Method for mounting a ground penetrating valve

Abstract

The application provides a mounting method for a ground-penetrating valve, relates to the technical field of ground-penetrating valves, and adopts a mode of mounting a plurality of valve bodies and a lifting point frame on a mounting platform; through the mounting mode based on the anti-lifting mold layer and the steel cover during the mounting process, the installation precision of the valve body can be measured and adjusted before the fixed structure is formed by pouring concrete, the problem that in the prior art, the ground-penetrating valve is directly mounted into the platform after pouring on the mounting platform by workers, and it is difficult to guarantee the installation requirements of the ground-penetrating valve during the installation process due to the fact that the installation area is fixed is solved, the installation frequency of the ground-penetrating valve is improved, and the construction cycle is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ground penetrating valve, and particularly to a mounting method for ground penetrating valve. BACKGROUND

[0002] The ground penetrating valve is a special valve penetrating the radiation protection shield layer through a transmission device, which is widely used in nuclear chemical engineering. The ground penetrating valve directly affects the safety functions of the process system, such as containment of radioactive substances, prevention of nuclear criticality, and radiation shielding. The ground penetrating valve belongs to the safety class of radioactive and chemical equipment. According to the classification, the ground penetrating valve can be divided into straight-through and right-angle valves. The main function of the ground penetrating valve is to control the valve body on the other side from the operation side, so as to control the flow of the internal medium and adjust the flow of the internal medium. The ground penetrating valve is mainly installed between the biological layer and the radioactive layer. The valve body is located in the equipment room with high radioactivity, and the actuator is installed in the maintenance hall. The valve body and the actuator are effectively isolated by the reinforced concrete shield layer, which is suitable for on-site control by the operator through the actuator. Since the flow medium in the ground penetrating valve contains radioactivity, the parameters such as the perpendicularity, installation angle and sealing performance of the ground penetrating valve must be strictly controlled during installation.

[0003] In the prior art, after the installation platform is poured, the ground penetrating valve is directly installed on the platform. According to the installation position of the ground penetrating valve, a single ground penetrating valve installation method is adopted to perform secondary pouring in the installation area. The overall installation efficiency of the ground penetrating valve is low, the construction period is long, and the labor intensity of the workers is large. SUMMARY

[0004] The purpose of the present application is to provide a mounting method for ground penetrating valve, in order to alleviate the technical problems in the prior art that the workers usually pour the installation platform after installation, then directly install the ground penetrating valve on the platform, and then adopt a single ground penetrating valve installation method to perform secondary pouring in the installation area according to the installation position of the ground penetrating valve. The overall installation efficiency of the ground penetrating valve is low, the construction period is long, and the labor intensity of the workers is large.

[0005] In the first aspect, the mounting method for ground penetrating valve comprises an installation platform, a plurality of valve bodies, a lifting point frame, a sleeve assembly and a bottom pipeline. The plurality of valve bodies and the lifting point frame are installed on the installation platform, and the lifting point frame is used for supporting the valve body. The valve body comprises a connecting portion and an operating portion, and the sleeve assembly is communicated between the connecting portion and the operating portion. The mounting method comprises the following steps:

[0006] S1: laying a steel facing in the installation platform, and reserving a plurality of installation holes in the steel facing, wherein the plurality of installation holes are used for installing the valve body;

[0007] S2: pouring the inverted formwork layer on the steel facing, and measuring and marking the installation position of the valve body;

[0008] S3: taking the crossbeam of the inverted formwork layer as the base point, hoisting the valve body into the hoisting point area, and erecting the hoisting point frame according to the position of the valve body;

[0009] S4: connecting the valve body with the installation platform, and pouring concrete into the installation platform;

[0010] S5: connecting the valve body with the bottom pipeline;

[0011] S6: testing the opening and closing smoothness of the valve body after pouring concrete.

[0012] With reference to the first possible implementation manner of the first aspect, the present application provides the first possible implementation manner of the first aspect, wherein the perpendicularity between the valve body and the installation platform is less than 1 / 1000 mm.

[0013] With reference to the third possible implementation manner of the first aspect, the present application provides the second possible implementation manner of the first aspect, wherein the angle between the valve body and the inverted formwork layer is less than 1°.

