Oxygen production cold box steel structure and mounting structure thereof

Abstract

The utility model discloses an oxygen generation cold box steel structure and an installation structure thereof, and particularly relates to the field of oxygen generation cold boxes, the oxygen generation cold box steel structure comprises a main tower steel structure box body and a heat exchanger steel structure box body, the main tower steel structure box body comprises a main tower steel structure box body and a fractionating tower, and the fractionating tower is arranged in the steel structure box body. A support is installed on the heat exchanger steel structure box body, a bearing beam is fixedly installed on the support, a heat exchanger is installed on the bearing beam, fixing angle plates are fixedly arranged at the bottoms of the two ends of the heat exchanger, and the heat exchanger is detachably installed on the bearing beam through the fixing angle plates. The first layer of steel structure module is directly assembled on the cold box foundation, the other five layers of steel structure modules are all assembled on the ground, and finally a large crawler crane enters a site to integrally hoist the single-layer steel structure module, so that the problems that an existing oxygen production cold box steel structure is long in installation period, workers work at high places for a long time, and the cost is low are solved. And large hoisting machinery is long in service time and high in installation cost.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen-generating cold boxes, and more specifically, to an oxygen-generating cold box steel structure and an installation structure thereof. Background Art

[0002] The cold box is the core equipment of the oxygen production project. It is mainly composed of a steel structure box and an internal distillation tower. The steel structure box generally includes the main tower steel structure box and the heat exchanger steel structure box. The main tower steel structure box is divided into multiple layers according to the structural nodes. The first layer of steel structure modules at the bottom of the main tower steel structure box and the heat exchanger steel structure box are directly installed on the cold box foundation. Before installation, construction preparation and foundation acceptance are required, and then the tower base is installed, the cold box frame structure is assembled and hoisted as a whole, followed by the installation and fixation of the heat exchanger load-bearing beam, the installation of the plate top steel structure bracket, the hoisting of the tower equipment, and finally the installation of the cold box pipeline, valves, low-temperature cables and vortex flowmeter.

[0003] The steel structure box is generally supplied in parts and then assembled on site. However, the height of the main tower steel structure box can reach more than 60 meters. The existing construction method is to assemble it by building scaffolding. Not only does it take a long time for personnel to work at heights, resulting in a long installation period, but the large lifting machinery also has many lifting times and long usage time, which leads to high installation costs. Utility Model Content

[0004] The utility model provides an oxygen cold box steel structure and an installation structure thereof, which aims to solve the problem that the existing steel structure box construction method not only requires personnel to work at heights for a long time, resulting in a long installation period, but also requires large-scale lifting machinery to lift many times and for a long time.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oxygen cold box steel structure, comprising a main tower steel structure box and a heat exchanger steel structure box, the main tower steel structure box comprising a main tower steel structure box and a distillation tower, and the distillation tower is arranged inside the steel structure box, a bracket is installed on the heat exchanger steel structure box, a load-bearing beam is fixedly installed on the bracket, a heat exchanger is installed on the load-bearing beam, fixed angle plates are fixedly provided at the bottom of both ends of the heat exchanger, and the heat exchanger can be detachably installed on the load-bearing beam through the fixed angle plates.

[0006] The utility model also provides an installation structure of the oxygen cold box steel structure, including a calibration component, and the calibration component is movably arranged between the fixed angle plate and the load-bearing beam, the calibration component includes two groups of side calibration blocks, a middle calibration block is fixedly arranged between the two groups of side calibration blocks, and guide surfaces are arranged on the tops of the side calibration blocks and the middle calibration block, the guide surfaces of the side calibration blocks are inclined toward the middle calibration block, and the guide surface of the middle calibration block is inclined toward one end close to the fixed angle plate.

[0007] In a preferred embodiment, a support assembly is provided at the bottom of the calibration assembly, and the support assembly can be detachably installed on the load-bearing beam. The support assembly includes a support seat, a support block is fixedly provided on the top of the support seat, and a side calibration block is slidably provided on the top of the support block. A slot is provided on the side of the support seat close to the load-bearing beam, and the support seat is slidably arranged along the direction of the load-bearing beam through the slot.

[0008] In a preferred embodiment, a limiting plate is fixedly provided on the top of the supporting block, and the limiting plate is located at one end of the side calibration block.

