CN216577650U

CN216577650U - Sealing flange dismounting device

Info

Publication number: CN216577650U
Application number: CN202220098014.1U
Authority: CN
Inventors: 赵桂根; 李文豪; 陈鑫; 王阳; 姚杰
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-05-24
Anticipated expiration: 2032-01-14

Abstract

The utility model relates to a device is demolishd to sealing flange, include: the lifting device comprises a first fixing plate, a second fixing plate, a supporting rod, a clamping jaw and a lifting assembly, wherein the first fixing plate and the second fixing plate are arranged in parallel at intervals and are connected through the supporting rod; the clamping jaw is arranged in a groove between the tank body and the sealing flange; one end of the lifting component is connected with the second fixing plate, and the other end of the lifting component is connected with the clamping jaw and used for driving the clamping jaw to move along the direction far away from the tank body. The above-mentioned scheme that this application provided, through with first fixed plate and second fixed plate card on filtering the jar, then with the jack catch card at the inslot between filtering jar and the sealing flange, utilize lifting unit to drive the jack catch and remove to just can dismantle sealing flange gets off, wholly demolish device safety is safe, effectively reduce personnel and stain the risk, sealing flange takedown time and personnel working strength have been shortened, when guaranteeing the quality, the risk that greatly reduced personnel and place stained.

Description

Sealing flange dismounting device

Technical Field

The utility model relates to an equipment technical field for the nuclear power especially relates to a sealing flange demolishs device.

Background

In the complete disassembly inspection work of the SEBIM safety valve control cabinet in the nuclear power plant, as shown in FIG. 3, a sealing flange 12 on a filter tank 11 needs to be removed, and the sealing flange 12 is connected with the filter tank 11 through an upper sealing ring, a lower sealing ring and twelve fastening screws 13.

The method for removing the sealing flange 12 at present comprises the following steps: after the corresponding fastening screw 13 is loosened, the sealing flange 12 is knocked obliquely downwards by a rubber hammer until the sealing flange 12 overcomes the acting force of the sealing ring and then slowly loosens from the filter tank 11. The method has the following problems: the knocking force and direction of the rubber hammer are not easy to control, and the efficiency is low; the radioactive waste water of a primary loop remained in the filtering tank is easily splashed at the moment of loosening the sealing flange, so that the contamination of personnel and sites is caused; the sealing flange is susceptible to damage under the effect of sustained knocks.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a sealing flange removing device, which aims at the problem that the existing sealing flange removing device is low in efficiency and easy to damage the sealing flange.

The utility model provides a device is demolishd to sealing flange, include: the tank comprises a first fixing plate, a second fixing plate, a supporting rod, a clamping jaw and a lifting assembly, wherein the first fixing plate and the second fixing plate are used for being fixed on a tank body; the first fixing plate and the second fixing plate are arranged in parallel at intervals and are connected through the supporting rod; the clamping jaws are arranged in a groove between the tank body and the sealing flange; one end of the lifting assembly is connected with the second fixing plate, and the other end of the lifting assembly is connected with the clamping jaw and used for driving the clamping jaw to move along the direction far away from the tank body.

Above-mentioned device is demolishd to sealing flange, through blocking first fixed plate and second fixed plate on filtering the jar, then with the jack catch card in filtering the inslot between jar and the sealing flange, utilize lifting unit to drive the jack catch and remove, thereby just can dismantle sealing flange, wholly demolish process safety and soundly, convenient and fast, effectively reduce personnel and stain the risk, sealing flange dismantlement time and personnel working strength have been shortened, maintenance technical staff's work efficiency and reduce strength have effectively been improved, when guaranteeing the quality, the risk that greatly reduced personnel and place stained.

In one embodiment, the lifting assembly comprises a screw rod, one end of the screw rod is rotatably connected with the second fixing plate, the screw rod can move relative to the second fixing plate along the axial direction, and the other end of the screw rod is connected with the clamping jaw.

