Spiral anchoring construction device and method for lining of thermal equipment

Abstract

The invention discloses a spiral anchoring construction device and method for a lining of thermal equipment, and relates to the technical field of furnace lining construction, the construction device comprises a spiral anchoring nail, and a lifting assembly is arranged in the spiral anchoring nail in the axial direction in a penetrating mode; the lifting assembly comprises a lifting rod, and the middle of the lifting rod abuts against the inner surface of the spiral anchoring nail. The two ends of the lifting rod are hinged to the lifting unit. The construction method comprises the following steps: S1, derusting; s2, paying off; s3, spiral anchoring nails enter the field; s4, welding is conducted; s5, detecting and maintaining; s6, the spiral anchoring nails continue to conduct construction; s7, sampling inspection; s8, protecting a finished product; and S9, lining layer construction. According to the spiral anchoring construction device and method for the lining of the thermal equipment, an integral anchoring nail can be conveniently transferred and mounted, and the spiral anchoring construction device and method can adapt to the shape of the inner side wall of the thermal equipment in the construction process.

Description

Technical Field

[0001] The present invention relates to the technical field of furnace lining construction, and particularly to a spiral anchoring construction device and construction method for the lining of thermal equipment. Background Art

[0002] There are various specifications for the requirements of the temperature of the predetermined insulation layer thickness, which are widely used in industries such as petrochemical, iron and steel, non-ferrous metal smelting, etc. It has good properties such as anti-aging, resistance to sudden temperature changes, cold and heat resistance, pressure resistance, good tensile properties, not easy to deform after fixation, moisture-proof, shock absorption, etc.

[0003] During the construction of the refractory lining of conventional thermal equipment, the anchor bolts are welded to the equipment wall by arc welding. Before welding, the arrangement positions of the anchor studs that meet the requirements of the design documents and specifications need to be drawn on the welding site, and the anchor studs at the special-shaped parts such as the equipment transition section and the head are appropriately densified. Usually, when the lining thickness is relatively thin, V-shaped anchor studs or Y-shaped anchor studs are selected for welding on the equipment wall, and then the lining material is applied or poured;

[0004] Single anchor studs are easy to fall off from the inner wall of the thermal equipment. Further, voids will be generated between the lining layer and the inner wall of the thermal equipment. Moreover, the existing construction equipment is not easy to make the contact points of the spiral anchor studs with the inner wall of the thermal equipment all located on the pre-laid construction line, and it is not easy to ensure the construction operation of the spiral anchor studs.

[0005] How to develop a spiral anchoring construction device and construction method for the lining of thermal equipment, which can facilitate the transfer and installation of the formed integral anchor studs and can adapt to the construction of the inner wall of the thermal equipment, has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a spiral anchoring construction device and construction method for the lining of thermal equipment to solve the problems listed in the background art.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A spiral anchoring construction device for the lining of a thermal equipment of the present invention includes spiral anchor studs, and a lifting assembly is axially penetrated through the inside of the spiral anchor studs;

[0009] The lifting assembly includes a lifting rod, and the middle part of the lifting rod abuts against the inner surface of the spiral anchor stud;

[0010] Both ends of the lifting rod are hinged to the lifting unit.

[0011] Preferably, the lifting unit includes a sleeve, and the lower end of the sleeve is hinged to the end of the lifting rod through a pin;

[0012] The interior of the sleeve is threadedly connected to the screw, and one end of the screw is fixedly connected to the limiting rod.

[0013] Preferably, the outer diameter of the screw anchor is smaller than the layer thickness of the lining layer.

[0014] A construction method for a screw anchor construction device for the lining of a thermal equipment includes the following steps:

[0015] S1. Rust removal: Rust removal operations are carried out on the inner wall of the thermal equipment and the outer side wall of the screw anchor by hand or sandblasting respectively.

[0016] S2. Layout: Construction workers carry out layout operations on the inner wall of the thermal equipment according to the design drawings.