[0009] In a preferred embodiment, a fixed seat is provided on one side of the support seat, and the fixed seat includes a fixed plate, which is fixedly connected to the support seat, and a stud component 1 passes through the middle of the fixed plate, and a top block is fixedly provided at one end of the stud component 1, and the top block abuts against one side of the load-bearing beam.

[0010] In a preferred embodiment, a clamping block is movably provided on one side of the fixing plate close to the load-bearing beam, and two groups of clamping blocks are arranged corresponding to the top and bottom of the load-bearing beam. A front end block is fixedly provided on one end of the clamping block away from the fixing plate, and a second stud member is passed through the interior of the front end block.

[0011] In a preferred embodiment, an adjustment opening is provided inside the fixing plate, an adjustment block is fixedly provided at one end of the clamping block away from the front end block, the adjustment block passes through the adjustment opening, and the adjustment block is vertically slidably arranged along the adjustment opening.

[0012] In a preferred embodiment, the fixing plate and the clamping block are installed on the load-bearing beam through the second stud member and the top block, and the second stud member and the top block are respectively located on both sides of the load-bearing beam.

[0013] The beneficial effects of the utility model are:

[0014] The utility model assembles the first layer of steel structure modules directly on the cold box basis, and the other five layers of steel structure modules are assembled on the ground. Finally, after the single-layer steel structure modules are assembled and placed, a large crawler crane enters the site to carry out the overall lifting of the single-layer steel structure modules, thereby reducing the number of lifting times and solving the problems of long installation period of the existing oxygen cold box steel structure, long-term high-altitude operation of personnel, long use time of large lifting machinery and high installation cost.

[0015] The utility model installs the calibration component on the load-bearing beam, then hoists the heat exchanger, and slides the fixed angle plate along the side calibration block to the middle calibration block until the fixed angle plate falls on the middle calibration block, and then falls along the middle calibration block to the set installation position on the load-bearing beam, and finally fixes the fixed angle plate on the load-bearing beam by bolts or welding to complete the installation. By adding the calibration component, the required width of the landing point of the fixed angle plate can be increased, and the fixed angle plate can be guided to be quickly positioned, thereby reducing the time for lateral adjustment of the heat exchanger back and forth.

[0016] The utility model facilitates the sliding adjustment of the calibration component and the accurate positioning after the adjustment through the support of the support component, so that the fixed angle plate can be quickly and accurately installed at the set position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the steel structure box structure of the heat exchanger of the utility model.

[0019] Figure 3 This is a schematic diagram of the end structure of the heat exchanger of the utility model.

[0020] Figure 4 This is a schematic diagram of the calibration component structure of the utility model.

[0021] Figure 5 This is a schematic diagram of the end structure of the support assembly of the utility model.

[0022] Figure 6 It is a schematic diagram of the side structure of the clamping block of the utility model.

[0023] Figure 7 This is a schematic diagram of the fixed angle plate of the utility model before it is put into place.

[0024] Figure 8 It is a schematic diagram of the position adjustment of the fixed angle plate of the utility model.

[0025] Fig. 9 It is a schematic diagram of the fixed angle plate of the utility model after being put into place.

[0026] The accompanying drawings are marked as follows: 1. main tower steel structure box; 2. heat exchanger steel structure box; 21. bracket; 22. load-bearing beam; 3. heat exchanger; 31. fixed angle plate; 4. calibration assembly; 41. side calibration block; 42. middle calibration block; 5. support assembly; 51. support seat; 511. slot; 512. support block; 513. limit plate; 52. fixed seat; 521. fixed plate; 5211. adjustment port; 5212. stud component one; 5213. top block; 522. clamping block; 5221. front end block; 5222. adjustment block; 523. stud component two. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0028] Refer to the instruction manual Figure 1 to Figure 2A steel structure of an oxygen cold box includes a main tower steel structure box 1 and a heat exchanger steel structure box 2. The main tower steel structure box 1 includes a main tower steel structure box and a fractionating tower, and the fractionating tower is arranged inside the steel structure box. A bracket 21 is installed on the heat exchanger steel structure box 2, and a load-bearing beam 22 is fixedly installed on the bracket 21. A heat exchanger 3 is installed on the load-bearing beam 22. Fixed angle plates 31 are fixedly provided at the bottoms of both ends of the heat exchanger 3. The heat exchanger 3 is detachably installed on the load-bearing beam 22 through the fixed angle plates 31.