In one embodiment, the lifting assembly further comprises a first nut, the first nut is in threaded connection with the screw rod, and the first nut is located on one side, facing the jaw, of the second fixing plate or one side, facing away from the jaw, of the second fixing plate.

In one embodiment, the clamping device further comprises a second nut and a third nut, the second nut and the third nut are both arranged at one end, far away from the second fixing plate, of the screw rod, the clamping jaw is sleeved on the screw rod, and the clamping jaw is located between the second nut and the third nut.

In one embodiment, the shaft hole on the claw is in threaded fit with the screw rod.

In one embodiment, the jaws are provided with sharp corners that mate with the chamfers of the sealing flange.

In one embodiment, the jaws are provided with reinforcing ribs.

In one embodiment, the nut further comprises a fourth nut, a fifth nut and a sixth nut; the fourth nut, the fifth nut and the sixth nut are in threaded connection on the supporting rod, the fourth nut is located on one side, deviating from the first fixing plate, of the second fixing plate, and the first fixing plate is located between the fifth nut and the sixth nut.

In one embodiment, the first fixing plate and the second fixing plate each have an inner surface for abutting against at least a part of an outer peripheral surface of the can.

In one embodiment, three support rods are uniformly arranged between the first fixing plate and the second fixing plate; the lifting assembly comprises three lead screws, the three lead screws are uniformly distributed on the second fixing plate, and the positions of the lead screws correspond to the positions of the supporting rods.

Drawings

Fig. 1 is a schematic structural view of a sealing flange removing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the jaws of FIG. 1;

fig. 3 is a schematic view of a conventional canister.

The figures are labeled as follows:

10. a first fixing plate; 20. a second fixing plate; 30. a support bar; 40. a screw rod; 50. a claw; 501. a sharp corner portion; 60. a first nut; 70. a second nut; 80. a third nut; 901. a fourth nut; 902. and a fifth nut.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 3, a sealing flange 12 is generally fitted to one end of the opening of the canister 11. In a specific application, the opening of the filter tank 11 may be at the upper end, the lower end or the side end. Hereinafter, the sealing flange 12 will be described as an example of the lower end of the canister 11.

Moreover, in particular applications, the filter canister may be replaced with any field, function, and form of canister body, and the following description of the present application will be given by way of example of a nuclear grade filter canister 11.

As shown in fig. 1, in an embodiment of the present invention, a sealing flange removing device is provided, including: the first fixing plate 10, the second fixing plate 20, the support rod 30, the jaw 50 and the lifting assembly. The first fixing plate 10 and the second fixing plate 20 are both used for being fixed on the filter tank 11, for example, being matched with the outer circumference arc surface of the filter tank 11, wherein the first fixing plate 10 and the second fixing plate 20 are arranged in parallel at intervals, and the first fixing plate 10 and the second fixing plate 20 are connected through the support rod 30; the clamping jaws 50 are arranged in a groove between the filter tank 11 and the sealing flange 12; one end of the lifting component is connected with the second fixing plate 20, and the other end of the lifting component is connected with the clamping jaw 50, so as to drive the clamping jaw 50 to move along the direction far away from the filter tank 11.

As shown in fig. 3, U-shaped bolts 14 are further provided on the outer circumferential surface of the canister 11, and the U-shaped bolts 14 protrude relatively, so that certain support and fixation of the first and

second fixing plates

10 and 20 can be provided. When using, through the U type bolt 14 top with first fixed plate 10 card on filtering jar 11, then with 50 cards of jack catch in sealed flange 12 with filter the inslot between jar 11, utilize lifting unit to drive jack catch 50 downstream, thereby dismantle sealed flange 12, wholly demolish process safety and soundly, convenient and fast, effectively reduce personnel and stain the risk, sealed flange 12 dismantlement time and personnel working strength have been shortened, maintenance technical personnel's work efficiency and reduce strength have effectively been improved, when guaranteeing the quality, greatly reduced personnel and the risk that the place stained.

