A method for disassembling and assembling a heat exchanger in a factory

Abstract

The present invention belongs to the technical field of equipment disassembly and assembly, and discloses a disassembly and assembly method for a heat exchanger in a factory building. The disassembly method comprises connecting a hand chain hoist to the top of the heat exchanger to be disassembled, and disassembling the equipment connected to the top and the front and rear parts of the heat exchanger to be disassembled; vertically pulling up the heat exchanger to be disassembled by the hand chain hoist, disassembling the equipment connected to the bottom of the heat exchanger to be disassembled, and placing a flatbed car under the heat exchanger to be disassembled; vertically lowering the heat exchanger to be disassembled onto the flatbed car by the hand chain hoist, removing the hand chain hoist, and pulling out the flatbed car by a towing mechanism; the installation method comprises placing the heat exchanger to be installed on the flatbed by the hand chain hoist, and moving it to the installation position by the towing mechanism; vertically pulling up the heat exchanger to be disassembled by the hand chain hoist, and installing the equipment connected to the bottom of the heat exchanger to be disassembled; vertically lowering the heat exchanger to be disassembled to the ground by the hand chain hoist, and installing the equipment connected to the top and the front and rear parts of the heat exchanger to be disassembled.

Description

Technical Field

[0001] The invention relates to the technical field of equipment disassembly and assembly, and in particular to a disassembly and assembly method for a heat exchanger in a factory building. Background Art

[0002] At present, in most cases, the installation, maintenance and replacement of equipment in the production plant cannot be directly lifted by a crane or the lifting is very difficult. Therefore, most of the equipment installation, maintenance and replacement rely on the cooperation of hand winches to move the equipment out little by little. During the construction process, the hand winch will inevitably be tilted, which makes the construction difficult, the risk factor is high, and the work efficiency is low. Summary of the invention

[0003] The invention provides a method for disassembling and assembling a heat exchanger in a factory building, which solves the problems of low working efficiency, high risk factor and the like of the existing method for disassembling and assembling equipment in the factory building.

[0004] The present invention can be achieved through the following technical solutions:

[0005] A method for disassembling and assembling a heat exchanger in a factory building, including a disassembly method and an installation method.

[0006] The removal method comprises the following steps:

[0007] Step 1: Connect the hand chain hoist to the top of the heat exchanger to be dismantled, and remove the equipment connected to the top, front and back of the heat exchanger to be dismantled;

[0008] Step 2: Use a hand chain hoist to pull up the heat exchanger to be disassembled vertically, remove the equipment connected to the bottom of the heat exchanger to be disassembled, and then place the flatbed truck under the heat exchanger to be disassembled;

[0009] Step 3: Use a hand chain hoist to lower the heat exchanger to be disassembled vertically onto a flatbed truck, remove the hand chain hoist, and then use the towing mechanism to pull the flatbed truck out;

[0010] The installation method comprises the following steps:

[0011] Step 1. Place the heat exchanger to be installed on the flat plate using the towing mechanism, move it to the installation position, and connect the hand chain hoist to the top of the heat exchanger to be installed;

[0012] Step 2: Use a hand chain hoist to pull up the heat exchanger to be disassembled vertically, move it out of the flatbed truck, and install the equipment connected to the bottom of the heat exchanger to be disassembled;

[0013] Step 3. Use a hand winch to lower the heat exchanger to be disassembled vertically to the ground, remove the hand winch, and install the equipment connected to the top, front and back of the heat exchanger to be disassembled.

[0014] Furthermore, the towing mechanism adopts a hand chain hoist, which is connected to the first hand chain hoist at the front end of the flatbed truck and the second hand chain hoist at the rear end. In step three, Step 1, the flatbed truck is pulled out or moved to the installation position by tightening one of the first hand chain hoist and the second hand chain hoist and loosening the other.

[0015] Furthermore, the flatbed truck includes a flat plate for carrying the heat exchanger, a plurality of movable wheels are arranged at the bottom of the flat plate, and hooks or through holes are arranged at the front and rear ends, and the hooks or through holes are connected to the towing mechanism.

[0016] The beneficial technical effects of the present invention are:

[0017] With the help of hand winches and flatbed trucks, the heat exchanger can be dismantled and installed. The hand winches are subjected to force in the vertical or horizontal direction, which reduces the risk of a sudden increase in tension when pulling at a large angle, and avoids the risk of equipment falling and damaging equipment, and crushing or injuring workers due to excessively large angles. The risk factor is low. In the process of moving the heat exchanger with the help of a flatbed truck, the moving efficiency is greatly improved. The whole process greatly reduces the construction cost, improves work efficiency, construction safety factor, and increases economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0019] Figure 1 It is a plan view of the turbine heat exchanger in the plant of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention when it is dismantled;

[0021] Among them, 1-hand hoist, 2-heat exchanger to be dismantled, 3-flatbed car, 31-moving wheel. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0023] As we all know, there are various equipments installed inside the plant of large chemical plants, such as turbine heat exchangers, and there are various pipelines around the equipments, such as Figure 1As shown, most of these devices are very heavy, ranging from a few tons to more than ten tons. When the equipment fails and needs to be replaced, it must be disassembled and assembled with the help of an automated crane, and the surrounding conveying pipelines are undoubtedly not conducive to the operation of the crane. Therefore, the present invention provides a disassembly and assembly method for a heat exchanger in a factory building, including a disassembly method and an installation method, wherein the disassembly method includes the following steps: Figure 2 As shown:

