CN220622757U

CN220622757U - Hydraulic test blocking valve

Info

Publication number: CN220622757U
Application number: CN202322281177.0U
Authority: CN
Inventors: 范留喜; 孙强; 张洁
Original assignee: NANTONG POWER STATION VALVE CO Ltd
Current assignee: NANTONG POWER STATION VALVE CO Ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-03-19
Anticipated expiration: 2033-08-24

Abstract

The utility model relates to the technical field of a plugging valve, in particular to a hydraulic test plugging valve, which comprises a valve body, a plugging plate, a support plate, a valve cover and a support plate, wherein the plugging plate, the support plate, the valve cover and the support plate are arranged in the valve body, a sealing assembly is arranged between the valve cover and the valve body, the sealing assembly comprises four open rings, the support plate is arranged above the four open rings and is connected with the valve cover through a fastener, the support plate is provided with a spigot limit, a mounting groove is formed in the valve body, the outer end of the four open rings is embedded in the mounting groove, the inner end of the four open rings is embedded in the spigot limit, the limited width of the spigot is greater than or equal to the annular width of the four open rings, and a lifting device is arranged on the valve cover. Through the spacing design of tang, need not to demolish the fastener, only need loosen the fastener and make the sealing washer no longer be in the pretension state after, push away four open loops to the tang spacing, make bearing plate, seal assembly, valve gap integrated an organic whole, wholly lift up through hoist device, quick assembly disassembly improves work efficiency.

Description

Hydraulic test blocking valve

Technical Field

The utility model relates to the technical field of a blocking valve, in particular to a hydraulic test blocking valve.

Background

The blocking valve is mainly applied to inlet and outlet of a superheater and a reheater of a boiler in a power plant and a chemical plant, and is used as a boiler hydrostatic test isolation device, and generally has two working states, namely a pressure test state and an operating state, after the pressure test state is finished, the internal blocking plate and other parts are required to be removed, the blocking valve is installed into a guide pipe to be used as a pipeline to restore the normal operating state, and when the pressure test state is carried out again, the guide pipe is taken out, and the blocking plate and other internal parts are reloaded to realize.

However, in the conventional design of the valve blocking structure, the supporting plate needs to be detached firstly in the process of disassembly and assembly, the sealing assembly is taken out, then the valve cover is removed, and then the test assemblies such as the blocking plate and the like are put in for pressure test or flow guide pipe operation, so that the overall disassembly and assembly time is long, and the working efficiency is low.

Disclosure of Invention

The utility model aims to provide a hydraulic test blocking valve, which can be assembled and disassembled through the limit design of a spigot on a supporting plate, and can push a four-open ring to the spigot limit after a fastener is only required to be loosened to enable a sealing ring not to be in a pre-tightening state any more, and then the fastener is screwed to enable the supporting plate, a sealing assembly and a valve cover to be integrated into a whole without single disassembly, and the blocking plate or a flow guide pipe is rapidly assembled and disassembled through the integral lifting of a lifting device, so that the working efficiency is improved.

In order to solve the technical problems, the utility model provides a hydraulic test blocking valve which comprises a valve body, a blocking plate, a support plate, a valve cover and a support plate, wherein the blocking plate, the support plate, the valve cover and the support plate are arranged in the valve body, a sealing assembly is arranged between the valve cover and the valve body, the sealing assembly comprises four open rings, the support plate is arranged above the four open rings and is connected with the valve cover through a fastener, a spigot is arranged on the support plate and is limited, a mounting groove is formed in the valve body, the outer end of the four open rings is embedded in the mounting groove, the inner end of the four open rings is embedded in the spigot, the limited width of the spigot is larger than or equal to the annular width of the four open rings, and a lifting device is arranged on the valve cover.

Further, the valve body is provided with a plurality of through holes, and the through holes are positioned at the outer sides of the four-opening rings.

Further, a plurality of threaded holes are formed in the four open loops, and the threaded holes are correspondingly formed in the through holes.

Further, the bottom surface of the four-way ring is higher than the upper surface of the valve cover.

