CN214468543U - Hydraulic turnover device for sodium-cooled fast reactor evaporator - Google Patents

Abstract

This novel turning device that belongs to, concretely relates to sodium-cooled fast reactor evaporator hydraulic pressure turning device. The utility model provides a sodium-cooled fast reactor evaporator hydraulic pressure turning device, includes the bracket component, sets up pneumatic cylinder and pipeline on the bracket component, still sets up the upset subassembly on the bracket component, and the upset subassembly can be turned over to vertical position by horizontal position under the effect of pneumatic cylinder, and the subassembly is held tightly in the last setting of upset subassembly, holds equipment tightly at upset subassembly upset in-process, prevents that equipment from tumbling and breaking away from the upset subassembly. This neotype effect that is showing is: adopt this turning device to carry out the evaporimeter upset and need carry out equipment level and transport, take one's place on the upset support and start the pneumatic cylinder, with the vertical two-step operation of equipment upset, about 25min when hoist and mount transportation process, about 35min when the vertical process of equipment upset is expected to be used, hold the device tightly and open equipment and promote and keep away from 5min when the upset support is expected to be used, about 65min when the upset of whole equipment is total to be used, whole upset process is high-efficient, orderly, single equipment upset is introduced and can be accomplished at 1 working day.

Description

Hydraulic turnover device for sodium-cooled fast reactor evaporator

Technical Field

This novel turning device that belongs to, concretely relates to sodium-cooled fast reactor evaporator hydraulic pressure turning device.

Background

The sodium-cooled fast reactor evaporator is a key device of a second loop of a fourth-generation nuclear power in China, and has the same function as a third-generation nuclear power evaporator, namely, heat exchange is completed in the sodium-cooled fast reactor evaporator to form superheated steam with a certain temperature, and then a steam turbine is pushed to generate electricity. The total length of the sodium-cooled fast reactor evaporator is about 21m, the minimum value of the outer diameter of the equipment is phi 0.9m, and the net weight of the equipment is about 51 t. The equipment is horizontally loaded, and is vertically overturned and hoisted by the crawler crane to be introduced into an installation workshop.

For the equipment with small diameter and large length, the turning mode commonly used at home and abroad at present is as follows: a first and a second vehicle lifting method; secondly, a trolley is arranged at the tail part, and a mast crane lifting method is used at the front end; thirdly, an arc-shaped support is installed at the tail part, and a front-end crawler crane lifting method and the like are adopted. In all three methods, the top and the bottom of the evaporator body are required to bear loads, so that the equipment body generates certain deflection deformation under the action of self gravity in the lifting process. According to earlier stage calculation, if the sodium-cooled fast reactor evaporator adopts the both ends atress to overturn, equipment deflection is great, easily causes the inside heat-transfer pipe of equipment to warp, defects such as key welding seam fracture, causes whole equipment to damage when serious.

To solve the above problems, a novel turnover device needs to be developed to safely and reliably complete the turnover of the evaporator, and meanwhile, the turnover device is also popularized and applied to the turnover of the same type of equipment in the later period.

SUMMERY OF THE UTILITY MODEL

The novel content is to the defect of prior art, provides a sodium-cooled fast reactor evaporator hydraulic pressure turning device.

This is novel to realize like this:

the utility model provides a sodium-cooled fast reactor evaporator hydraulic pressure turning device, includes the bracket component, sets up pneumatic cylinder and pipeline on the bracket component, still sets up the upset subassembly on the bracket component, and the upset subassembly can be turned over to vertical position by horizontal position under the effect of pneumatic cylinder, and the subassembly is held tightly in the last setting of upset subassembly, holds equipment tightly at upset subassembly upset in-process, prevents that equipment from tumbling and breaking away from the upset subassembly.

The hydraulic turnover device for the sodium-cooled fast reactor evaporator comprises a support assembly and a turnover base frame, wherein the support assembly comprises a turnover base frame which is a part similar to a ladder shape, and an auxiliary hydraulic cylinder is arranged on the turnover base frame.

As above, the hydraulic turnover device for the sodium-cooled fast reactor evaporator comprises a holding component, wherein the turnover support is a part similar to a ladder shape, a saddle is arranged on the turnover support, the upper surface of the saddle is arc-shaped, the radian is matched with the appearance radian of the evaporator at the position, a hydraulic holding mechanism is arranged on the turnover support, and one end of the turnover support is connected with a support component shaft.

