flange. The cast stone lining of this utility model has a short prefabrication time, significantly reducing labor intensity and improving production efficiency. It also has a long service life, reducing equipment downtime for maintenance and increasing equipment uptime. Compared to castable lining short sections, it has stronger wear resistance and a longer service life, effectively solving the problem of electrical sparking between the feed column and the water-cooled jacket, improving the safe operation of the calcium carbide furnace, reducing unplanned downtime for maintenance, and lowering maintenance frequency. Furthermore, it uses a two-set cast stone lining bonding method for installation, improving installation convenience and ease of use for personnel. An injection groove is provided to ensure bonding strength and improve the stability of equipment use.

Description

Technical Field

[0001] This utility model belongs to the field of calcium carbide furnace technology, specifically relating to a novel inner lining structure for a short section of the feed tube in a calcium carbide furnace. Background Technology

[0002] The calcium carbide furnace is the core device that uses electric arc and resistance heating to react quicklime with carbonaceous raw materials to produce calcium carbide in a high-temperature environment above 2000℃. Its degree of enclosure is classified into three types: open furnace, semi-enclosed furnace, and enclosed furnace. The equipment consists of six core systems: furnace body, electrode system, feeding device, cooling system, etc., and employs an intelligent electrical control system to maintain three-phase power balance and monitor process parameters.

[0003] The existing lining of the short section of the feed pipe on the second floor of the calcium carbide furnace is made by mixing and pouring castable refractory with phosphoric acid. During use, due to high temperature, material friction and shaking, the castable refractory is prone to falling off, resulting in a short service life. After the lining falls off, the insulating short section is prone to material accumulation, which can lead to short circuits, sparking and water leakage inside the furnace, causing unplanned maintenance, affecting the operating rate of the unit and increasing the frequency of maintenance. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a novel short-section lining structure for calcium carbide furnace feed pipes, which features convenient installation and long service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel short section lining structure for a calcium carbide furnace feed pipe, comprising a feed pipe body, wherein a cast stone lining assembly is installed inside the feed pipe body, and flange plates two are symmetrically fixed to both ends of the feed pipe body, and flange plate one is fixed to one side of flange plate two.

[0006] Preferably, an insulating plate is sandwiched between the second flange and the main body of the material pipe, and the interior of the insulating plate has mounting holes corresponding to the first flange.

[0007] Preferably, the cast stone lining assembly includes a cast stone lining body one, the cast stone lining body one is inserted into the inside of the material pipe body, the cast stone lining body one has several positioning grooves opened inside, a cast stone lining body two is inserted into one side of the cast stone lining body one, and a positioning protrusion is fixedly connected to one side of the cast stone lining body two corresponding to the positioning groove.

[0008] Preferably, the positioning protrusion has symmetrically formed glue injection grooves inside.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model features a short prefabrication time for the cast stone lining, significantly reducing labor intensity and improving production efficiency. It also boasts a long service life, reducing equipment downtime for maintenance and increasing equipment uptime. Compared to castable linings, the shorter sections offer stronger wear resistance and a longer service life. It effectively solves the problem of electrical sparking between the feed column and the water-cooled jacket, improving the safe operation of the calcium carbide furnace, reducing unplanned shutdowns for maintenance, and lowering maintenance frequency. Furthermore, the installation utilizes a two-set cast stone lining bonding method, enhancing installation convenience and ease of use for personnel. An injection groove ensures bonding strength and improves equipment stability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0013] In the figure: 1. Cast stone lining assembly; 11. Cast stone lining body one; 12. Positioning groove; 13. Positioning protrusion; 14. Glue injection groove; 15. Cast stone lining body two; 2. Flange one; 3. Insulation plate; 4. Flange two; 5. Material pipe body. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2 The present invention provides the following technical solution: a novel lining structure for a short section of a feed tube in a calcium carbide furnace, comprising a feed tube body 5, a cast stone lining component 1 installed inside the feed tube body 5, flange plates 2 4 symmetrically fixed to both ends of the feed tube body 5, and flange plate 1 2 fixed to one side of flange plate 2 4.

[0016] Specifically, an insulating plate 3 is sandwiched between flange plate 2 and flange plate 3, and mounting holes are opened inside the insulating plate 3 corresponding to flange plate 2.

[0017] By adopting the above technical solution, the accuracy of the installation of the insulation board 3 is ensured, and the installation quality is improved.

[0018] Specifically, the cast stone lining assembly 1 includes a cast stone lining body 11. The cast stone lining body 11 is inserted into the inside of the material pipe body 5. The cast stone lining body 11 has several positioning grooves 12 inside. A cast stone lining body 2 15 is inserted into one side of the cast stone lining body 11. A positioning protrusion 13 is fixedly connected to one side of the cast stone lining body 2 15 corresponding to the positioning groove 12.

[0019] By adopting the above technical solution, the cast stone inner lining body 11 and the cast stone inner lining body 2 15 are inserted and spliced ​​together, and the positioning protrusion 13 is inserted into the positioning groove 12 to ensure the accuracy of the insertion. After splicing, the outer diameter is 480mm, the inner diameter is 360mm, and the height is 350mm.

[0020] Specifically, the positioning protrusion 13 has symmetrically opened glue injection grooves 14 inside.

[0021] By adopting the above technical solution, the glue injection groove 14 is filled with high-temperature resistant insulating glue, and the glue injection groove 14 is symmetrically opened to ensure a firm and stable bond.

[0022] The working principle and usage process of this utility model are as follows: When using this utility model, high-temperature resistant insulating glue is first injected into the glue injection groove 14. Then, the cast stone lining body 11 and the cast stone lining body 2 15 are inserted and spliced ​​together. The positioning protrusion 13 is inserted into the positioning groove 12 to ensure the accuracy of the insertion. After splicing, the outer diameter is 480mm, the inner diameter is 360mm, and the height is 350mm. Compared with the castable lining short section, it has strong wear resistance and a longer service life. It effectively solves the problem of electrical sparking between the feeding column and the water cooling jacket, improves the safe operation of the calcium carbide furnace, reduces unplanned shutdowns for maintenance, and reduces the frequency of maintenance.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel lining structure of a short section of a raw material pipe of an electric furnace, comprising a raw material pipe body (5), characterized in that: The inside of the main body of the material pipe (5) is equipped with a cast stone lining assembly (1), and flange plate two (4) is symmetrically fixed at both ends of the main body of the material pipe (5). Flange plate one (2) is fixed on one side of flange plate two (4).

2. A novel lining structure for a calcium carbide furnace charge pipe pup joint according to claim 1, characterized in that: An insulating plate (3) is sandwiched between the second flange (4) and the main body of the pipe (5), and the interior of the insulating plate (3) has mounting holes corresponding to the first flange (2).

3. A novel lining structure for the short section of the calcium carbide furnace charging pipe according to claim 1, characterized in that: The cast stone lining assembly (1) includes a cast stone lining body one (11), the cast stone lining body one (11) is inserted into the inside of the material pipe body (5), the cast stone lining body one (11) has several positioning grooves (12) inside, the cast stone lining body one (11) is inserted into one side of the cast stone lining body one (11), and a positioning protrusion (13) is fixedly connected to one side of the cast stone lining body two (15) corresponding to the positioning groove (12).

4. A novel calcium carbide furnace charge pipe pup joint inner lining structure according to claim 3, characterized in that: The positioning protrusion (13) has symmetrically opened glue injection grooves (14) inside.

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