Hydraulic lifting device in system for vertically hoisting high-pressure heater

Abstract

The utility model discloses a hydraulic lifting device in a system for vertically lifting a high-pressure heater. The hydraulic lifting device comprises a Lauschinger hydraulic lifting machine, a machine base of the Lauschinger hydraulic lifting machine, a lifting hook and a sling for connecting the lifting hook and the Lauschinger hydraulic lifting machine. The hydraulic lifting device further comprises a temporary beam frame lapped on the high-pressure heater mounting frame, the Locking hydraulic lifting machine is mounted on the temporary beam frame through a machine base, and an electromagnetic valve is arranged on a hydraulic pipeline of the Locking hydraulic lifting machine. The number of the Lauschinger hydraulic elevators is four, the four Lauschinger hydraulic elevators are arranged in a matrix mode, each Lauschinger hydraulic elevator is provided with a sling connected with a lifting hook, the four Lauschinger hydraulic elevators share a total liquid supply pipeline, and a switch of the total liquid supply pipeline is controlled by the same electromagnetic valve. The hoisting device has the advantages that the high-pressure heater with the weight of three hundred tons can be hoisted; the device can be built on site and is convenient to remove.

Description

Technical Field

[0001] The utility model relates to a hydraulic lifting device in a system for vertically hoisting a high-pressure heater, belonging to the technical field of thermal power installation. Background Art

[0002] At present, domestic power construction has turned to thermal power plants with 1000MW and higher parameters, and 1000MW ultra-supercritical unit projects have become the mainstream. With the continuous development of power construction projects and the continuous improvement of design levels, traditional horizontal high-pressure heaters cannot meet the needs of ultra-supercritical unit projects and have gradually been replaced by new vertical high-pressure heaters. The installation location has also changed greatly, from being arranged in the steam engine room to being arranged on the boiler steel frame, and the weight and external dimensions have also increased a lot (taking the 2×1 million kilowatt expansion and upgrading project of Changan Yiyang Power Generation Co., Ltd. as an example, the maximum weight of the high-pressure heater is 325.5 tons and the maximum height is 16200mm). Due to the compact structure and small space of the boiler steel frame K0 / K1, G1-G6, the truck crane or crawler crane cannot meet the hoisting of the vertical high-pressure heater, and it does not have the conditions for the steam engine room aerial hoisting. Therefore, the original horizontal high-pressure heater hoisting technology is no longer applicable to the hoisting of the vertical high-pressure heater, so it is necessary to study a set of hoisting solutions suitable for the vertical high-pressure heater arranged on the boiler steel frame. To this end, based on the 2×1 million kilowatt capacity expansion and upgrading project of Changan Yiyang Power Generation Co., Ltd., research on the hoisting of vertical high-pressure heaters was carried out.

[0003] Since the high-pressure heater is a long tank with large volume and heavy weight, and it is vertically suspended on the beam frame, with the lower end about ten meters above the ground, it is necessary to first vertically erect the heavy and bulky horizontal high-pressure heater (it can only be transported to the site in a horizontal position and temporarily stored on site in a horizontal position) and then vertically lift it. The whole process cannot cause the tank to sway significantly, otherwise, it will be difficult to control due to its heavy weight, causing damage to related facilities or even major accidents. Therefore, in the case where the existing lifting facilities cannot be used, it is necessary to build a lifting system that is safe and reliable, simple and efficient to operate, and easy to remove after assembly. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to lift the heavy and bulky high-pressure heater to a height of nearly 30 meters when the existing lifting facilities cannot be used.

[0005] In view of the above problems, the technical solution proposed by the utility model is:

[0006] A hydraulic lifting device in a system for vertically lifting a high-pressure heater comprises a hoist, a hook and a sling connecting the hook and the hoist. It also comprises a temporary beam frame mounted on a high-pressure heater mounting frame, the hoist is mounted on the temporary beam frame through a machine base, and a solenoid valve is provided on the hydraulic pipeline of the hoist.

[0007] The hoist is a Lausinger hydraulic hoist.

[0008] There are four Lausinger hydraulic hoists arranged in a matrix. Each Lausinger hydraulic hoist has a sling connected to a hook. The four Lausinger hydraulic hoists share a common fluid supply pipeline, and the switch of the total fluid supply pipeline is controlled by the same solenoid valve.

[0009] The temporary beam frame is composed of two parallel main beams and two groups of shoulder-pole beams placed on the two main beams in a crisscross pattern. Each group of shoulder-pole beams has two parallel shoulder-pole beams, and two Lausinger hydraulic hoists are installed in parallel on one group of shoulder-pole beams.

[0010] There are two Lausinger hydraulic hoists, each of which has a sling connected to a hook. The two Lausinger hydraulic hoists share a common fluid supply pipeline, and the switch of the common fluid supply pipeline is controlled by the same solenoid valve.

[0011] The temporary beam frame is composed of two parallel main beams and two shoulder-pole beams placed on the two main beams in a criss-cross shape, and two Lausinger hydraulic hoists are installed in parallel on the two shoulder-pole beams.

[0012] The hook has two hooks which are arranged in back-to-back directions.

[0013] As an option, the hoist is an electric winch. Beneficial Effects

[0014] 1. Capable of lifting a high-pressure heater weighing 300 tons;

[0015] 2. It can be built on site and is easy to remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the hydraulic lifting device of the first embodiment lifting the high-pressure heater;

[0017] Figure 2 It is a front view schematic diagram of the hydraulic lifting device described in Example 1;

[0018] Figure 3 It is a top view schematic diagram of the hydraulic lifting device described in Example 1;

[0019] Figure 4 This is a schematic diagram of the liquid supply pipeline of the hydraulic lifting device described in Example 1;

[0020] Figure 5 It is a top view schematic diagram of the hydraulic lifting device described in the second embodiment;

[0021] Figure 6 This is a simplified diagram of the fluid supply pipeline of the hydraulic lifting device described in Example 2.

