CN221079638U - Stretching mechanism and quick shielding device - Google Patents
Stretching mechanism and quick shielding device Download PDFInfo
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- CN221079638U CN221079638U CN202322600057.2U CN202322600057U CN221079638U CN 221079638 U CN221079638 U CN 221079638U CN 202322600057 U CN202322600057 U CN 202322600057U CN 221079638 U CN221079638 U CN 221079638U
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- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
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Abstract
The utility model relates to the technical field of radiation protection and discloses an extension mechanism and a rapid shielding device, wherein the extension mechanism comprises a shielding unit, a shielding device and a shielding device, wherein the shielding unit comprises a first shielding body and a second shielding body arranged on one side of the first shielding body; a support unit including a shield support; the mobile unit comprises a plurality of universal wheels arranged at the bottom of the shielding support, one-way wheels arranged at the bottom of the first shielding body and a push rod arranged at one side of the shielding support. The utility model has the beneficial effects that the radiation of the pebble-bed reactor is isolated and shielded through the compact shielding structure and absorbed through the shielding bodies, different shielding body numbers and shielding materials can be selected according to the field requirements, and the shielding range is expanded through the extension among the shielding bodies, so that the large-scale shielding of the radiation is realized.
Description
Technical Field
The utility model relates to the technical field of radiation protection, in particular to an extension mechanism and a rapid shielding device.
Background
The popularization of the nuclear power station brings great benefits to human beings and promotes the development of society, but the nuclear power station can generate radioactive fission products and activated corrosion products in the operation process, and the radioactive substances can harm human bodies, so special importance is paid to the radiation protection problem. The pebble-bed type high-temperature reactor adopts an online refueling mode to replace nuclear fuel, so that the radiation protection problem is more remarkable. The fuel loading and unloading system of the type realizes the functions of singulating, positioning and directional conveying of fuel balls through a series of special equipment outside a reactor, and certain probability of ball clamping exists in the running process due to the high-frequency rotation characteristic of the equipment. In order to protect the safety of the service personnel in the area near the position of the clamping ball, the service personnel needs to put on special radiation protection clothing and also needs to set rapid shielding for the high-radioactivity area.
The existing mode of setting radiation shielding for the high-radiation area is generally to shield by paving lead plates or concrete walls and the like, and the lead plates and the concrete walls used in the mode are very heavy, need to carry out a large amount of transportation, installation and maintenance work, and have large occupied area and serious waste of manpower and material resources.
Disclosure of utility model
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.
The present utility model has been made in view of the above-mentioned problems in the prior art that a large amount of transportation, installation and maintenance work is required to be performed in a manner of providing radiation shielding for a high-emissivity region, and manpower, material resources and space are wasted.
In order to solve the technical problems, the utility model provides the following technical scheme: an extension mechanism comprises a shielding unit, a first shielding body and a second shielding body, wherein the shielding unit comprises the first shielding body and the second shielding body is arranged on one side of the first shielding body;
And a supporting unit including a shielding support.
As a preferred embodiment of the stretching mechanism of the present utility model, wherein: the first shielding body comprises a handle arranged on one side of the first shielding body, a sliding rail arranged on one side of the first shielding body, inserting plates arranged on the upper side and the lower side of the first shielding body, and limiting protrusions arranged on two sides of the inserting plates.
As a preferred embodiment of the stretching mechanism of the present utility model, wherein: unlike the first shield, the second shield further includes a slide bar provided at one side thereof.
As a preferred embodiment of the stretching mechanism of the present utility model, wherein: the first shield further includes an extension plate disposed at one side thereof.
As a preferred embodiment of the stretching mechanism of the present utility model, wherein: the sliding rail is matched with the sliding rod.
As a preferred embodiment of the stretching mechanism of the present utility model, wherein: the shielding support comprises a shielding cavity arranged in the shielding support, and a plurality of guide grooves arranged at the upper end and the lower end of the shielding cavity.
As a preferred embodiment of the stretching mechanism of the present utility model, wherein: the guide groove also comprises a limiting block arranged at one end of the guide groove.
As a preferred embodiment of the stretching mechanism of the present utility model, wherein: the plugboard is inserted in the guide groove and can slide back and forth.
The stretching mechanism has the beneficial effects that: the expansion mechanism of the utility model isolates and shields the radiation of the pebble-bed reactor through a compact shielding structure and absorbs the radiation through the shielding bodies, different shielding body numbers and shielding materials can be selected according to the field requirements, and the expansion of the shielding bodies expands the shielding range to realize the large-scale shielding of the radiation.
Another object of the present utility model is to provide a fast shielding device, which is compact, fast and convenient, so as to solve the problem of radiation protection requirement of the overhaul site.
In order to solve the technical problems, the utility model also provides the following technical scheme: a quick-action shield comprising an extension mechanism; and the mobile unit comprises a plurality of universal wheels arranged at the bottom of the shielding support, one-way wheels arranged at the bottom of the first shielding body and a push rod arranged at one side of the shielding support.
As a preferred embodiment of the rapid shielding device of the present utility model, wherein: the first shielding body and the second shielding body shell are made of tungsten-based alloy steel materials, and shielding materials such as lead, boron or polyethylene are filled in the first shielding body and the second shielding body shell.