[0017] S3. Screw anchor arrival: Construction workers separate the sleeve from the screw, and after passing the sleeve and the lifting rod through the inside of the screw anchor, the construction workers connect the sleeve and the screw. The construction workers place the screw anchor on the laid construction line through the limiting rod, so that the center lines of the two end limiting rods coincide with the drawn line.

[0018] S4. Welding: First, the two ends of the screw anchor are preliminarily welded and fixed to the inner wall of the thermal equipment, and then supplementary welding is carried out at other contact points between the screw anchor and the inner wall of the thermal equipment.

[0019] S5. Inspection and maintenance: Lift the lifting rod through the limiting rod. The lifting rod abuts against one end of the screw anchor away from the welding point. Lift the lifting rod with a certain force, and transmit the force to the screw anchor through the lifting rod to determine the welding quality of the welding points of the screw anchor, and deal with cracks, slag inclusions, weld beads, burn-throughs, arc pits and needle-shaped gas holes.

[0020] S6. Continuous construction of the screw anchor: Disconnect the support frame from the screw anchor, and repeat the steps of S3 - S5 for the construction of the screw anchor.

[0021] S7. Sampling inspection: Use a hammer to strike the screw anchor. If the screw anchor does not separate from the inner side wall of the thermal equipment and emits a predetermined metallic sound, it is qualified. The unqualified positions are repaired by welding.

[0022] S8. Finished product protection: Set warning strips outside the screw anchor to prevent trampling.

[0023] S9. Lining layer construction: Fill the lining refractory material between the inner side wall of the thermal equipment and the screw anchor, and level and compact the lining refractory material. The height of the lining layer is higher than the height of the screw anchor.

[0024] Compared with the prior art, the beneficial technical effects of the present invention:

[0025] The present invention relates to a spiral anchoring construction device and construction method for the lining of a thermal equipment. The spiral anchoring nails are formed into a whole, and the contact points between the spiral anchoring nails and the inner wall of the thermal equipment are fixed by welding. Even if a certain contact point is separated from the inner wall of the thermal equipment, it will not affect the overall connection effect between the spiral anchoring nails and the inner wall of the thermal equipment, ensuring the stability of the connection between the spiral anchoring nails and the inner wall of the thermal equipment.

[0026] On the one hand, the lifting component facilitates the construction workers to transfer the spiral anchoring nails. On the other hand, it facilitates the construction workers to perform alignment operations during the welding process of the spiral anchoring nails and the wall of the thermal equipment, preventing the spiral anchoring nails from deviating from the pre-set sample line during the installation process, and being able to limit the position to prevent the spiral anchoring nails from detaching from the pre-set construction line during the welding process, ensuring the welding efficiency and welding effect of the spiral anchoring nails, and also facilitating the construction operation of the spiral anchoring nails at the top of the inner wall of the thermal equipment. Brief Description of the Drawings

[0027] The present invention will be further described below with reference to the drawings.

[0028] Figure 1 Schematic three-dimensional view of a spiral anchoring construction device for the lining of a thermal equipment according to the present invention Figure 1 (Spiral anchoring nail transfer state);

[0029] Figure 2 Front view schematic diagram of a spiral anchoring construction device for the lining of a thermal equipment according to the present invention (Spiral anchoring nail transfer state);

[0030] Figure 3 Schematic three-dimensional view of a spiral anchoring construction device for the lining of a thermal equipment according to the present invention Figure 2 (Spiral anchoring nail welding state);

[0031] Figure 4 Schematic three-dimensional view of the welding state between the spiral anchoring nail and the wall of the thermal equipment according to the present invention;

[0032] Figure 5 Front view schematic diagram of the welding state between the spiral anchoring nail and the wall of the thermal equipment according to the present invention;

[0033] Figure 6 Top view schematic diagram of the welding state between the spiral anchoring nail and the wall of the thermal equipment according to the present invention;

[0034] Figure 7 Side view schematic diagram of the welding state between the spiral anchoring nail and the wall of the thermal equipment according to the present invention;

[0035] Figure 8 Schematic three-dimensional view of the construction state of the lining layer according to the present invention.