In some embodiments, the lifting assembly of the present application includes a screw 40, one end of the screw 40 is rotatably connected to the second fixing plate 20, the screw 40 can move relative to the second fixing plate 20 in an axial direction, and the other end of the screw 40 is connected to the latch 50. When the screw 40 moves in the vertical direction, the claw 50 is moved.

In some embodiments, the lifting assembly of the present application further includes a first nut 60, the first nut 60 being threadedly coupled to the lead screw 40, the first nut 60 being located on a side of the second fixing plate 20 facing the jaw 50 or a side facing away from the jaw 50, depending on the type of internal thread of the first nut 60.

When the screw rod 40 needs to be moved, the screw rod 40 is in threaded connection with the second fixing plate 20 by rotating the first nut 60, and when the position of the second fixing plate 20 is fixed, the screw rod 40 can be driven to move on the second fixing plate 20 along the axial direction by rotating the first nut 60, so that the clamping jaw 50 on the screw rod 40 is driven to move, the clamping jaw 50 is far away from the filter tank 11 to move downwards, and the sealing flange 12 is detached from the opening of the filter tank 11.

It should be noted that the structure of the lifting assembly including the lead screw and the first nut in the embodiment of the present application is only an example, and in other alternative schemes, other structures may be adopted, for example, the lifting assembly includes a worm wheel and a worm, or a gear and a rack. The specific structure of the lifting assembly is not particularly limited by the application, as long as the structure can achieve the purpose of the application.

In some embodiments, the sealing flange removing device further includes a second nut 70 and a third nut 80, wherein the second nut 70 and the third nut 80 are both disposed at an end of the lead screw 40 far away from the second fixing plate 20, the jaw 50 is sleeved on the lead screw 40, and the jaw 50 is located between the second nut 70 and the third nut 80. The provision of the second and

third nuts

70, 80 facilitates the securing of the jaws 50 to the lead screw 40.

In some embodiments, the shaft hole on the pawl 50 in the present application is threadedly engaged with the lead screw 40.

In some embodiments, as shown in fig. 2, the jaws 50 of the present application are provided with sharp corners 501 that mate with the chamfers of the sealing flange 12. In use, the sharp corner 501 of the claw 50 is inserted into the corresponding chamfer of the sealing flange 12.

In some embodiments, to avoid the jaws 50 breaking when the sealing flange 12 is removed, the present application provides reinforcing ribs on the jaws 50.

In some embodiments, the sealing flange removal device of the present application further comprises a fourth nut 901, a fifth nut 902, and a sixth nut; wherein, the fourth nut 901, the fifth nut 902 and the sixth nut are all screwed on the support rod 30, the fourth nut 901 is located at the lower side of the second fixing plate 20, that is, at the side departing from the claw 50 in the disassembling direction of the sealing flange 12, and the first fixing plate 10 is located between the fifth nut 902 and the sixth nut.

Further, as shown in fig. 1, the second fixing plate 20 is fixed on the filter tank 11 by the fourth nut 901, the lifting assembly and the jaw 50, that is, after the jaw 50 is connected with the lifting assembly, the force applied by the lifting assembly to the first fixing plate 10 and the second fixing plate 20 is downward, at this time, the fourth nut 901 is disposed at the lower side of the second fixing plate 20 to block the second fixing plate 20 from moving downward, so as to indirectly fix the second fixing plate 20, and at the same time, the second fixing plate 20 is detachably connected with the support rod 30. Not limited to the above, in other embodiments, the second fixing plate 20 and the first fixing plate 10 may be fixed together in other manners to provide support for the lifting of the screw rod 40, which is not described in detail herein.

In some embodiments, as shown in fig. 1, the first and

second fixing plates

10 and 20 of the present application are each of a U-shaped structure. At least part of the inner side surfaces of the first fixing plate 10 and the second fixing plate 20 are arc-shaped and are used for matching with part of the outer circumference arc surface of the filter tank 12. The jaws 50 are positioned between the first fixing plate 10 and the second fixing plate 20.