The rapid shielding device has the beneficial effects that: the rapid shielding device convenient to transport, install and maintain can meet the radiation protection requirement of an overhaul site and improve the on-site overhaul efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic three-dimensional structure of a receiving state of a rapid shielding device according to the present utility model;
FIG. 2 is a schematic three-dimensional view of the rapid shielding device in the extended state according to the present utility model;
FIG. 3 is a schematic diagram of a second shield in a shielding unit according to the present utility model;
Fig. 4 is a side view of a second shield in the shield unit of the present utility model.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 2, in a first embodiment of the present utility model, an extension mechanism is provided, which includes a shielding unit 100, including a first shielding body 101, and a second shielding body 102 disposed on one side of the first shielding body 101;
the support unit 200 includes a shield support 201.
The outer sides of the first shielding body 101 and the second shielding body 102 are made of high-density alloy steel such as carbon steel or tungsten-based alloy, and the inside is filled with shielding materials such as lead, boron or polyethylene, and the inside filling materials have high-density characteristics and can block radiation of high energy.
Preferably, the number of the first shielding bodies 101 is one, the number of the second shielding bodies 102 can be increased or decreased according to requirements, the first shielding bodies 101 and the second shielding bodies 102 are connected through sliding rails, the shielding bodies can be extended by pulling out the first shielding bodies 101, a larger shielding protection range is formed, and in the actual overhaul process, the shielding position can be conveniently adjusted at any time and the shielding direction can be conveniently changed through the pulling structure.
Example 2
Referring to fig. 1 to 4, in a second embodiment of the present utility model, an extension mechanism is further provided, and the extension mechanism further includes a first shielding body 101 including a handle 101a disposed at one side thereof, a sliding rail 101b disposed at one side of the first shielding body 101, a plugboard 101c disposed at the upper and lower sides of the first shielding body 101, and limiting protrusions 101d disposed at both sides of the plugboard 101 c.
Further, unlike the first shield 101, the second shield 102 further includes a slide bar 102a provided at one side thereof.
Further, the first shielding body 101 further includes an extension plate 101e provided at one side thereof.
Further, the slide rail 101b is engaged with the slide bar 102 a.
Further, the shield support 201 includes a shield chamber 201a provided therein, and a plurality of guide grooves 201b provided at upper and lower ends of the shield chamber 201 a.
Further, the guiding slot 201b further includes a limiting block 201b-1 disposed at one end thereof.
Further, the board 101c is inserted into the guide groove 201b and can slide back and forth.
Note that the first shield 101 is similar in structure to the second shield 102, except that: the first shielding body 101 is placed against the inner wall of the shielding support 201, so that a sliding rod 102a is not arranged on one side of the first shielding body close to the inner wall, a sliding rail 101b is only arranged on the other side of the first shielding body, in addition, the lower end of the first shielding body 101 is fixedly connected with an extension plate 101e, the extension plate 101e is clamped at the bottom of the shielding support 201 and used for supporting the first shielding body 101, a pulley or a supporting frame can be fixedly arranged at the bottom of the extension plate 101e and used for supporting, and when the first shielding body 101 is pulled out and stretched out, the extension plate 101e and the pulley at the bottom of the extension plate can be prevented from being separated by gravity so as to improve the stability of the device during extension.
Preferably, the handle 101a is fixedly installed on one side of the openings of the first shielding body 101 and the second shielding body 102, which faces the shielding support 201, so that the shielding body plate can be conveniently pulled out to extend, replace or increase or decrease the second shielding body 102, the sliding rail 101b is matched with the sliding bar 102a in a plugging manner, the sliding bar 102a can be inserted into the sliding rail 101b and linearly slide in the sliding rail 101b, the inserting plates 101c are symmetrically distributed and fixedly installed on the upper side and the lower side of the two shielding bodies, and the inserting plates 101c are matched with the guide grooves 201b of the shielding support 201, so that the shielding bodies can linearly slide in the guide grooves 201 b.
Preferably, two sides of the plugboard 101c are provided with limiting protrusions 101d, and the positions of the limiting protrusions 101d are at a certain distance from the end face of the plugboard 101c, specifically, in order to prevent the situation that when the shielding bodies can slide in the guide grooves 201b, the limiting protrusions 101d interfere with the sliding of the shielding bodies, so that the plugboard 101c cannot be inserted, two adjacent shielding bodies are limited through the limiting protrusions 101d, the two adjacent shielding bodies cannot be separated when being drawn, but the next shielding body is drawn by force, and the shielding bodies are continuously integrated, so that a better shielding effect is achieved.
Preferably, a groove path of the guide groove 201b closest to the outer end, that is, a groove path in which the last second shielding body 102 is inserted when the shielding body is extracted, is fixedly provided with a limiting block 201b-1 at the outer end thereof, so as to prevent the shielding body from being entirely separated during the extraction process, and perform limiting protection.
Preferably, the shielding support 201 is integrally welded and formed by square steel materials, and a pulley for transportation is installed at the bottom of the shielding support, so that the device can be conveniently and rapidly transported to a working area and the position can be adjusted.
