On-line welding slag preventing tool for safety valve seat

Abstract

The online welding slag preventing tool for the safety valve seat comprises a collecting assembly and a supporting rod assembly, the collecting assembly comprises a framework and fireproof cloth, the framework has an opening state and a folding state, the fireproof cloth is arranged on the framework, and the fireproof cloth comprises collecting fireproof cloth and interval fireproof cloth. When the framework is in an open state, the collecting fireproof cloth forms a collecting area at the bottom, and the space fireproof cloth divides the upper portion of the collecting area into a plurality of independent areas. The supporting rod set comprises a main rod piece and a driving rod piece, the driving rod piece is connected to the main rod piece, the framework is connected between the main rod piece and the driving rod piece, and the framework is driven by the driving rod piece to be switched between the opening state and the folding state. Welding slag is prevented from splashing to the periphery of the valve seat through the interval fireproof cloth, the welding slag is collected through the collecting fireproof cloth, and therefore the welding slag is prevented from entering a pipeline, and the tool is integrally simple in structure and convenient and fast to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve processing, and relates to an on-line welding anti-welding slag tooling for a safety valve seat. Background Art

[0002] At present, most main steam safety valves and pipelines are connected by welding. As Figure 1 shown, this connection method can ensure the sealing performance at the inlet and outlet of the pipeline. However, when the seat of the main steam safety valve is damaged and the damage cannot be repaired by grinding, the entire valve seat needs to be replaced. Since the valve seat and the valve body are generally also connected by welding, as Figure 2 shown, there are the following two treatment schemes at present:

[0003] Scheme One: Cut the main steam safety valve from the pipeline and replace it offline. During this process, hoisting is required, and the valve is easily damaged during hoisting. Moreover, after replacement, it needs to be re-welded with the pipeline.

[0004] Scheme Two: Directly adopt an on-line method, that is, the main steam safety valve does not need to be cut from the pipeline. Only the valve seat needs to be cut from the valve body, and the newly processed valve seat is reinstalled and welded.

[0005] Although the above two schemes can solve the problem, Scheme One takes a long time and is cumbersome to operate. While Scheme Two avoids the damage caused by the valve being hoisted back and forth and the problem of re-welding the inlet and outlet. However, during the implementation of Scheme Two, welding slag is extremely likely to be generated, and the welding slag entering the safety valve will affect the sealing performance of the valve. Therefore, it is necessary to prevent the welding slag from entering during the welding process. Summary of the Invention

[0006] The purpose of the utility model is to provide an on-line welding anti-welding slag tooling for a safety valve seat.

[0007] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0008] An on-line welding anti-welding slag tooling for a safety valve seat, comprising:

[0009] A collection assembly: The collection assembly includes a framework and a fireproof cloth. The framework has an open state and a retracted state. The fireproof cloth is arranged on the framework. The fireproof cloth includes a collection fireproof cloth and a spaced fireproof cloth. When the framework is in the open state: The collection fireproof cloth forms a collection area at the bottom, and the spaced fireproof cloth divides the area above the collection area into multiple independent areas;

[0010] Support rod assembly: The support rod group includes a main rod and a driving rod. The driving rod is connected to the main rod, and the framework is connected between the main rod and the driving rod. The driving rod drives the framework to switch between the open state and the retracted state.

[0011] Preferably, in the above technical solution, the framework includes a plurality of lower support rods and a plurality of upper support rods. One end of each lower support rod is rotatably connected to the main rod, one end of each upper support rod is rotatably connected to the driving rod, and the other end of each upper support rod is rotatably and slidably connected to the corresponding lower support rod.

[0012] Further preferably, the plurality of lower support rods and upper support rods are evenly distributed to enhance the stability of the opening and retraction of the framework.

[0013] Further preferably, the four sides of the collecting fireproof cloth are connected to the other ends of the plurality of lower support rods. When the framework is in the open state, the middle part of the collecting fireproof cloth bulges downward compared with the four sides, facilitating the collection of welding slag in the middle of the collecting fireproof cloth.

[0014] Further preferably, the spaced fireproof cloth is connected between the lower support rods and the upper support rods.

[0015] Further preferably, a slider is provided on the lower support rod, and the slider can slide along the length direction of the lower support block. The other end of the upper support rod is rotatably connected to the slider.

[0016] Preferably, in the above technical solution, the driving rod includes a first sleeve and a locking member. The first sleeve is sleeved on the main rod and can move relative to the main rod in its length direction. The locking member is provided on the main rod for locking the relative movement of the first sleeve and the main rod.

[0017] Further preferably, the driving rod further includes a second sleeve. The second sleeve is sleeved on the first sleeve, and one end of the upper support rod is rotatably connected to the second sleeve.

[0018] Even more preferably, a base is connected to one end of the main rod, and one end of the lower support rod is rotatably connected to the base.