[0014] With reference to the first aspect, the present application provides the third possible implementation manner of the first aspect, wherein the valve body is provided with a connecting flange, and the connecting flange is detachably connected with a connecting piece.

[0015] With reference to the first possible implementation manner of the first aspect, the present application provides the fourth possible implementation manner of the first aspect, wherein further comprising a hoisting piece, the hoisting piece is connected with the connecting flange through the connecting piece, and the hoisting piece is used for moving the valve body.

[0016] With reference to the fourth possible implementation manner of the first aspect, the present application provides the fifth possible implementation manner of the first aspect, wherein the side wall of the valve body is provided with an anchor bar, and the anchor bar is used for welding between the valve body and the inner wall of the installation hole.

[0017] With reference to the fourth possible implementation manner of the first aspect, the present application provides the sixth possible implementation manner of the first aspect, wherein the bottom of the valve body is further provided with a connecting plate, and the connecting plate is used for connecting with the steel facing.

[0018] With reference to the sixth possible implementation manner of the first aspect, the present application provides the seventh possible implementation manner of the first aspect, wherein a connecting port is arranged between the valve body and the sleeve assembly, and a temperature sensing test piece is pasted in the connecting port.

[0019] In combination with the seventh possible implementation manner of the first aspect, the present application provides an eighth possible implementation manner of the first aspect, wherein the valve body is provided with a welding part on the peripheral side.

[0020] In combination with the eighth possible implementation manner of the first aspect, the present application provides a ninth possible implementation manner of the first aspect, wherein the connecting part is installed in the mounting hole.

[0021] The present application has the following beneficial effects: the multiple valve bodies and the lifting point frame are installed on the installation platform, the temporary lifting point frame is erected according to the installation area of the ground-penetrating valve during the installation process based on the inverted formwork layer and the steel cover installation mode, the valve body is lifted and transported into the lifting point frame, the installation precision of the valve body can be measured and adjusted before the concrete is poured to form a fixed structure, so as to ensure the installation quality of the ground-penetrating valve, and after the multiple valve bodies are installed and fixed at the same time, the first and second pouring can be performed, thereby solving the technical problems of the prior art, such as low installation efficiency of the ground-penetrating valve, long construction period and high labor intensity of workers, improving the installation efficiency and shortening the construction period.

[0022] In order to make the above objectives, characteristics and advantages of the present application more apparent, clear and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are referred to for detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0024] Figure 1 The installation structure schematic diagram of the valve body in the ground-penetrating valve installation method provided by the present application is shown in the following figure;

[0025] Figure 2 The structure schematic diagram of the lifting and transportation of the valve body in the ground-penetrating valve installation method provided by the present application is shown in the following figure;

[0026] Figure 3 The structure schematic diagram of the lifting point frame in the ground-penetrating valve installation method provided by the present application is shown in the following figure.

[0027] Icon: 100 - mounting platform; 200 - valve body; 210 - anchor; 220 - connecting plate; 230 - welding part; 240 - connecting port; 300 - lifting point frame; 400 - lifting element. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, such as no separate marking, should be understood as basic quantities of International System of Units, or derived quantities derived from basic quantities by mathematical operations such as multiplication, division, differentiation or integration.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Embodiment one

[0032] As shown in Figure 1 , Figure 2 , Figure 3 The mounting method for ground penetrating valve provided by the embodiment of the present application includes a mounting platform 100, a plurality of valve bodies 200, a lifting point frame 300 and a sleeve assembly, the plurality of valve bodies 200 and the lifting point frame 300 are mounted on the mounting platform 100, and the lifting point frame 300 is used for supporting the valve body 200; the valve body 200 includes a connecting part and an operating part, and a sleeve assembly is communicated between the connecting part and the operating part, including the following steps:

[0033] S1: lay a steel cover in the installation platform 100, and the steel cover is reserved with a plurality of installation holes for installation of the valve body 200;

[0034] S2: cast the inverted formwork layer on the steel cover, and measure and mark the installation position of the valve body 200;

[0035] S3: take the crossbeam of the inverted formwork layer as a base point, hoist the valve body 200 into the hoisting point area, and erect the hoisting point frame 300 according to the position of the valve body 200.