When the device is used, firstly, the device is transported to an operation area, namely an area to be overhauled and needing to shield radiation, the position is adjusted, the handle 101a is pulled to pull out the first shielding body 101, at the moment, the rest second shielding body 102 can be pulled out in sequence to form a larger shielding area, the pulley at the bottom of the first shielding body 101 is fixed, the device is installed, the radiation released by the radiation source of the reactor can be absorbed by the shielding body and gradually attenuated in the overhauling process, and the special radiation protection clothing is needed to be worn by an overhauler to further protect the overhauler.
In summary, the stretching mechanism of the utility model isolates and shields the radiation of the pebble-bed reactor through a compact shielding structure and absorbs the radiation through the shielding bodies, different shielding body numbers and shielding materials can be selected according to field requirements, and the shielding range is expanded through stretching among the shielding bodies, so that the large-scale shielding of the radiation is realized.
Example 3
Referring to fig. 1 to 4, a third embodiment of the present utility model provides a rapid shielding device, which includes an extension mechanism; and a moving unit 300 including a plurality of universal wheels 301 provided at the bottom of the shield support 201, a one-way wheel 302 provided at the bottom of the first shield 101, and a push rod 303 provided at one side of the shield support 201.
Further, the outer shells of the first shielding body 101 and the second shielding body 102 are made of tungsten-based alloy steel materials, and shielding materials such as lead, boron or polyethylene are filled in the outer shells.
It should be noted that, the number of the universal wheels 301 is four, the universal wheels are respectively and fixedly installed at four corners of the bottom of the shielding support 201, the unidirectional wheels 302 are fixedly installed at the bottom of the extension plate 101e of the first shielding body 101, the direction of the unidirectional wheels 302 is consistent with the drawing direction of the first shielding body 101, the unidirectional wheels 302 are not used at the bottom of the extension plate 101e, so that the bottom of the extension plate 101e can be always pulled linearly, the sliding rail 101b and the sliding rod 102a between the shielding bodies are prevented from being blocked due to the fact that the angle is not opposite, the extension and storage are blocked, and the push rod 303 is fixedly installed at one side of the shielding support 201 needing to be pushed and stressed.
In conclusion, the rapid shielding device convenient to transport, install and maintain can meet the radiation protection requirement of an overhaul site and improve the overhaul efficiency.
It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.
Claims (10)
1. An extension mechanism, characterized in that: comprising the steps of (a) a step of,
A shielding unit (100) that includes a first shielding body (101), and a second shielding body (102) provided on one side of the first shielding body (101);
A support unit (200) comprising a shielding support (201).
2. The stretching mechanism of claim 1, wherein: the first shielding body (101) comprises a handle (101 a) arranged on one side of the first shielding body, a sliding rail (101 b) arranged on one side of the first shielding body (101), inserting plates (101 c) arranged on the upper side and the lower side of the first shielding body (101), and limiting protrusions (101 d) arranged on the two sides of the inserting plates (101 c).
3. The stretching mechanism of claim 2, wherein: unlike the first shield (101), the second shield (102) further includes a slide bar (102 a) provided at one side thereof.
4. The stretching mechanism of claim 3, wherein: the first shield (101) further includes an extension plate (101 e) provided at one side thereof.
5. The extension mechanism of claim 4, wherein: the sliding rail (101 b) is matched with the sliding rod (102 a).
6. The stretching mechanism of any one of claims 3-5, wherein: the shielding support (201) comprises a shielding cavity (201 a) arranged in the shielding support, and a plurality of guide grooves (201 b) arranged at the upper end and the lower end of the shielding cavity (201 a).
7. The extension mechanism of claim 6, wherein: the guide groove (201 b) further comprises a limiting block (201 b-1) arranged at one end of the guide groove.
8. The extension mechanism of claim 7, wherein: the inserting plate (101 c) is inserted in the guide groove (201 b) and can slide back and forth.
9. A rapid shielding device, characterized in that: comprising the stretching mechanism of any one of claims 1 to 8; and
The mobile unit (300) comprises a plurality of universal wheels (301) arranged at the bottom of the shielding support (201), one-way wheels (302) arranged at the bottom of the first shielding body (101), and a push rod (303) arranged at one side of the shielding support (201).
10. The rapid shielding apparatus of claim 9, wherein: the shells of the first shielding body (101) and the second shielding body (102) are made of tungsten-based alloy steel materials, and lead, boron or polyethylene shielding materials are filled in the shells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322600057.2U CN221079638U (en) | 2023-09-25 | 2023-09-25 | Stretching mechanism and quick shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322600057.2U CN221079638U (en) | 2023-09-25 | 2023-09-25 | Stretching mechanism and quick shielding device |
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| Publication Number | Publication Date |
|---|---|
| CN221079638U true CN221079638U (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322600057.2U Active CN221079638U (en) | 2023-09-25 | 2023-09-25 | Stretching mechanism and quick shielding device |
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| Country | Link |
|---|---|
| CN (1) | CN221079638U (en) |
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2023
- 2023-09-25 CN CN202322600057.2U patent/CN221079638U/en active Active
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