Further, the sealing assembly further comprises a sealing ring and a pressing ring, the pressing ring is arranged above the sealing ring, and the four-opening ring is arranged above the pressing ring.

Further, a limiting step for limiting the four-opening ring is arranged in the valve body.

Further, the blocking plate and the supporting plate are oppositely arranged and are in butt joint through a plurality of first adjusting bolts, the first adjusting bolts are arranged in the middle of the supporting plate, second adjusting bolts are arranged at the upper end of the supporting plate, and the second adjusting bolts are arranged between the supporting plate and the blocking plate.

Further, the fastener comprises a plurality of studs and nuts, the lower end of each stud is in threaded connection with the supporting plate and the valve cover, and the upper end of each stud is locked through the nut.

Furthermore, a polish rod is arranged in the through hole.

Further, a bolt is arranged in the threaded hole.

The beneficial effects of the utility model are as follows:

1. according to the utility model, through the design of limiting the spigot on the supporting plate, when the sealing ring is dismounted, a fastener is not required to be dismounted, the four open rings are pushed to the spigot to be limited by a tool after the sealing ring is not in a pre-tightening state any more only by loosening the fastener, the nut is screwed down, the supporting plate, the sealing assembly and the valve cover are integrated into a whole, the honeycomb duct can be replaced without single dismounting, the whole lifting device is used for lifting, after the replacement is finished, the lifting integrated structure is put into the cavity of the valve body by the lifting device, the nut is loosened, the four open rings are pushed into the mounting groove by the tool, the outer end of the four open rings are attached to the inner wall of the mounting groove, the inner end of the four open rings are embedded in the spigot to be limited, and finally the nut is locked, so that all replacement work can be completed.

2. According to the utility model, through the design that the four open rings are provided with the threaded holes, the four open rings can be connected through the through holes by utilizing the bolts in the disassembly and assembly process without dismantling the fasteners, the four open rings are pushed inwards to the limit positions of the seam allowance on the support plate by utilizing the bolts after the sealing rings are no longer in the pre-tightening state by only loosening the fasteners, the support plate, the sealing assembly and the valve cover are integrated into a whole, the bolts are not required to be disassembled singly, and then the whole hoisting device is used for hoisting after the bolts are disassembled, so that the disassembly and assembly of the blocking plate or the flow guide pipe are rapidly completed, and the working efficiency is improved.

3. According to the utility model, through the design of the limiting step, when the structure integrating the fastener, the supporting plate, the sealing assembly and the valve cover is integrally put down through the lifting device, the four-opening ring cannot drop down, the four-opening ring can be connected with the four-opening ring through the through hole by utilizing the bolt in a threaded manner, the four-opening ring is pulled outwards, the outer end of the four-opening ring is embedded in the mounting groove and is attached to the mounting groove, the mounting between the four-opening ring and the valve body is completed, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a hydrostatic test block valve according to the present utility model in a pressure test mode;

FIG. 2 is a schematic illustration of the hydrostatic test plug valve of the present utility model during disassembly;

FIG. 3 is an enlarged view of portion A of FIG. 2;

in the figure: the valve comprises a valve body 1, a blocking plate 2, a supporting plate 3, a valve cover 4, a supporting plate 5, a connecting piece 6, a sealing ring 7, a pressing ring 8, a four-ring opening 9, a fastening piece 10, a lifting device 11, a through hole 12, a limiting step 13, a mounting groove 14, a spigot 51, a first 61-adjusting bolt 62, a second 91-threaded hole 101-stud 102-nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