Three support rods 30 are uniformly arranged between the first fixing plate 10 and the second fixing plate 20; the lifting assembly comprises three lead screws 40, the three lead screws 40 are uniformly distributed on the second fixing plate 20, and the positions of the lead screws 40 correspond to the positions of the support rods 30. The uniformly distributed support rods 30 and the lead screws 40 can ensure that the stress of the whole device is uniform when the device works, and the working stability of the device for disassembling the sealing flange is improved.

Without being limited thereto, in other embodiments, any one of the first fixing plate 10 and the second fixing plate 20 may be a combined plate and may be engaged with the entire circumference arc of the canister 12, for example, composed of two detachably connected or openable plates, each having an inner side surface engaged with one-half circumference arc of the canister 12. And on this basis, the even distribution of lead screw 40 and jack catch 50 can further make jack catch 50 more even and balanced to the effort of sealing flange 12, and then, be favorable to the dismantlement of sealing flange 12.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A sealing flange removal apparatus, comprising: the tank comprises a first fixing plate (10), a second fixing plate (20), a supporting rod (30), a clamping jaw (50) and a lifting assembly, wherein the first fixing plate (10) and the second fixing plate (20) are used for being fixed on a tank body;

the first fixing plate (10) and the second fixing plate (20) are arranged in parallel at intervals, and the first fixing plate (10) and the second fixing plate (20) are connected through the supporting rod (30);

the clamping jaw (50) is arranged in a groove between the tank body and the sealing flange; one end of the lifting assembly is connected with the second fixing plate (20), and the other end of the lifting assembly is connected with the clamping jaw (50) and used for driving the clamping jaw (50) to move along the direction far away from the tank body.

2. The sealing flange removal device according to claim 1, wherein the lifting assembly comprises a screw (40), one end of the screw (40) is rotatably connected with the second fixing plate (20), the screw (40) can move relative to the second fixing plate (20) along the axial direction, and the other end of the screw (40) is connected with the claw (50).

3. The sealing flange removal device according to claim 2, wherein the lifting assembly further comprises a first nut (60), the first nut (60) is in threaded connection with the lead screw (40), and the first nut (60) is located on a side of the second fixing plate (20) facing the jaw (50) or a side facing away from the jaw (50).

4. The sealing flange removing device according to claim 2, further comprising a second nut (70) and a third nut (80), wherein the second nut (70) and the third nut (80) are both arranged at one end of the screw rod (40) far away from the second fixing plate (20), the clamping jaw (50) is sleeved on the screw rod (40), and the clamping jaw (50) is located between the second nut (70) and the third nut (80).

5. The sealing flange removal device of claim 4, wherein the shaft hole on the jaw (50) is threadedly engaged with the lead screw (40).

6. Device according to claim 1, characterized in that said jaws (50) are provided with sharp corners (501) cooperating with the chamfers of said sealing flange.

7. Device according to claim 6, characterized in that said jaws (50) are provided with stiffening ribs.

8. The sealing flange removal apparatus of claim 1, further comprising a fourth nut (901), a fifth nut (902), and a sixth nut;

the fourth nut (901), the fifth nut (902) and the sixth nut are all in threaded connection with the support rod (30), the fourth nut (901) is located on one side, away from the first fixing plate (10), of the second fixing plate (20), and the first fixing plate (10) is located between the fifth nut (902) and the sixth nut.

9. Sealing flange removal device according to any one of claims 2 to 8, characterized in that the first fixing plate (10) and the second fixing plate (20) each have an inner side for abutment against at least a portion of the outer peripheral surface of the tank.

10. The sealing flange removing device according to claim 9, characterized in that three support rods (30) are uniformly arranged between the first fixing plate (10) and the second fixing plate (20); the lifting assembly comprises three lead screws (40), the three lead screws (40) are uniformly distributed on the second fixing plate (20), and the positions of the lead screws (40) correspond to the positions of the supporting rods (30).