[0019] Still further preferably, the fireproof cloth further includes a cylindrical fireproof cloth. The cylindrical fireproof cloth is sleeved on the main rod, and both ends of the cylindrical fireproof cloth are respectively connected to the second sleeve and the base.

[0020] Further preferably, the spaced fireproof cloth is triangular, and three sides of the triangular spaced fireproof cloth are respectively connected to the lower support rod, the upper support rod and the cylindrical fireproof cloth.

[0021] In the above technical solution preferably, when the framework is in the open state, a plurality of the lower support rods are located on the same plane, which can maximize the collection area of the fireproof cloth.

[0022] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0023] The utility model prevents welding slag from splashing around the valve seat through the spaced fireproof cloth, and collects the welding slag through the collecting fireproof cloth, thereby avoiding the welding slag from entering the pipeline. The overall structure of the tooling is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attached Figure 1 is a schematic connection diagram of the main steam safety valve and the pipeline;

[0025] Attached Figure 2 is a schematic welding diagram of the valve seat and the valve body in the main steam safety valve;

[0026] Attached Figure 3 is a front sectional schematic view of the utility model;

[0027] Attached Figure 4 is a top view schematic diagram of the utility model;

[0028] Attached Figure 5 is a schematic diagram of the collection assembly of the utility model;

[0029] Attached Figure 6 is a schematic diagram of the framework of the utility model in the retracted state;

[0030] Attached Figure 7 is a schematic diagram of the framework of the utility model in the open state.

[0031] In the above drawings:

[0032] 10, main rod; 100, base; 110, first sleeve; 111, second sleeve; 112, locking member;

[0033] 200, lower support rod; 201, upper support rod; 202, slider; 210, collecting fireproof cloth; 211, spaced fireproof cloth; 212, cylindrical fireproof cloth; 22, collecting area; 220, independent area;

[0034] 3, safety valve; 30, valve body; 31, valve seat; 32, welding position;

[0035] 4, pipeline. Detailed implementation mode

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] As Figure 3 、 4 shown, an on-line welding anti-welding slag tooling for a safety valve seat includes a support rod assembly and a collection assembly, which will be specifically described in detail below.

[0039] As Figure 3 、 Figure 4 shown: The support rod group includes a main rod 10 and a driving rod, and the driving rod is connected to the main rod 10.

[0040] Specifically:[[]]END]]

[0041] One end of the main rod 10 is connected with a base 100, and the base 100 can be screwed onto the end of the main rod 1 by threads.

[0042] The driving rod includes a first sleeve 110, a second sleeve 111 and a locking member 112. Among them: The first sleeve 110 is sleeved on the main rod 10 and can move relative to the main rod 10 in its length direction; The second sleeve 111 is sleeved on the first sleeve 110. In this embodiment: The second sleeve 111 is screwed onto one end of the first sleeve 110 close to the base 100 by threads; The locking member 112 is arranged on the main rod 10 for locking the relative movement of the first sleeve 110 and the main rod 10. In this embodiment: The locking member 112 is a nut rotated on the end of the main rod 10 away from the base 100. When the first sleeve 110 moves to abut against the locking member 112, the two can no longer move relative to each other.

[0043] As Figures 3 - 5 shown: The collection assembly includes a skeleton and a fireproof cloth. Specifically:[[]]END]]

[0044] The framework is connected between the main rod 10 and the driving rod, and the driving rod can drive the framework to open or retract. In this embodiment: The framework includes a plurality of lower support rods 200 and a plurality of upper support rods 201. One end of the lower support rod 200 is rotatably connected to the base 100 on the main rod 10; One end of the upper support rod 201 is rotatably connected to the second sleeve 111 of the driving rod, and the other end of the upper support rod 201 is rotatably and slidably connected to the lower support rod 200. In the figure: A slider 202 is provided on the lower support rod 201, and the slider 202 can slide along the length direction of the lower support block 200, and the other end of the upper support rod 201 is rotatably connected to the slider 202. Each lower support rod 200 corresponds to an upper support rod 201, and the plurality of lower support rods 200 and upper support rods 201 are evenly distributed to increase the stability of the opening and retraction of the framework.

[0045] The fireproof cloth is arranged on the framework. The fireproof cloth includes a collecting fireproof cloth 210, a spaced fireproof cloth 211, and a columnar fireproof cloth 212. Among them: The four sides of the collecting fireproof cloth 210 are connected to the other ends of the plurality of lower support rods 200, and when the framework is in the open state, the collecting fireproof cloth 210 forms a collecting area 22 at the bottom. In this embodiment: The middle part of the collecting fireproof cloth 210 bulges downward compared with the surrounding, which is convenient for collecting welding slag in the middle part of the collecting fireproof cloth 210; The spaced fireproof cloth 211 is connected between the lower support rod 200 and the upper support rod 201. When the framework is in the open state: The spaced fireproof cloth 211 divides the area above the collecting area 22 into a plurality of independent areas 220, which can prevent welding slag from splashing to the periphery of the valve seat cavity during welding; The columnar fireproof cloth 212 is sleeved on the main rod 10, and the two ends of the columnar fireproof cloth 212 are respectively connected to the second sleeve 111 and the base 100, which can prevent welding slag from splashing to the main rod 10 during welding.

