CN114184337A - Nuclear power station butt clamp butterfly valve instrument of suppressing on spot and system of suppressing - Google Patents
Nuclear power station butt clamp butterfly valve instrument of suppressing on spot and system of suppressing Download PDFInfo
- Publication number
- CN114184337A CN114184337A CN202010961066.2A CN202010961066A CN114184337A CN 114184337 A CN114184337 A CN 114184337A CN 202010961066 A CN202010961066 A CN 202010961066A CN 114184337 A CN114184337 A CN 114184337A
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- Prior art keywords
- side flange
- nuclear power
- butterfly valve
- pressurizing
- butt
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- 238000003825 pressing Methods 0.000 claims abstract description 67
- 230000000903 blocking effect Effects 0.000 claims description 38
- 238000011065 in-situ storage Methods 0.000 claims description 16
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
- G01M3/2869—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals for seals not incorporated in a pipe joint
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/086—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to an in-place pressing tool and a pressing system for a nuclear power station butt-clamp butterfly valve, which are used for in-place pressing of the nuclear power station butt-clamp butterfly valve. Compared with the prior art, the tool for pressing the butt clamp butterfly valve in place of the nuclear power station can be used for conveniently and efficiently pressing in place, and is convenient and easy to carry.
Description
Technical Field
The invention belongs to a valve maintenance device, and particularly relates to a tool and a system for locally pressing a butt-clamp butterfly valve of a nuclear power station.
Background
The precise treatment system for the condensed water of the nuclear power station and the gas system are provided with a plurality of butterfly valves, the connection form of the butterfly valves is flange butt clamp type, the sealing principle of the valves is that the clamping bolt tightening force is applied to a valve seat pressing plate to form sealing force on a valve seat and a butterfly plate, and the sealing effect is realized. In the process of disassembly and maintenance, the existing maintenance mode is to transport the valve back from the field and press the valve through the general pressing table of the valve, and the maintenance mode has the following defects: 1. the valve is limited by the size of the pressing table, and only a small-caliber valve can be pressed; 2. pressing is very inconvenient, and if the sealing is soft, the sealing surface of the flange and the valve seat are easy to damage; 3. the large-diameter valve is inconvenient to transport, and the risk of damaging equipment and personnel exists.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a safe, reliable and efficient on-site pressurizing tool and system for a butt-clamped butterfly valve of a nuclear power station.
The purpose of the invention can be realized by the following technical scheme:
the invention provides a nuclear power station butt clamp butterfly valve in-situ pressurizing tool, which is used for pressurizing a nuclear power station butt clamp butterfly valve in situ, and comprises a blocking plate side flange plate and an emptying side flange ring.
Furthermore, the sizes of the flange plate on the plugging plate side and the flange ring on the emptying side are adaptive to the calibers of the butt-clamping butterfly valves of the nuclear power station, and a plurality of sets of the flange plates can be designed according to the calibers of different valves and are used for butterfly valves with different calibers. The flange plate at the side of the plugging plate and the flange ring at the side of the emptying plate are combined into a set of tool, the flange plate at the side of the plugging plate is similar to a blind plate, but the middle of the flange plate is provided with a joint threaded hole.
Furthermore, the blocking plate side flange plate and the emptying side flange ring are both made of stainless steel plates.
Further, the joint threaded hole is an R1/2 taper pipe thread.
Preferably, the joint screw hole of the flange plate at the side of the blocking plate is set to be a uniform interface, so that a manual pressurizing pump is convenient to install, and the pressurizing pressure value can be controlled at any time.
Furthermore, the blocking plate side flange plate and the emptying side flange ring are divided into DN300, DN350, DN400, DN500, DN600 and DN750, so that the pressing is convenient.