The hydraulic turnover device for the sodium-cooled fast reactor evaporator comprises a hydraulic cylinder, wherein one end of the hydraulic cylinder is fixedly connected to a turnover underframe, and the other end of the hydraulic cylinder is fixedly connected to a turnover support.

The hydraulic turnover device for the sodium-cooled fast reactor evaporator is characterized in that an expansion bracket is further arranged on the turnover underframe.

The hydraulic turnover device for the sodium-cooled fast reactor evaporator comprises two hydraulic cylinders.

The hydraulic turnover device for the sodium-cooled fast reactor evaporator is characterized in that the thrust of the hydraulic cylinder is 200t, and the stroke is 4 m.

This neotype effect that is showing is: adopt this turning device to carry out the evaporimeter upset and need carry out equipment level and transport, take one's place on the upset support and start the pneumatic cylinder, with the vertical two-step operation of equipment upset, about 25min when hoist and mount transportation process, about 35min when the vertical process of equipment upset is expected to be used, hold the device and open, 5min when equipment promotes and keeps away from the upset support and expects to be used, about 65min when whole equipment upset is total to be used, whole upset process is high-efficient, in order, single equipment upset is introduced and can be accomplished at 1 working day. One 25t truck crane is needed in the process of installing the overturning accessory, and one 800t crawler crane is needed in the process of overturning.

If do not adopt hydraulic pressure turning device, need adopt two crawler cranes, occupy great hoist and mount place, two crane operation risks are great at the upset in-process, and it is slow to rise speed, foresees that an equipment upset and taking one's place need 1.5 ~ 2 workdays, and efficiency is lower, and the risk is higher.

The hydraulic turnover device is applicable to nuclear power equipment, is also applicable to thin and long heavy equipment in petrochemical industry, and is high in efficiency, safe and reliable in construction process.

Drawings

FIG. 1: schematic diagram of overturning device of sodium-cooled fast reactor evaporator

FIG. 2 is a drawing: lifting schematic diagram of evaporator turnover device

FIG. 3: schematic diagram of evaporator in-place turnover device

FIG. 4 is a drawing: schematic diagram of evaporator turnover process

FIG. 5: evaporator turnover vertical schematic diagram

Wherein 1 hydraulic pressure enclasping mechanism, 2 upset supports, 3 expansion brackets, 4 upset underframes, 5 pneumatic cylinders, 6 auxiliary hydraulic cylinders, 7 evaporimeters

Detailed Description

The sodium-cooled fast reactor evaporator turnover device adopts a hydraulic system jacking technology, the evaporator body is located on the turnover support, the hydraulic cylinder is pushed to extend out by starting the hydraulic pump station, the turnover support rotates around a hinge point, then the equipment is turned to a vertical state, the turnover support is stressed in the whole turnover process, the equipment body is not greatly deformed, and the whole turnover process is safe and reliable. According to the upstream design file, it is determined that only the upper ear type support is stressed after the equipment is in place, and the rest parts do not bear additional load, so that the stress state of the equipment after the equipment is in place is fully considered by the overturning support in the design process, the support table is designed at the front end of the overturning support, only the contact position of the ear type support bears external force in the overturning process of the evaporator, and the bottom of the equipment is not loaded. The overturning bracket is optimally designed for many times, and a trapezoidal cross section structure is selected, so that enough rigidity is provided in the overturning process of the equipment. The base of the turnover device is provided with a frame made of box-shaped beams, an expansion support is arranged, and the stability of the whole device is improved by the expansion support in the turnover process of the equipment.

According to the weight of the equipment and the overturning support, two hydraulic cylinders with the thrust of 200t are selected as main power, two small hydraulic cylinders are selected as auxiliary power at the end part of the equipment, the overturning support is jacked to exceed a certain angle through synchronous actions of the auxiliary hydraulic cylinders and the main hydraulic cylinder in the earlier stage of overturning of the equipment, and then the main hydraulic cylinder stretches out to overturn the equipment to be in a vertical state. The equipment is firmly fixed on the overturning support through the hydraulic holding device on the overturning support in the whole overturning process, and after the equipment is vertical, the sling at the top of the equipment is stressed, and the hydraulic holding device is opened to hoist the equipment to an installation workshop. The whole set of hydraulic system is reasonable in design, and the problems of small jacking prophase thrust angle and difficult jacking are solved through the auxiliary hydraulic cylinder. Through remote control hydraulic pressure cohesion device, the risk of the vertical back personnel high altitude construction of equipment has been relieved, and the safe and reliable nature in whole upset and the hoist and mount process strengthens greatly.