[0046] In a preferred embodiment of this embodiment: The spaced fireproof cloth 211 is triangular, and the three sides of the triangular spaced fireproof cloth 211 are respectively connected to the lower support rod 200, the upper support rod 201, and the columnar fireproof cloth 212. Each independent area 220 can block the welding slag at the corresponding position during welding and finally fall into the collecting area 22 of the collecting fireproof cloth 210.

[0047] The following specifically elaborates on the usage process of this embodiment:

[0048] The "up" and "down" referred to below are taken as the up and down in Figure 3 as an example.

[0049] Move the first sleeve 110 upward, and the upper support rod 201 slides to pull the lower support rod 200 closer to the main rod 10 to retract the framework, and then insert the tooling into the inside of the valve body 30 so that the collecting assembly is located below the welding position 32, as Figure 6 shown;

[0050] Move the first sleeve 110 downward. The upper support rod 201 slides to push the lower support rod 200, so that the lower support rod 200 expands, and the fireproof cloth collecting cloth 210 connected to the lower support rod 200 opens. A plurality of lower support rods 200 can be expanded to the horizontal to maximize the collection area of the fireproof cloth collecting cloth 210. At this time, make the locking member 112 abut against the upper end of the first sleeve 110. Fixing the first sleeve 110 can keep the main rod 10 and the first sleeve 110 relatively fixed, as Figure 7 shown.

[0051] Weld the valve body 30 and the valve seat 31. The welding slag generated by welding is blocked by the spaced fireproof cloth 211 and the cylindrical fireproof cloth 212 and falls into the fireproof cloth collecting cloth 210 for collection; after the welding is completed, move the first sleeve 110 upward, and the upper support rod 201 slides to pull the lower support rod 200 closer to the main rod 10 to retract the skeleton, and the welding slag is collected in the fireproof cloth collecting cloth 210, and then the tooling can be taken out.

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An on-line welding anti-welding slag tooling for a safety valve seat, characterized in that: Comprising: Collection component: The collection component includes a framework and a fireproof cloth. The framework has an open state and a retracted state. The fireproof cloth is arranged on the framework. The fireproof cloth includes a collection fireproof cloth and a spaced fireproof cloth. When the framework is in the open state: The collection fireproof cloth forms a collection area at the bottom, and the spaced fireproof cloth divides the area above the collection area into multiple independent areas; Support rod component: The support rod group includes a main rod and a driving rod. The driving rod is connected to the main rod. The framework is connected between the main rod and the driving rod. The driving rod drives the framework to switch between the open state and the retracted state.

2. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 1, characterized in that: The framework includes a plurality of lower support rods and a plurality of upper support rods. One end of each lower support rod is rotatably connected to the main rod. One end of each upper support rod is rotatably connected to the driving rod. The other end of each upper support rod is rotatably and slidably connected to the lower support rod. Each lower support rod corresponds to one upper support rod; The plurality of lower support rods and upper support rods are evenly distributed.

3. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 2, characterized in that: The four sides of the collection fireproof cloth are connected to the other ends of the plurality of lower support rods. When the framework is in the open state, the middle of the collection fireproof cloth bulges downward compared with the four sides; The spaced fireproof cloth is connected between the lower support rods and the upper support rods.

4. The online welding anti-welding slag tooling for the safety valve seat according to claim 2, characterized in that: Sliders are arranged on the lower support rods. The sliders can slide along the length direction of the lower support rods. The other ends of the upper support rods are rotatably connected to the sliders.

5. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 2, wherein: The driving rod includes a first sleeve and a locking member. The first sleeve is sleeved on the main rod and can move relative to the main rod in its length direction. The locking member is arranged on the main rod for locking the relative movement of the first sleeve and the main rod.

6. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 5, characterized in that: The driving rod further includes a second sleeve. The second sleeve is sleeved on the first sleeve. One end of the upper support rod is rotatably connected to the second sleeve.

7. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 6, characterized in that: One end of the main rod is connected with a base. One end of the lower support rod is rotatably connected to the base.

8. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 7, characterized in that: The fireproof cloth further includes a cylindrical fireproof cloth. The cylindrical fireproof cloth is sleeved on the main rod. And the two ends of the cylindrical fireproof cloth are respectively connected to the second sleeve and the base.

9. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 8, characterized in that: The spaced fireproof cloth is triangular. The three sides of the triangular spaced fireproof cloth are respectively connected to the lower support rod, the upper support rod and the cylindrical fireproof cloth.

10. The on-line welding anti-welding slag tooling for the safety valve seat according to claim 2, characterized in that: When the framework is in the open state, the plurality of lower support rods are located in the same plane.

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