[0036] Description of reference numerals: 1, screw anchor; 2, lifting rod; 3, pin; 4, sleeve; 5, screw rod; 6, limit rod; 7, lining layer. Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] As Figure 1-8 shown, a lining screw anchor construction device for thermal equipment includes a screw anchor 1, and a lifting assembly is axially penetrated inside the screw anchor 1;

[0039] The lifting assembly includes a lifting rod 2, and the middle part of the lifting rod 2 abuts against the inner surface of the screw anchor 1;

[0040] Both ends of the lifting rod 2 are hinged to the lifting and lowering unit.

[0041] Specifically, the lifting and lowering unit includes a sleeve 4. The lower end of the sleeve 4 is hinged to the end of the lifting rod 2 through a pin 3;

[0042] The inside of the sleeve 4 is threadedly connected with a screw rod 5, and one end of the screw rod 5 is fixedly connected with a limit rod 6.

[0043] Specifically, the outer diameter of the screw anchor 1 is smaller than the layer thickness of the lining layer 7.

[0044] During installation, the lifting rod is axially inserted into the inside of the screw anchor, which is convenient for workers to transfer the screw anchor into the thermal equipment by means of the lifting rod, and make the two end points of the limit rod coincide with the pre-laid installation line, then the preliminary alignment operation of the screw anchor can be completed;

[0045] At both ends of the screw anchor, it is preliminarily fixedly connected to the wall of the thermal equipment by welding. After the preliminary connection is completed, the contact points between the screw anchor and the wall of the thermal equipment are welded in sequence to complete the fixation;

[0046] The articulation of the lifting rod and the lifting unit facilitates the construction workers to transport the spiral anchor nails. On the other hand, it facilitates the construction workers to perform alignment operations during the welding process of the spiral anchor nails and the wall of the thermal equipment, preventing the spiral anchor nails from deviating from the pre-placed sample line during the installation process, and can limit the spiral anchor nails to prevent them from deviating from the pre-placed construction line during the welding process, thereby ensuring the welding efficiency and welding effect of the spiral anchor nails. A jack can also be installed at the limit rod, and under the action of the screw rod and the sleeve, the lifting rod can be driven to rise upward to monitor the connection effect between the spiral anchor nails and the inner side of the thermal equipment.

[0047] Furthermore, when constructing spiral anchor nails on the inner wall of the arc-shaped thermal equipment, the relative length of the screw rod screwed into the sleeve is adjusted, and the limit rod is abutted against the bottom of the inner wall of the thermal equipment, so that the lifting rod drives the spiral anchor nail to abut against the top construction line of the inner wall of the thermal equipment, which is convenient for construction personnel to weld the spiral anchor nails on the top of the inner wall of the thermal equipment.

[0048] A construction method of a spiral anchoring construction device for a thermal equipment lining comprises the following steps:

[0049] S1. Rust removal: rust removal is performed on the inner wall of the thermal equipment and the outer wall of the spiral anchor nail by hand or sandblasting;

[0050] S2. Laying out wires: Construction personnel lay out wires on the inner wall of thermal equipment according to the design drawings;

[0051] S3. After the spiral anchor nails are brought into the site, the construction personnel separate the casing from the screw rod, and insert the casing and the lifting rod into the interior of the spiral anchor nails. The construction personnel then connect the casing with the screw rod, and place the spiral anchor nails on the laid construction line through the limit rods, so that the center lines of the limit rods at both ends coincide with the marked lines;

[0052] S4, welding, firstly perform preliminary welding and fixing of the two ends of the spiral anchor nail to the inner wall of the thermal equipment, and then perform supplementary welding of other contact points between the spiral anchor nail and the inner wall of the thermal equipment;

[0053] S5. Inspection and maintenance: lift the lifting rod through the limit rod, and the lifting rod abuts against the end of the spiral anchor nail away from the welding point. Lift the lifting rod with a certain force, and transfer the force to the spiral anchor nail through the lifting rod to determine the welding quality of the spiral anchor nail welding point, and deal with cracks, slag inclusions, weld nodules, burn-throughs, arc pits and needle-shaped pores;