The hydraulic test blocking valve comprises a valve body 1, a blocking plate 2, a support plate 3, a valve cover 4 and a support plate 5 which are arranged in the valve body 1, wherein a sealing assembly is arranged between the valve cover 4 and the valve body 1, the sealing assembly comprises a sealing ring 7, a pressing ring 8 and four-way rings 9 which are sequentially arranged from bottom to top, the support plate 5 is arranged above the four-way rings 9 and is connected with the valve cover 4 through a fastener 10, a spigot limit 51 is arranged on the support plate 5, a mounting groove 14 is formed in the valve body 1, the outer end of the four-way rings 9 is embedded in the mounting groove 14, the inner end is embedded in the spigot limit 51, the width of the spigot limit 51 is larger than or equal to the ring width of the four-way rings 9, the bottom surface of the four-way rings 9 is higher than the upper surface of the valve cover 4, a lifting device 11 is arranged on the valve cover 4, a plurality of through holes 12 are arranged on the valve body 1, and the through holes 12 are positioned on the outer side of the four-way rings 9; through the spacing design of tang on the bearing plate 5, can be when the dismouting, need not to demolish fastener 10, only need loosen fastener 10 and make sealing washer 7 no longer be in the pretension state after, utilize the instrument to push away quarter ring 9 to tang spacing 51, screw up nut 102 again, make bearing plate 5, quarter ring 9, clamping ring 8, sealing washer 7, valve gap 4 integrated an organic whole, need not singly demolish, through hoist device 11 whole hoist, quick assembly disassembly improves work efficiency.

Specifically, a limiting step 13 for limiting the four open loops 9 is arranged in the valve body 1; can be when fastener 10, bearing plate 5, quarto-ring 9, clamping ring 8, sealing washer 7 and valve gap 4 integrated integrative structure, when wholly placing the valve body cavity through hoist device 11, quarto-ring 9 can not fall down, improves the installation effectiveness between quarto-ring and the valve body.

Specifically, the blocking plate 2 and the support plate 3 are oppositely arranged and are abutted through a plurality of first adjusting bolts 61, the first adjusting bolts 61 are arranged in the middle of the support plate 3, the second adjusting bolts 62 are arranged at the upper end of the support plate 3, and the second adjusting bolts 62 are arranged between the support plate 3 and the blocking plate 2; the first adjusting bolt 61 can be screwed partially before being not installed in the valve body 1, the installation of the blocking plate 2 is not affected, then the second adjusting bolt 62 is screwed by a conventional wrench, and the end part of the first adjusting bolt 61 is propped against the blocking plate by utilizing the lever principle, so that the assembly is completed.

Specifically, the fastener 10 comprises a plurality of studs 101 and nuts 102, wherein the lower end of each stud 101 is in threaded connection with the support plate 5 and the valve cover 4, and the upper end is locked by the nuts 102; in this embodiment 1, a polish rod (not shown in the figure) is disposed in the through hole 12, when the plugging valve is to be replaced, the nut 102 is loosened, the sealing ring 7 is not required to be completely detached, the sealing ring 7 is no longer in a pre-tightening state, then the four-open ring 9 is pushed to the seam allowance limit 51 by a tool, the polish rod is removed, the nut 102 is screwed down, the supporting plate 5, the four-open ring 9, the compression ring 8, the sealing ring 7 and the valve cover 4 are integrated, the integrated structure is lifted by a lifting device, the honeycomb duct can be replaced, after the replacement is completed, the integrated structure is lifted by the lifting device and placed in the middle cavity of the valve body, the four-open ring 9 reaches the limit step 13 of the valve body 1, at this time, the nut 102 (2-4 circles) is loosened again, the four-open ring 9 is pushed into the mounting groove 14 of the valve body 1 by the tool, the four-open ring 9 is embedded between the supporting plate 5, the valve cover 4 and the valve body 1, and finally the nut 102 is locked, all the replacement work can be completed, when the operation state is adjusted to the test pressure state, the repeated steps can be completed, the operation state can be quickly removed and replaced, and the operation state can be quickly removed, and replaced, and the work efficiency is improved.

Example 2

As shown in fig. 1 to 3, unlike embodiment 1, a plurality of threaded holes 91 are provided in the quarter-turn ring 9, the threaded holes 91 are provided corresponding to the through holes 12, and bolts 100 are provided in the threaded holes 91.