The invention also provides a nuclear power station butt-clamping butterfly valve in-situ pressurizing system which is used for pressurizing the nuclear power station butt-clamping butterfly valve in situ and comprises a pressurizing tool, a double-end external thread connector, a pressurizing pipeline and a pressurizing pump, wherein the pressurizing tool comprises a blocking plate side flange plate and an emptying side flange ring, the blocking plate side flange plate and the emptying side flange ring are connected to two ends of the nuclear power station butt-clamping butterfly valve to be tested through bolts, the blocking plate side flange plate and the emptying side flange ring clamp the nuclear power station butt-clamping butterfly valve in the middle, one end of the double-end external thread connector is connected with a connector threaded hole in the middle of the blocking plate side flange plate, the other end of the double-end external thread connector is connected with one end of the pressurizing pipeline, the other end of the pressurizing pipeline is connected with the pressurizing pump, and the pressurizing pipeline is provided with a pressure gauge and a needle valve;
the use method of the system comprises the following steps: and opening the needle valve, after the pressurizing pump is started, observing the reading of the pressure gauge and the leakage condition of each joint flange, timely processing leakage, closing the needle valve for pressure maintaining after the reading of the pressure gauge meets the requirement, observing the pressure drop and the outlet water seepage condition, and judging whether the butt-clamped butterfly valve of the nuclear power station to be detected is qualified.
The invention also provides another on-site pressurizing system for the butt-clamped butterfly valve of the nuclear power station, which is used for on-site pressurizing the butt-clamped butterfly valve of the nuclear power station, and comprises a pressurizing tool, a double-end external thread joint, a pressurizing pipeline and a compressor, wherein the pressurizing tool comprises a blocking plate side flange and an emptying side flange ring, the blocking plate side flange and the emptying side flange ring are connected to two ends of the butt-clamped butterfly valve of the nuclear power station to be tested through bolts, the blocking plate side flange and the emptying side flange ring clamp the butt-clamped butterfly valve of the nuclear power station in the middle, one end of the double-end external thread joint is connected with a joint threaded hole in the middle of the blocking plate side flange, the other end of the double-end external thread joint is connected with one end of the pressurizing pipeline, the other end of the pressurizing pipeline is connected with the compressor, and the pressurizing pipeline is provided with a pressure gauge and a needle valve;
the use method of the system comprises the following steps: the needle valve is opened, after the compressor is started, pressure is maintained after pressure is reached by observing the reading of the pressure gauge, after the flange seal is checked to be qualified, water is poured into one end of the flange ring on the connecting and exhausting side of the butt clamp butterfly valve of the nuclear power station to be tested to read the quantity of bubbles, and whether the butt clamp butterfly valve of the nuclear power station to be tested is qualified or not is judged.
The difference between the above uses of the compressor or the pressurizing pump is that the pressurizing pump or the pressurizing air is selected based on the difference of the two media.
For the on-site pressing system of the butt-clamp butterfly valve of the nuclear power plant, preferably, the double-end outer thread connector is wound with the thread seal tape and then is vertically screwed and connected with the connector threaded hole or the pressing pipeline.
For the butterfly valve clamping in-situ pressurizing system of the nuclear power plant, a hose is preferably adopted as the pressurizing pipeline.
For the butterfly valve clamping in-situ pressurizing system of the nuclear power plant, the pressurizing pump is preferably a manual pressurizing pump.
The tool for pressing the butterfly valve in place of the nuclear power station can be used for conveniently and efficiently pressing in place, and is convenient and easy to carry.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the connector screw hole of the flange plate on the side of the plugging plate is set to be a uniform interface, so that a manual pressurizing pump is convenient to install, and the pressurizing pressure value can be controlled at any time.
2. The pressing tool disclosed by the invention can select a proper butt clamp flange according to the size of the butterfly valve to be pressed on site, and has high usability.
3. The pressing tool is convenient to carry, and avoids risks easily caused in the transportation of large valves.
4. The pressing tool can fasten and seal the valve which is sealed by the pressing force of the flange valve seat of the on-site partial valve, and realizes the effectiveness and the practicability of pressing.
5. According to the pressing tool, the processing material is selected from carbon steel, the pressing tool can bear pressure, the safety production regulation is met, and the overhauling quality is ensured.
6. The pressing tool is divided into a plugging plate side, an emptying side, a replaceable pressing connector, a pressing hose and a manual pressing pump, and is convenient to assemble and correspond to butterfly valves with various calibers.