[0029] It should be noted that the oxygen cold box steel structure is divided into six layers of steel structure modules according to the structural nodes. A single-layer steel structure module is about 12 meters. The first-layer steel structure module is on the concrete foundation, and the second-layer steel structure module is above the first-layer steel structure module, and so on.

[0030] In this embodiment, the implementation scenario is specifically as follows: the first layer of steel structure modules is directly assembled on the cold box foundation, and the remaining five layers of steel structure modules are assembled on the ground. The panel laying and welding of the steel structure modules are completed. The assembly time of a single-layer steel structure module is normally 8 to 9 days. The assembled single-layer steel structure modules are stored in the open space around the foundation. Since most of the work is completed on the ground, most of the construction workers' construction height is about 12 meters, thereby shortening the time for high-altitude operations and reducing the risks of high-altitude operations. Since the oxygen-generating cold box steel structure is supplied in loose parts and assembled on site, the delivery order is changed from the original first to sixth layers to the first, fifth, fourth, third, second and sixth layers in sequence. The first layer of steel structure is first installed directly on the foundation. The sixth-layer steel structure module is assembled when the distillation tower is hoisted. If the site permits, the sixth-layer can be shipped in advance to the back of the first layer. The large crawler crane enters the site after the sixth to second-layer steel structure modules are all assembled, which can greatly shorten the use time of the large crawler crane. In actual construction, the use time of the large crawler crane can be shortened by about 1 / 3, which solves the problems of long installation period of existing oxygen cold box steel structure, long-term high-altitude operation of personnel, long use time of large hoisting machinery and high installation cost.

[0031] In the installation project of the heat exchanger 3, a crane is currently used to place the heat exchanger 3 on the load-bearing beam 22 of the heat exchanger steel structure. At this time, the crane needs to adjust the landing position of the heat exchanger 3 back and forth horizontally to ensure that the heat exchanger 3 is installed at the set position on the load-bearing beam 22. Since the crane needs to be directed by the ground for adjustment, and the number of heat exchangers 3 to be installed on the heat exchanger steel structure box 2 is large, the adjustment time is too long and the construction period is extended. In order to solve this problem, the following technical solutions are also provided:

[0032] Refer to the instruction manual Figures 2 to 9 A mounting structure of an oxygen cold box steel structure includes a calibration component 4, and the calibration component 4 is movably arranged between a fixed angle plate 31 and a load-bearing beam 22, the calibration component 4 includes two groups of side calibration blocks 41, a middle calibration block 42 is fixedly arranged between the two groups of side calibration blocks 41, and guide surfaces are arranged on the tops of the side calibration blocks 41 and the middle calibration block 42, the guide surfaces of the side calibration blocks 41 are inclined toward the middle calibration block 42, and the guide surfaces of the middle calibration block 42 are inclined toward one end close to the fixed angle plate 31.

[0033] It should be noted that the cross-section of the side calibration block 41 is a trapezoid, with its inclined surface facing upwards and toward the middle calibration block 42. The cross-section of the middle calibration block 42 is a right triangle, with its inclined surface facing upwards and toward the fixed angle plate 31. The middle calibration block 42 is correspondingly arranged at the installation position set by the fixed angle plate 31.

[0034] In this embodiment, the implementation scenario is as follows: first, the calibration assembly 4 is installed on the load-bearing beam 22, and then the heat exchanger 3 is hoisted. When the width of the side calibration block 41 is 0.5m, the fixed angle plate 31 of the heat exchanger 3 is allowed to have a deviation distance of 0.5m in the left and right directions when it is placed. Then, the heat exchanger 3 is lowered. At this time, the fixed angle plate 31 falls on the guide surface of the side calibration block 41. Its state is shown in the attached figure. Figure 7 At this time, the fixed angle plate 31 slides along the side calibration block 41 to the middle calibration block 42 until the fixed angle plate 31 falls on the middle calibration block 42, and then falls along the middle calibration block 42 to the installation position set on the load-bearing beam 22. Finally, the fixed angle plate 31 is fixed to the load-bearing beam 22 by bolts or welding to complete the installation, and then the calibration component 4 is removed from one side. By adding the calibration component 4, the required width of the landing point of the fixed angle plate 31 can be increased, and the fixed angle plate 31 can be guided to be quickly in place, thereby reducing the time for lateral adjustment of the heat exchanger 3 back and forth.