[0036] S5: connect the valve body 200 to the bottom pipe;

[0037] S6: test the opening and closing smoothness of the valve body 200 after the concrete is poured.

[0038] The valve body 200 and the hoisting point frame 300 are installed on the installation platform 100, and during the installation process, the temporary hoisting point frame 300 is erected based on the installation mode of the inverted formwork layer and the steel cover, and the valve body 200 is hoisted into the hoisting point frame 300. Before the concrete pouring forms a fixed structure, the installation precision of the valve body 200 can be measured and adjusted, which solves the technical problems of low installation efficiency and long construction period in the prior art. It should be noted that during the construction process of the installation platform 100, the installation platform 100 needs to be closely coordinated with the civil unit, the steel cover is restored first, and the steel cover is reserved with a reserved hole for installation of the ground penetrating valve; after the steel cover restoration acceptance is completed, the installation position of the ground penetrating valve is marked by steel binding; at the same time, after the steel binding is completed, the inverted formwork is poured to install the platform 100, a plurality of I-shaped steel are used to erect the hoisting point, and whether the position of the valve body 200 interferes with the civil inverted formwork construction item during the erection process is tracked to avoid interference in advance, and the inverted formwork tool acceptance is passed.

[0039] Further, the perpendicularity between the valve body 200 and the installation platform 100 is less than 1 / 1000 mm.

[0040] Further, the angle between the valve body 200 and the inverted formwork layer is less than 1°.

[0041] The valve body 200 is installed in the installation platform 100 in a hoisting manner, and the hoisting manner can facilitate the staff to adjust the installation angle of the valve body 200. In the embodiment, the position size adjustment of the valve body 200 ensures that the perpendicularity is ≦1 / 1000 mm, the full-length error is ≦2 mm, and the installation angle is ±1°, so that the internal working quality of the valve body 200 is ensured during the working process.

[0042] Further, the valve body 200 is provided with a connecting flange, and the connecting flange is detachably connected with a connecting piece.

[0043] Further, the hoisting piece 400 is further included, the hoisting piece 400 is connected with the connecting flange through the connecting piece, and the hoisting piece 400 is used for moving the valve body 200.

[0044] During the hoisting of the valve body 200, the connecting flange in the valve body 200 is used as a temporary lifting point, at the same time, a lifting device is hung through a lifting ring, a chain or the like, and the lifting should be stable and slow to avoid damage caused by accidental cutting.

[0045] It should be noted that the hoisting piece 400 can select a crane or other lifting device that can meet the hoisting quality requirements of the valve body 200, so as to improve the working efficiency and reduce the safety hidden danger; at the same time, during the erection process of the temporary lifting point frame 300 of the valve body 200, the erection is carried out based on the formwork of the civil anti-formwork layer, and enough space for hoisting and installing the valve body 200 needs to be reserved during the erection process to ensure that the temporary lifting point frame 300 of the valve body 200 is stable and firm.

[0046] Further, the side wall of the valve body 200 is provided with an anchor bar 210, and the anchor bar 210 is used for welding between the valve body 200 and the inner wall of the installation hole.

[0047] The side wall of the valve body 200 is welded with the anchor bar 210, after the position size adjustment of the ground penetrating valve ensures that the perpendicularity is ≦1 / 1000 mm, the full-length error is ≦2 mm, and the installation angle is ±1°, the anchor bar 210 is welded with the connecting steel bar in the installation platform 100, so that the installation position of the ground penetrating valve of the valve body 200 will not change during the pouring of the concrete; after the acceptance, the finished product protection is done, the tight wrapping of the compressed double cover and the upper part and the part below the disc is paid attention to, foreign matters are prevented from entering the valve cavity, so as to protect the valve from being damaged during the construction process.

[0048] Further, the bottom of the valve body 200 is further provided with a connecting plate 220, and the connecting plate 220 is used for connecting with the steel covering surface.

[0049] In order to prevent the leakage of nuclear radiation substances, the bottom of the valve body 200 is provided with the connecting plate 220, the structure of the connecting plate 220 is adapted to the steel covering surface, and the connecting plate 220 is used for recovering the steel covering surface.