In order to enhance the angle control in the turning process, related artificial intelligence is added in the set. The industrial vision recognition system is adopted to replace human eyes to monitor the angle, so that the vision error is reduced, and the tipping risk in the turning process is reduced.

The steam generator turning device mainly comprises a turning bottom frame, a turning support, a hydraulic jacking system, a hydraulic enclasping mechanism and the like, and is shown in the attached drawings 1-5, and the operation method is as follows:

1) the overturning device is introduced near an overturning site and is matched with a crane to be positioned on the concrete ground;

2) opening the expansion bracket, and installing an expansion bracket locking pin shaft;

3) placing a manual hydraulic jack at the support position of the expansion bracket;

4) opening a visual identification system, manually adjusting a hydraulic jack by matching a visual identification display instrument, and ensuring that the underframe of the turnover device is in a horizontal state;

5) opening the hydraulic holding mechanism, positioning the equipment on the overturning bracket by using a crane, and adjusting the lower supporting surface of the lug type support to be in contact with the supporting platform on the upper part of the overturning bracket;

6) closing the hydraulic holding mechanism, and adjusting the levelness of the underframe of the turnover device by using the cooperation of the visual recognition system again;

7) a balancing weight is in place on the underframe of the turnover device;

8) a vertical lifting device is arranged at the top of the equipment and is connected with a main lifting hook of the crawler crane;

9) starting a hydraulic jacking system, and turning the equipment to a vertical state;

10) lifting a lifting hook of the crawler crane to a lifting rigging to bear force, opening a hydraulic holding mechanism, lifting the equipment, then translating, and keeping away from the overturning bracket;

11) operating the hydraulic jacking system, retracting the oil cylinder and placing the overturning bracket in a horizontal state;

12) the device is lifted to the installation position and brought into position.

Claims (7)

1. The utility model provides a sodium-cooled fast reactor evaporimeter hydraulic pressure turning device which characterized in that: including the bracket component, set up pneumatic cylinder and pipeline on the bracket component, still set up the upset subassembly on the bracket component, the upset subassembly can be turned over to vertical position by horizontal position under the effect of pneumatic cylinder, and the subassembly is held tightly in the last setting of upset subassembly, holds equipment tightly at upset subassembly upset in-process.

2. The hydraulic turnover device of the sodium-cooled fast reactor evaporator as recited in claim 1, characterized in that: the support assembly comprises a turnover bottom frame (4), the turnover bottom frame (4) is a part similar to a ladder, and an auxiliary hydraulic cylinder (6) is arranged on the turnover bottom frame (4).

3. The hydraulic turnover device of the sodium-cooled fast reactor evaporator as claimed in claim 2, characterized in that: embrace subassembly of tightly including upset support (2), upset support (2) are similar ladder type's part, set up the saddle on upset support (2), the saddle upper surface is the arc, curved radian matches with the appearance radian that will install evaporimeter (7) in this position, set up hydraulic pressure on upset support (2) and embrace mechanism (1), the one end and the bracket component hub connection of upset support (2).

4. The hydraulic turnover device of the sodium-cooled fast reactor evaporator as claimed in claim 3, characterized in that: the overturning assembly comprises a hydraulic cylinder (5), one end of the hydraulic cylinder (5) is fixedly connected to the overturning chassis (4), and the other end of the hydraulic cylinder is fixedly connected to the overturning support (2).

5. The hydraulic turnover device of the sodium-cooled fast reactor evaporator as claimed in claim 4, characterized in that: an expansion bracket (8) is also arranged on the overturning chassis (4).

6. The hydraulic turnover device of the sodium-cooled fast reactor evaporator as recited in claim 5, characterized in that: the hydraulic cylinders (5) are two in total.

7. The hydraulic turnover device of the sodium-cooled fast reactor evaporator as recited in claim 6, characterized in that: the thrust of the hydraulic cylinder (5) is 200t, and the stroke is 4 m.

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