[0035] Furthermore, a support assembly 5 is provided at the bottom of the calibration assembly 4, and the support assembly 5 can be detachably installed on the load-bearing beam 22. The support assembly 5 includes a support seat 51, a support block 512 is fixedly provided on the top of the support seat 51, and the side calibration block 41 is slidably arranged on the top of the support block 512. A slot 511 is provided on the side of the support seat 51 close to the load-bearing beam 22, and the support seat 51 is slidably arranged along the direction of the load-bearing beam 22 through the slot 511.

[0036] It should be noted that the support assembly 5 is used to support the calibration assembly 4, the cross-section of the slot 511 is concave, the load-bearing beam 22 is inserted into the groove of the slot 511, the cross-section of the support block 512 is L-shaped, and the side calibration block 41 is placed in the L-shaped groove of the support block 512.

[0037] Furthermore, a limiting plate 513 is fixedly provided on the top of the supporting block 512 , and the limiting plate 513 is located at one end of the side calibration block 41 .

[0038] It should be noted that the limiting plate 513 is used to limit the side calibration block 41 to prevent the side calibration block 41 from being separated from the supporting block 512 .

[0039] Furthermore, a fixed seat 52 is provided on one side of the support seat 51, and the fixed seat 52 includes a fixed plate 521, which is fixedly connected to the support seat 51, and a stud member 5212 passes through the middle of the fixed plate 521, and a top block 5213 is fixedly provided at one end of the stud member 5212, and the top block 5213 abuts against one side of the load-bearing beam 22.

[0040] It should be noted that the fixing plate 521 abuts against one side of the load-bearing beam 22 through the stud member 5212 and the top block 5213 to prevent the fixing plate 521 from sliding laterally along the load-bearing beam 22 .

[0041] Furthermore, a clamping block 522 is movably provided on one side of the fixing plate 521 close to the load-bearing beam 22, and two groups of clamping blocks 522 are arranged corresponding to the top and bottom of the load-bearing beam 22. A front end block 5221 is fixedly provided on one end of the clamping block 522 away from the fixing plate 521, and a stud member 523 is penetrated inside the front end block 5221.

[0042] It should be noted that the two groups of clamping blocks 522 clamp the load-bearing beam 22 through the second stud member 523 and the front end block 5221 .

[0043] Furthermore, an adjustment opening 5211 is opened inside the fixing plate 521 , an adjustment block 5222 is fixedly provided at one end of the clamping block 522 away from the front end block 5221 , the adjustment block 5222 penetrates the inside of the adjustment opening 5211 , and the adjustment block 5222 is vertically slidably arranged along the adjustment opening 5211 .

[0044] It should be noted that the adjustment block 5222 slides vertically along the corresponding adjustment opening 5211 to adjust the position of the clamping block 522 so as to adapt to the load-bearing beams 22 of different thicknesses.

[0045] Furthermore, the fixing plate 521 and the clamping block 522 are installed on the load-bearing beam 22 through the second stud member 523 and the top block 5213 , and the second stud member 523 and the top block 5213 are respectively located on both sides of the load-bearing beam 22 .

[0046] It should be noted that both the second stud member 523 and the first stud member 5212 are existing stud members, which include a threaded column and a fixing nut.

[0047] In this embodiment, the implementation scenario is specifically as follows: the support seat 51 is installed on the load-bearing beam 22 through the card slot 511, the two sets of clamping blocks 522 are clamped on the upper and lower parts of the load-bearing beam 22 respectively, and the side calibration block 41 is placed on the support block 512, as shown in the attached figure. Figure 4, move the support seat 51 and the fixed seat 52 laterally, adjust the middle calibration block 42 to the installation position corresponding to the set of the fixed angle plate 31, first tighten the fixing nut of the second stud member 523, so that the two groups of clamping blocks 522 clamp the load-bearing beam 22 from the top and bottom respectively, and the adjustment port 5211 provides a sliding guide for the adjustment block 5222 to facilitate the vertical movement and adjustment of the clamping block 522, and then tighten the fixing nut of the first stud member 5212, so that the threaded column of the first stud member 5212 pushes the top block 5213 to press against the side of the load-bearing beam 22. At this time, the second stud member 523 and the top block 5213 clamp the load-bearing beam 22 from both sides, and fix the side calibration block 41 and the middle calibration block 42 to the installation position set by the fixed angle plate 31. Through the support of the support assembly 5, the sliding adjustment of the calibration assembly 4 and the accurate positioning after adjustment are facilitated, so that the fixed angle plate 31 can be quickly and accurately installed in the set position.