[0024] Step 1: Connect the hand chain hoist 1 to the top of the heat exchanger 2 to be dismantled, and dismantle the equipment connected to the top and the front and rear parts of the heat exchanger 2 to be dismantled; use the hand chain hoist 1 instead of a crane to carry out the dismantling, first dismantle the equipment connected to the top and the front and rear parts of the heat exchanger 2 to be dismantled, and prepare for the subsequent dismantling.

[0025] Step 2: Use the hand chain hoist 1 to vertically pull up the heat exchanger 2 to be disassembled, remove the equipment connected to the bottom of the heat exchanger 2 to be disassembled, and then place the flatbed truck 3 under the heat exchanger 2 to be disassembled;

[0026] Step three, use the hand winch 1 to lower the heat exchanger 2 to be disassembled vertically onto the flatbed truck 3, remove the hand winch 1, and then use the towing mechanism to pull out the flatbed truck 3; use the flatbed truck 3 to move the disassembled heat exchanger out, avoiding the oblique pulling caused by using only the hand winch, and at the same time, there is no need for multiple people to work together, which greatly saves manpower and material resources and improves work efficiency.

[0027] The installation method is the reverse implementation of the above removal method, and specifically includes the following steps:

[0028] Step 1. Use the towing mechanism to place the heat exchanger to be installed on the flat plate, move it to the installation position, and connect the hand chain hoist to the top of the heat exchanger to be installed;

[0029] Step 2: Use a hand chain hoist to pull up the heat exchanger to be disassembled vertically, move it out of the flatbed truck, and install the equipment connected to the bottom of the heat exchanger to be disassembled;

[0030] Step 3. Use a hand winch to lower the heat exchanger to be disassembled vertically to the ground, remove the hand winch, and install the equipment connected to the top, front and back of the heat exchanger to be disassembled.

[0031] Taking into account the actual situation of the chemical plant, the towing mechanism can still use a hand chain hoist, which is connected to the first hand chain hoist at the front end of the flatbed truck and the second hand chain hoist at the rear end. In the above step three, Step 1, the flatbed truck is pulled out or moved to the installation position by tightening one of the first hand chain hoist and the second hand chain hoist and loosening the other, ensuring the stability of the flatbed truck's movement and avoiding oblique pulling.

[0032] The flatbed vehicle 3 includes a flatbed for carrying the heat exchanger, a plurality of moving wheels 31 are arranged at the bottom of the flatbed, and hooks or through holes are arranged at the front and rear ends, and the hooks or through holes are connected to the towing mechanism. Considering the very heavy weight of the heat exchanger, it is best to set 6-8 moving wheels 31, which are arranged at intervals on both sides of the flatbed, and can use the eight-inch extra-heavy nylon wheels produced by Huagu Company, which are solid structures and have a large weighing force.

[0033] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A method for disassembling and assembling a heat exchanger in a factory, characterized in that: Including removal methods and installation methods, The removal method comprises the following steps: Step 1: Connect the hand chain hoist to the top of the heat exchanger to be dismantled, and remove the equipment connected to the top, front and back of the heat exchanger to be dismantled; Step 2: Use a hand chain hoist to pull up the heat exchanger to be disassembled vertically, remove the equipment connected to the bottom of the heat exchanger to be disassembled, and then place the flatbed truck under the heat exchanger to be disassembled; Step 3: Use a hand chain hoist to lower the heat exchanger to be disassembled vertically onto a flatbed truck, remove the hand chain hoist, and then use the towing mechanism to pull the flatbed truck out; The installation method comprises the following steps: Step 1. Place the heat exchanger to be installed on the flat plate using the towing mechanism, move it to the installation position, and connect the hand chain hoist to the top of the heat exchanger to be installed; Step 2: Use a hand chain hoist to pull up the heat exchanger to be disassembled vertically, move it out of the flatbed truck, and install the equipment connected to the bottom of the heat exchanger to be disassembled; Step 3. Use a hand chain hoist to lower the heat exchanger to be disassembled vertically to the ground, remove the hand chain hoist, and install the equipment connected to the top, front and back of the heat exchanger to be disassembled; The towing mechanism adopts a hand chain hoist, which is connected to the first hand chain hoist at the front end of the flatbed truck and connected to the second hand chain hoist at the rear end. In step three, Step 1, the flatbed truck is pulled out or moved to the installation position by tightening one of the first hand chain hoist and the second hand chain hoist and loosening the other.

2. The method for disassembling and assembling a heat exchanger in a factory building according to claim 1, characterized in that: The flatbed vehicle comprises a flatbed for carrying the heat exchanger, a plurality of moving wheels are arranged at the bottom of the flatbed, and hooks or through holes are arranged at the front and rear ends, and the hooks or through holes are connected to the towing mechanism.

Images