[0050] Further, a connecting port 240 is arranged between the valve body 200 and the sleeve assembly, and a temperature sensing member is attached in the connecting port 240.

[0051] The valve body 200 is welded with the pipe assembly through the connecting port 240, and before welding with the pipe assembly, each end (pipe, valve) is cleaned with white lint dipped with alcohol; during welding, the welding procedure is followed, and the welding is performed with inert gas protection, and meanwhile: the grounding end of the welding machine should be connected to the pipe instead of the valve, so as to avoid the electric arc generated on the non-anode contact surface by the accidental current; during the welding process, attention should be paid to avoid the generation of thermal stress to affect the inner and outer sealing; before welding, the temperature test paper and other temperature sensing members are attached at the pipe root of the valve body, so as to detect the temperature change during welding, and when the temperature of the test paper is higher than 120℃, the welding should be stopped; during the welding process, attention should be paid to adopt appropriate cooling measures, and the welding temperature should be controlled and the valve should be in the closed state; after welding, the welding seam is cleaned and detected by the approved method; after the pipe welding is completed and accepted, the valve cavity and the pipe are cleaned by using low-pressure blowing or other appropriate methods, so as to prevent the welding slag, sundries from blocking or scratching the valve sealing surface.

[0052] Further, the welding part 230 is arranged on the periphery of the valve body 200.

[0053] The welding part 230 is used for welding the valve body 200 with the inner wall of the lifting point frame 300.

[0054] Further, the connecting part is installed in the mounting hole.

[0055] During the operation of the ground penetrating valve, the connecting part is installed in the mounting hole, and through the pouring of concrete, the radiation protection effect can be achieved, and the operator can control the valve body 200 only by operating the operating part.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A mounting method for a ground penetrating valve, comprising a mounting platform (100), a plurality of valve bodies (200), a lifting point frame (300), a sleeve assembly and a bottom pipe, the plurality of valve bodies (200) and the lifting point frame (300) are mounted on the mounting platform (100), and the lifting point frame (300) is used for supporting the valve bodies (200); the valve body (200) comprises a connecting part and an operating part, and a sleeve assembly is communicated between the connecting part and the operating part, characterized in that: It comprises the following steps: ​ S1: laying a steel facing in the installation platform (100), and the steel facing reserving a plurality of installation holes for installation of the valve body (200); S2: pouring a reverse formwork layer on the steel facing, and measuring and marking the installation position of the valve body (200); S3: taking the crossbeam of the reverse formwork layer as a base point, hoisting the valve body (200) into the hoisting point area, and erecting a hoisting point frame (300) according to the position of the valve body (200); S4: connecting the valve body (200) with the installation platform (100), and pouring concrete into the installation platform (100); S5: connecting the bottom of the valve body (200) with the bottom pipeline; S6: testing the opening and closing smoothness of the valve body (200) after pouring concrete.

2. The mounting method for a through-valve according to claim 1, characterized in that, The perpendicularity between the valve body (200) and the installation platform (100) is less than 1 / 1000 mm.

3. The method of installing a through-wall valve of claim 1, wherein, The angle between the valve body (200) and the reverse formwork layer is less than 1°.

4. The method of installing a through-wall valve of claim 1, wherein, The valve body (200) is provided with a connecting flange, and the connecting flange is detachably connected with a connecting piece.

5. The method of installing a through-wall valve according to claim 4, wherein, It also comprises a hoisting piece (400) connected with the connecting flange through the connecting piece, and the hoisting piece (400) is used for moving the valve body (200).

6. The method of installing a through-wall valve of claim 1, wherein, The side wall of the valve body (200) is provided with an anchor bar (210) for welding between the valve body (200) and the inner wall of the installation hole.

7. The method of mounting for a cross valve according to claim 6, wherein The bottom of the valve body (200) is also provided with a connecting plate (220) for connecting with the steel facing.

8. The method of mounting for a cross valve according to claim 7, wherein The valve body (200) and the sleeve assembly are provided with a connecting port (240), and a temperature sensing test piece is pasted in the connecting port (240).

9. The method of installing a through-wall valve of claim 7, wherein, The valve body (200) is provided with a welding part (230) on the side.

10. The method of installing a through-wall valve of claim 1, wherein, The connecting part is installed in the installation hole.

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