7. The flange plate at the side of the blocking plate and the flange ring at the emptying side are divided into DN300, DN350, DN400, DN500, DN600 and DN750, so that the pressing is convenient.
8. Preferably, a manual pressurizing pump is used, the connecting pressurizing tool can be used in various places, a power supply is not needed, and the use is convenient.
Drawings
FIG. 1 is a schematic structural view of a pressing tool for a butterfly valve of a nuclear power plant in place in embodiment 1;
FIG. 2 is a schematic structural diagram of a pressing system of a cartridge butterfly valve in situ of the nuclear power plant in embodiment 1;
fig. 3 is a schematic structural view of a pressing system of a cartridge butterfly valve in situ in a nuclear power plant in embodiment 2.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
Referring to fig. 1, this embodiment provides a nuclear power station is to pressing instrument on spot for pressing the nuclear power station is to pressing the butterfly valve on spot, the pressing instrument includes stifled board side ring flange 1 and evacuation side ring flange 2, and during the use, stifled board side ring flange 1 and evacuation side ring flange 2 press from both sides the butterfly valve tightly in the centre with the nuclear power station, stifled board side ring flange 1 is the disc structure, and the bolt hole that is used for connecting the nuclear power station is seted up to the outer lane, and the centre is seted up and is used for the joint screw hole 11 of external double-end mantle fiber joint, evacuation side ring flange 2 is the ring structure, sets up the bolt hole that is used for connecting the nuclear power station is to pressing from both sides the butterfly valve on it.
In this embodiment, the size of the blocking plate side flange 1 and the emptying side flange ring 2 is adapted to the aperture of the butterfly valve clamped in the nuclear power plant, and a plurality of sets of the blocking plate side flange 1 and the emptying side flange ring 2 can be designed according to the apertures of different valves, for example, the blocking plate side flange 1 and the emptying side flange ring 2 are divided into DN300, DN350, DN400, DN500, DN600, and DN750 for the butterfly valves with different apertures.
The flange plate 1 on the side of the plugging plate and the flange ring 2 on the side of the emptying plate are combined into a set of tool, the flange plate 1 on the side of the plugging plate is similar to a blind plate, but the middle part of the flange plate is provided with a joint threaded hole 11.
In this embodiment, the blocking plate side flange 1 and the evacuation side flange ring 2 are both made of stainless steel plates.
In the embodiment, the joint threaded hole 11 is an R1/2 taper pipe thread. Preferably, the joint screw hole of the flange plate at the side of the blocking plate is set to be a uniform interface, so that a manual pressurizing pump is convenient to install, and the pressurizing pressure value can be controlled at any time.
Referring to fig. 2, the embodiment further provides a system for locally pressing the butt-clamped butterfly valve of the nuclear power plant, which is used for locally pressing the butt-clamped butterfly valve of the nuclear power plant, and the system for pressing includes a pressing tool, a double-end external thread connector 3, a pressing pipeline 4 and a pressing pump 5, wherein the pressing tool includes a blocking plate side flange 1 and an evacuation side flange ring 2, the blocking plate side flange 1 and the evacuation side flange ring 2 are connected to two ends of the butt-clamped butterfly valve 7 of the nuclear power plant to be detected through bolts, the blocking plate side flange 1 and the evacuation side flange ring 2 clamp the butt-clamped butterfly valve of the nuclear power plant in the middle, one end of the double-end external thread connector 3 is connected with a connector threaded hole 11 in the middle of the blocking plate side flange 1, the other end of the double-end external thread connector is connected with one end of the pressing pipeline 4, the other end of the pressing pipeline 4 is connected with the pressing pipeline 5, and the pressing pipeline 4 is provided with a pressure gauge 41 and a needle valve 42;
the use method of the system comprises the following steps: and (3) opening the needle valve 42, after the pressurizing pump 5 is started, observing the reading of the pressure gauge 41 and the leakage condition of each joint flange, timely processing leakage, closing the needle valve 42 for pressure maintaining after the reading of the pressure gauge 41 meets the requirement, observing the pressure drop and the outlet water seepage condition, and judging whether the butt-clamped butterfly valve 7 of the nuclear power station to be detected is qualified.