[0022] In the figure: 1. Lausinger hydraulic hoist; 101. Machine base; 2. Hook; 3. Lifting rope; 4. Temporary beam frame; 401. Main beam; 402. Shoulder beam; 5. Main liquid supply pipeline; 6. Solenoid valve; 7. High-pressure heater. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings: Embodiment 1

[0024] like Figure 1 As shown in FIG. 4 , a hydraulic lifting device in a system for vertically lifting a high-pressure heater comprises a hoist, a hook 2, a sling 3 connecting the hook 2 and the hoist, and a temporary beam frame 4 placed on a high-pressure heater mounting frame. The hoist is installed on the temporary beam frame 4 through a machine base 101. A solenoid valve 6 is provided on the hydraulic pipeline of the hoist. When in use, the hoist can lift a high-pressure heater 7 weighing hundreds of tons to a designed height by controlling the solenoid valve 6.

[0025] Preferably, the hoist is a commercially available Rausinger hydraulic hoist 1 .

[0026] There are 4 Lausinger hydraulic hoists 1 arranged in a matrix, each of which has a sling 3 connected to a hook 2, and the 4 Lausinger hydraulic hoists 1 have a total fluid supply pipeline 5, which is controlled by the same solenoid valve 6. The use of 4 Lausinger hydraulic hoists 1 can reduce the specifications of the Lausinger hydraulic hoists 1, reduce the weight of a single Lausinger hydraulic hoist 1, and facilitate assembly, disassembly and transportation.

[0027] For the setting of four Lausinger hydraulic hoists 1, the temporary beam frame 4 is composed of two parallel main beams 401 and two groups of shoulder beams 402 placed on the two main beams 401 in a criss-cross shape. Each group of shoulder beams 402 has two parallel shoulder beams 402, and every two Lausinger hydraulic hoists 1 are installed in parallel on one group of shoulder beams 402.

[0028] As an option, the hook 2 has two hooks arranged in opposite directions. Embodiment 2

[0029] like Figure 5 , 6As shown, the difference from the first embodiment is that there are two Lausinger hydraulic lifts 1, each of which has a sling 3 connected to the hook 2, and the two Lausinger hydraulic lifts 1 share a total liquid supply pipeline 5, and the switch of the total liquid supply pipeline 5 is controlled by the same solenoid valve 6. The temporary beam frame 4 is composed of two parallel main beams 401 and two shoulder beams 402 placed on the two main beams 401 in a crisscross pattern, and the two Lausinger hydraulic lifts 1 are installed in parallel on the two shoulder beams 402. In this way, compared with the first embodiment, the specifications of the Lausinger hydraulic lift 1 are increased, but the installation becomes relatively simple. Embodiment 3

[0030] The difference between the embodiment described above and the embodiment described above is that the hoist is an electric winch (not shown in the figure).

[0031] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the protection scope of the present invention. Any modifications in equivalent forms should be regarded as falling within the protection scope of the present invention.

Claims

1. A hydraulic lifting device in a system for vertically lifting a high-pressure heater, comprising a hoist, a hook (2), and a sling (3) connecting the hook (2) and the hoist, characterized in that: It also includes a temporary beam frame (4) mounted on the high-pressure heater mounting frame, the hoist is mounted on the temporary beam frame (4) via a machine base (101), and a solenoid valve (6) is provided on the hydraulic pipeline of the hoist.

2. The hydraulic lifting device in the system for vertically hoisting a high-pressure heater according to claim 1 is characterized in that: The hoist is a Lausinger hydraulic hoist (1).

3. The hydraulic lifting device in the system for vertically hoisting a high-pressure heater according to claim 2 is characterized in that: There are four Lausinger hydraulic hoists (1) arranged in a matrix. Each Lausinger hydraulic hoist (1) has a sling (3) connected to a hook (2). The four Lausinger hydraulic hoists (1) share a common fluid supply pipeline (5), and the switch of the common fluid supply pipeline (5) is controlled by the same solenoid valve (6).

4. The hydraulic lifting device in the system for vertically hoisting a high-pressure heater according to claim 3 is characterized in that: The temporary beam frame (4) is composed of two parallel main beams (401) and two groups of shoulder beams (402) placed on the two main beams (401) in a crisscross pattern, each group of shoulder beams (402) having two parallel shoulder beams (402), and two Lausinger hydraulic hoists (1) are installed in parallel on a group of shoulder beams (402).

5. The hydraulic lifting device in the system for vertically hoisting a high-pressure heater according to claim 2, characterized in that: There are two Lausinger hydraulic hoists (1) in total, each of which has a sling (3) connected to a hook (2). The two Lausinger hydraulic hoists (1) share a common fluid supply pipeline (5), and the switch of the common fluid supply pipeline (5) is controlled by the same solenoid valve (6).

6. The hydraulic lifting device in the system for vertically hoisting a high-pressure heater according to claim 5, characterized in that: The temporary beam frame (4) is composed of two parallel main beams (401) and two shoulder beams (402) placed on the two main beams (401) in a crisscross pattern. Two Lausinger hydraulic hoists (1) are installed in parallel on the two shoulder beams (402).

7. The hydraulic lifting device in the system for vertically hoisting a high-pressure heater according to claim 1, characterized in that: The hook (2) has two hooks arranged in back-to-back relation.

8. The hydraulic lifting device in the system for vertically hoisting a high-pressure heater according to claim 1, characterized in that: The hoist is an electric winch.

Images