The disassembly and assembly process of the utility model is as follows:

firstly, the fastening piece 10 is not required to be removed, the fastening piece 10 is only required to be loosened, after the sealing ring is not in a pre-tightening state, then the bolt 100 is pushed inwards to drive the four-open ring 9 to move to the spigot limit 51, thereby the supporting plate 5, the four-open ring 9, the compression ring 8, the sealing ring 7 and the valve cover 4 are integrated into a whole structure, the bolt 100 is removed, the whole structure is lifted by a lifting device, the guide pipe can be replaced, after replacement, the whole structure is lifted by the lifting device to be placed into a cavity of the valve body, the four-open ring 9 reaches the limit step 13 of the valve body 1, at the moment, the nut 102 (2-4 circles) is loosened, the four-open ring 9 is connected with the four-open ring 9 through the threads of the bolt 100, the four-open ring 9 is pulled outwards, the outer end of the four-open ring is embedded in the mounting groove 14, the inner side is embedded in the spigot limit 51, the whole structure is positioned between the supporting plate 5, the valve cover 4 and the valve body 1, and finally the nut 102 is locked, all replacement work can be completed, when the operation state is adjusted to be the test state, the repeated steps can be completed, the operation state can be quickly removed and replaced, the operation state can be changed, and the work efficiency of replacement can be improved.

In the present embodiment 1 and embodiment 2, the lifting device 11 includes a lifting ring.

The above disclosure is only illustrative of two preferred embodiments of the present utility model, and it is to be understood that the scope of the present utility model is not limited thereto, and equivalent changes may be made thereto while remaining within the scope of the present utility model as defined by the appended claims.

Claims

1. The utility model provides a hydrostatic test shutoff valve, includes valve body (1) and sets up closure plate (2), extension board (3), valve gap (4) and back plate (5) in valve body (1), its characterized in that, valve gap (4) with be equipped with seal assembly between valve body (1), seal assembly includes four open loop (9), back plate (5) set up four open loop (9) top and pass through fastener (10) and be connected with valve gap (4), be equipped with tang spacing (51) on back plate (5), mounting groove (14) have been seted up in valve body (1), the outer end of four open loop (9) is inlayed and is established in mounting groove (14), the inner is inlayed and is established in tang spacing (51), the width of tang spacing (51) is greater than or equal to the annular width of four open loop (9), be equipped with hoisting device (11) on valve gap (4).

2. The hydrostatic test plugging valve according to claim 1, wherein the valve body (1) is provided with a plurality of through holes (12), and the through holes (12) are positioned on the outer side of the four-way ring (9).

3. The hydrostatic test plugging valve according to claim 2, wherein the four-way ring (9) is provided with a plurality of threaded holes (91), and the threaded holes (91) are arranged corresponding to the through holes (12).

4. A hydrostatic test block valve according to claim 1, wherein the bottom surface of the four-way ring (9) is higher than the upper surface of the valve cap (4).

5. The hydrostatic test block valve of claim 1, wherein the seal assembly further comprises a seal ring (7) and a press ring (8), the press ring (8) is disposed above the seal ring (7), and the quarter ring (9) is disposed above the press ring (8).

6. The hydrostatic test plugging valve according to claim 1, wherein a limiting step (13) for limiting the four-way ring (9) is arranged in the valve body (1).

7. The hydraulic test plugging valve according to claim 1, wherein the plugging plate (2) and the support plate (3) are oppositely arranged and are abutted through a plurality of first adjusting bolts (61), the plurality of first adjusting bolts (61) are arranged in the middle of the support plate (3), a second adjusting bolt (62) is arranged at the upper end of the support plate (3), and the second adjusting bolts (62) are arranged between the support plate (3) and the plugging plate (2).

8. A hydrostatic test block valve according to claim 1, wherein the fastener (10) comprises a plurality of studs (101) and nuts (102), the lower end of each stud (101) being threadedly connected to the support plate (5) and the valve cover (4), the upper end being locked by the nuts (102).

9. A hydrostatic test block valve according to claim 2, wherein a polish rod is provided in the through bore (12).

10. A hydrostatic test block valve according to claim 3, wherein a bolt (100) is provided in the threaded bore (91).