Preferably, the double-end outer thread connector 3 is tightly screwed with the connector threaded hole 11 or the pressing pipeline 4 after being wound with the thread tape.
Preferably, the pressing pipe 4 is a hose.
Preferably, the pressurizing pump 5 is a manual pressurizing pump.
The on-site pressing system for the butterfly valve of the nuclear power station provided by the embodiment is used for performing on-site pressing test on the large-diameter butterfly valve in the system during the CPS system centralized preventive disassembly inspection of the No. 1 machine of the Shandong Haiyang nuclear power station, has reliability, safety and convenience, and greatly saves the construction period.
Example 2
The difference from the embodiment 1 is that the embodiment provides another in-situ pressurizing system for the butterfly valve of the nuclear power plant, the pressing system is used for pressing the butt-clamp butterfly valve of the nuclear power station in situ, and comprises a pressing tool, a double-end external thread connector 3, a pressing pipeline 4 and a compressor 6, wherein the pressing tool comprises a plugging plate side flange plate 1 and an emptying side flange ring 2, the flange plate 1 at the side of the blocking plate and the flange ring 2 at the side of the emptying side are connected with the two ends of the butt-clamping butterfly valve 7 of the nuclear power station to be tested through bolts, the flange plate 1 at the side of the blocking plate and the flange ring 2 at the side of the emptying side clamp the butt-clamping butterfly valve of the nuclear power station in the middle, one end of the double-end external thread connector 3 is connected with a connector threaded hole 11 in the middle of the flange plate 1 at the side of the blocking plate, the other end is connected with one end of the pressurizing pipeline 4, the other end of the pressurizing pipeline 4 is connected with a compressor 6, and a pressure gauge 41 and a needle valve 42 are installed on the pressurizing pipeline 4;
the use method of the system comprises the following steps: the needle valve 42 is opened, after the compressor 6 is started, the reading of the pressure gauge 41 is observed, the pressure is maintained after the pressure is reached, after the flange seal is checked to be qualified, water is poured into one end of the flange ring 2 on the connecting and exhausting side of the butt clamp butterfly valve 7 of the nuclear power station to be tested to read the quantity of bubbles, and whether the butt clamp butterfly valve 7 of the nuclear power station to be tested is qualified or not is judged.
Preferably, the double-end outer thread connector 3 is tightly screwed with the connector threaded hole 11 or the pressing pipeline 4 after being wound with the thread tape.
Preferably, the pressing pipe 4 is a hose.
The on-site pressing system for the butterfly valve of the nuclear power station provided by the embodiment is used for performing on-site pressing test on the large-diameter butterfly valve in the system during the CPS system centralized preventive disassembly inspection of the No. 1 machine of the Shandong Haiyang nuclear power station, has reliability, safety and convenience, and greatly saves the construction period.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. A nuclear power station butt clamp butterfly valve in-situ pressurizing tool is characterized by being used for pressurizing a nuclear power station butt clamp butterfly valve in situ, the pressurizing tool comprises a blocking plate side flange plate (1) and an emptying side flange ring (2), when the pressurizing tool is used, the blocking plate side flange plate (1) and the emptying side flange ring (2) clamp the nuclear power station butt clamp butterfly valve in the middle,
the blocking plate side flange plate (1) is of a disc-shaped structure, bolt holes used for connecting a nuclear power station butt-clamping butterfly valve are formed in the outer ring of the blocking plate side flange plate, a joint threaded hole (11) used for connecting an external double-end external screw joint is formed in the middle of the blocking plate side flange plate, the emptying side flange ring (2) is of a circular ring structure, and bolt holes used for connecting the nuclear power station butt-clamping butterfly valve are formed in the emptying side flange ring.
2. The in-situ pressing tool for the butt-clamp butterfly valve of the nuclear power plant as claimed in claim 1, wherein the size of the plug side flange plate (1) and the size of the emptying side flange ring (2) are matched with the caliber of the butt-clamp butterfly valve of the nuclear power plant.