[0054] S6, the spiral anchoring nail continues to be constructed, the pulling frame is separated from the spiral anchoring nail, and the steps S3-S5 are repeated to construct the spiral anchoring nail;

[0055] S7. Spot check: Use a hammer to strike the screw anchor. If the screw anchor does not separate from the inner wall of the thermal equipment and emits a predetermined metallic sound, it is qualified. Weld the unqualified positions.

[0056] S8. Finished product protection: Set a warning strip outside the screw anchor to prevent trampling.

[0057] S9. Lining layer construction: Fill the lining refractory material between the inner wall of the thermal equipment and the screw anchor, and level and compact the lining refractory material. The height of the lining layer is higher than that of the screw anchor.

[0058] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0059] The embodiments described above are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A spiral anchoring construction device for lining of thermal equipment, characterized in that: It comprises a spiral anchor nail (1), wherein a lifting assembly is penetrated in the interior of the spiral anchor nail (1) along the axial direction; The lifting assembly comprises a lifting rod (2), the middle portion of the lifting rod (2) abuts against the inner surface of the spiral anchor nail (1); Both ends of the lifting rod (2) are hinged to the lifting and lowering unit.

2. A spiral anchoring construction device for a thermal equipment lining according to claim 1, characterized in that: The lifting and lowering unit comprises a sleeve (4), the lower end of which is hinged to the end of the lifting rod (2) via a pin (3); The interior of the sleeve (4) is threadedly connected to the screw rod (5), and one end of the screw rod (5) is fixedly connected to the limiting rod (6).

3. The spiral anchoring construction device for the lining of thermal equipment according to claim 1 is characterized in that: The outer diameter of the spiral anchor nail (1) is smaller than the layer thickness of the lining layer (7).

4. A construction method for a spiral anchoring construction device for a thermal equipment lining, characterized in that: The steps include: S1. Rust removal: rust removal is performed on the inner wall of the thermal equipment and the outer wall of the spiral anchor nail by hand or sandblasting; S2. Laying out wires: Construction personnel lay out wires on the inner wall of thermal equipment according to the design drawings; S3. After the spiral anchor nails are brought into the site, the construction personnel separate the casing from the screw rod, and insert the casing and the lifting rod into the interior of the spiral anchor nails. The construction personnel then connect the casing with the screw rod, and place the spiral anchor nails on the laid construction line through the limit rods, so that the center lines of the limit rods at both ends coincide with the marked lines; S4, welding, firstly perform preliminary welding and fixing of the two ends of the spiral anchor nail to the inner wall of the thermal equipment, and then perform supplementary welding of other contact points between the spiral anchor nail and the inner wall of the thermal equipment; S5. Inspection and maintenance: lift the lifting rod through the limit rod, and the lifting rod abuts against the end of the spiral anchor nail away from the welding point. Lift the lifting rod with a certain force, and transfer the force to the spiral anchor nail through the lifting rod to determine the welding quality of the spiral anchor nail welding point, and deal with cracks, slag inclusions, weld nodules, burn-throughs, arc pits and needle-shaped pores; S6, the spiral anchoring nail continues to be constructed, the pulling frame is separated from the spiral anchoring nail, and the steps S3-S5 are repeated to construct the spiral anchoring nail; S7. Spot check: Use a hammer to knock the spiral anchor nails. If the spiral anchor nails are not separated from the inner wall of the thermal equipment and emit a predetermined metal sound, they are qualified. If they are unqualified, they will be repaired by welding. S8. Finished product protection: set warning strips on the outside of the spiral anchor to prevent stepping on it; S9. Lining layer construction: fill the lining refractory material between the inner wall of the thermal equipment and the spiral anchor nails, and make the lining refractory material flat and dense. The height of the lining layer is higher than the height of the spiral anchor nails.

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