[0048] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An oxygen cold box steel structure, characterized in that: The invention comprises a main tower steel structure box (1) and a heat exchanger steel structure box (2), wherein the main tower steel structure box (1) comprises the main tower steel structure box and a fractionating tower, and the fractionating tower is arranged inside the steel structure box, and a bracket (21) is installed on the heat exchanger steel structure box (2), a load-bearing beam (22) is fixedly installed on the bracket (21), and a heat exchanger (3) is installed on the load-bearing beam (22), and the bottoms of both ends of the heat exchanger (3) are fixedly provided with fixed angle plates (31), and the heat exchanger (3) is detachably installed on the load-bearing beam (22) through the fixed angle plates (31).

2. An installation structure for an oxygen cold box steel structure, characterized in that: The invention comprises a main tower steel structure box (1), a heat exchanger steel structure box (2), a heat exchanger (3) and a calibration component (4), wherein the calibration component (4) is used to install the heat exchanger (3) on the heat exchanger steel structure box (2), and the calibration component (4) is movably arranged between a fixed angle plate (31) of the heat exchanger (3) and a load-bearing beam (22) of the heat exchanger steel structure box (2), and the calibration component (4) comprises two groups of side calibration blocks (41), a middle calibration block (42) is fixedly arranged between the two groups of side calibration blocks (41), and the tops of the side calibration blocks (41) and the middle calibration block (42) are both provided with guide surfaces, the guide surfaces of the side calibration blocks (41) are inclined toward the middle calibration block (42), and the guide surfaces of the middle calibration blocks (42) are inclined toward one end close to the fixed angle plate (31).

3. The installation structure of the oxygen cold box steel structure according to claim 2 is characterized in that: A support assembly (5) is provided at the bottom of the calibration assembly (4), and the support assembly (5) is detachably mounted on the load-bearing beam (22). The support assembly (5) comprises a support seat (51), a support block (512) is fixedly provided on the top of the support seat (51), the side calibration block (41) is slidably arranged on the top of the support block (512), a slot (511) is provided on a side of the support seat (51) close to the load-bearing beam (22), and the support seat (51) is slidably arranged along the direction of the load-bearing beam (22) through the slot (511).

4. The installation structure of the oxygen cold box steel structure according to claim 3 is characterized in that: A limiting plate (513) is fixedly provided on the top of the supporting block (512), and the limiting plate (513) is located at one end of the side calibration block (41).

5. The installation structure of the oxygen cold box steel structure according to claim 4 is characterized in that: A fixing seat (52) is provided on one side of the support seat (51), and the fixing seat (52) comprises a fixing plate (521), and the fixing plate (521) is fixedly connected to the support seat (51), and a stud member 1 (5212) passes through the middle of the fixing plate (521), and a top block (5213) is fixedly provided at one end of the stud member 1 (5212), and the top block (5213) abuts against one side of the load-bearing beam (22).

6. The installation structure of the oxygen cold box steel structure according to claim 5 is characterized in that: A clamping block (522) is movably provided on one side of the fixing plate (521) close to the load-bearing beam (22), and two groups of clamping blocks (522) are provided corresponding to the top and bottom of the load-bearing beam (22). A front end block (5221) is fixedly provided on one end of the clamping block (522) away from the fixing plate (521), and a second stud member (523) is penetrated inside the front end block (5221).

7. The installation structure of the oxygen cold box steel structure according to claim 6 is characterized by: An adjustment opening (5211) is provided inside the fixing plate (521), and an adjustment block (5222) is fixedly provided at one end of the clamping block (522) away from the front end block (5221); the adjustment block (5222) passes through the adjustment opening (5211), and the adjustment block (5222) is vertically slidably arranged along the adjustment opening (5211).

8. The installation structure of the oxygen cold box steel structure according to claim 7 is characterized by: The fixing plate (521) and the clamping block (522) are installed on the load-bearing beam (22) through the second stud member (523) and the top block (5213), and the second stud member (523) and the top block (5213) are respectively located on both sides of the load-bearing beam (22).

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