3. The in-situ pressing tool for the butterfly valve clamped by the nuclear power plant as claimed in claim 1, wherein the plug side flange plate (1) and the emptying side flange ring (2) are both made of stainless steel plates.
4. The in-situ pressing tool for the butterfly valve clamped by the nuclear power plant as recited in claim 1, wherein the joint threaded hole (11) is an R1/2 taper pipe thread.
5. The in-situ pressing tool for the butterfly valve clamped by the nuclear power plant as recited in claim 1, wherein the plug side flange plate (1) and the emptying side flange ring (2) are divided into DN300, DN350, DN400, DN500, DN600 and DN 750.
6. The in-place pressurizing system for the butt-clamp butterfly valve of the nuclear power station is characterized by comprising a pressurizing tool, a double-end external thread connector (3), a pressurizing pipeline (4) and a pressurizing pump (5), wherein the pressurizing tool comprises a blocking plate side flange plate (1) and an emptying side flange ring (2), the blocking plate side flange plate (1) and the emptying side flange ring (2) are connected to two ends of the butt-clamp butterfly valve (7) of the nuclear power station to be tested through bolts, the blocking plate side flange plate (1) and the emptying side flange ring (2) clamp the butt-clamp butterfly valve of the nuclear power station in the middle, one end of the double-end external thread connector (3) is connected with a connector threaded hole (11) in the middle of the blocking plate side flange plate (1), the other end of the double-end external thread connector is connected with one end of the pressurizing pipeline (4), and the other end of the pressurizing pipeline (4) is connected with the pressurizing pump (5), and a pressure gauge (41) and a needle valve (42) are arranged on the pressurizing pipeline (4).
7. The in-place pressurizing system for the butt-clamp butterfly valve of the nuclear power station is characterized by comprising a pressurizing tool, a double-end outer wire connector (3), a pressurizing pipeline (4) and a compressor (6), wherein the pressurizing tool comprises a blocking plate side flange plate (1) and an emptying side flange ring (2), the blocking plate side flange plate (1) and the emptying side flange ring (2) are connected to two ends of the butt-clamp butterfly valve (7) of the nuclear power station to be tested through bolts, the blocking plate side flange plate (1) and the emptying side flange ring (2) clamp the butt-clamp butterfly valve of the nuclear power station in the middle, one end of the double-end outer wire connector (3) is connected with a connector threaded hole (11) in the middle of the blocking plate side flange plate (1), the other end of the double-end outer wire connector is connected with one end of the pressurizing pipeline (4), and the other end of the pressurizing pipeline (4) is connected with the compressor (6), and a pressure gauge (41) and a needle valve (42) are arranged on the pressurizing pipeline (4).
8. The in-place pressing system for the butt-clamp butterfly valve of the nuclear power plant as claimed in claim 6 or 7, wherein the double-end outer thread connector (3) is wound with a raw material tape and then is tightly screwed with the connector threaded hole (11) or the pressing pipeline (4).
9. The in-place pressing system for the butterfly valve clamped by the nuclear power plant as claimed in claim 6 or 7, wherein the pressing pipeline (4) adopts a hose.
10. The nuclear power plant butt clamp butterfly valve in-place pressurizing system as claimed in claim 6 or 7, wherein the pressurizing pump (5) is a manual pressurizing pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961066.2A CN114184337A (en) | 2020-09-14 | 2020-09-14 | Nuclear power station butt clamp butterfly valve instrument of suppressing on spot and system of suppressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961066.2A CN114184337A (en) | 2020-09-14 | 2020-09-14 | Nuclear power station butt clamp butterfly valve instrument of suppressing on spot and system of suppressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114184337A true CN114184337A (en) | 2022-03-15 |
Family
ID=80538991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010961066.2A Pending CN114184337A (en) | 2020-09-14 | 2020-09-14 | Nuclear power station butt clamp butterfly valve instrument of suppressing on spot and system of suppressing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114184337A (en) |
-
2020
- 2020-09-14 CN CN202010961066.2A patent/CN114184337A/en active Pending
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Application publication date: 20220315 |
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