CN109916574B - Flange sealing and detection simulation device for power station water system equipment - Google Patents

Flange sealing and detection simulation device for power station water system equipment Download PDF

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Publication number
CN109916574B
CN109916574B CN201910245802.1A CN201910245802A CN109916574B CN 109916574 B CN109916574 B CN 109916574B CN 201910245802 A CN201910245802 A CN 201910245802A CN 109916574 B CN109916574 B CN 109916574B
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flange
main pipeline
pipe
sealing
valve
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CN109916574A (en
Inventor
顾柏骁
崔冀
宋逸凡
孙旭
朱友学
孙传福
胡银龙
孙永平
姜华
黄磊
芮守龙
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Jiangsu Nuclear Power Corp
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Jiangsu Nuclear Power Corp
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Abstract

The invention belongs to the technical field of flange sealing, and particularly discloses a power station water system equipment flange sealing and detection simulation device, which comprises a bracket, a main pipeline, an injection/drainage valve, an injection/drainage pipe, an exhaust valve, an exhaust pipe, a pressure gauge and a flange, wherein the top of the bracket is provided with the main pipeline, and the two ends of the main pipeline are sealed through the flange; an exhaust pipe communicated with the inside of the main pipe is arranged at the top of one end of the main pipe, and an exhaust valve and a pressure gauge are arranged on the exhaust pipe; the bottom of one end of the main pipeline is provided with an injection/drainage pipe communicated with the inside of the main pipeline, and the injection/drainage pipe is provided with an injection/drainage valve; the two main pipelines are fixedly connected in a sealing way through a protruding surface flange; the outer end part of the right main pipeline is fixedly connected in a sealing way through a mortise flange; the outer end part of the left main pipeline is fixedly connected with the left main pipeline in a sealing way through a concave-convex flange. According to the device, flange sealing operation is carried out on the simulation device, the actual working content of the site is simulated, the device is pressed by matching with the pressing pump, and the sealing effect is detected.

Description

Flange sealing and detection simulation device for power station water system equipment
Technical Field
The invention belongs to the technical field of flange sealing, and particularly relates to a flange sealing and detection simulation device for power station water system equipment.
Background
In the overhaul of the water system equipment of the power station, a large number of flange sealing works are usually involved, and the flange structure forms of the flange sealing work relate to a protruding surface flange, a concave-convex flange and a mortise flange. The flange sealing belongs to a basic but very important process, the sealing effect is greatly influenced by the skill level of operators, and the notes of various forms of flanges in the assembly process are different.
The pressure of the water system of the power station is usually within 2.5Mpa, the number of the flanges is large, and in actual work on site, more leakage often occurs. The leakage reasons are usually improper operation caused by low skill level of personnel, such as insufficient gasket compression, non-advance flange seam allowance, flange fastening deflection, unqualified parallelism and the like.
Therefore, in order to improve the quality of the flange seal, a certain skill training of the operator is required. The traditional skill training is developed through text, pictures and case explanation, and personnel can only memorize and understand through the content of the paper explanation, so that the skill training is not visual and the training effect is poor. Meanwhile, the examination mode is limited to dictation or pen trials, and a better training examination and exercise platform is lacked. When trained personnel operate on site, the situations of poor practical operation capability, irregular and unskilled technical key operation and the like often occur, and the flange is easily unqualified in sealing, so that the flange is leaked.
Therefore, by means of some off-site device or equipment, the flange sealing operation in the simulation site is required to be performed by personnel, so that skill training and assessment work can be better carried out.
Disclosure of Invention
The invention aims to provide a flange sealing and detecting simulation device for power station water system equipment, which simulates the actual working content of a site by performing flange sealing operation on a simulation device, and is matched with a pressurizing pump to press the device, so that the sealing effect is detected, and errors and defects in operation are found in time.
The technical scheme for realizing the purpose of the invention comprises the following steps: the utility model provides a power station water system equipment flange seals and detects analogue means, this analogue means includes support, trunk line, annotate/drain valve, annotate/drain pipe, discharge valve, blast pipe, manometer and flange, and the support top is equipped with the trunk line, and the trunk line both ends are sealed through flange seal; an exhaust pipe communicated with the inside of the main pipe is arranged at the top of one end of the main pipe, and an exhaust valve and a pressure gauge are arranged on the exhaust pipe; the bottom of one end of the main pipeline is provided with an injection/drainage pipe communicated with the inside of the main pipeline, and the injection/drainage pipe is provided with an injection/drainage valve.
The two main pipelines are fixedly connected in a sealing way through a protruding surface flange.
The outer end part of the right main pipeline is fixedly connected with the right main pipeline in a sealing way through a mortise flange.
The outer end part of the left main pipeline is fixedly connected with the left main pipeline in a sealing way through a concave-convex flange.
One end of the bracket is welded with the left main pipeline.
The other end of the bracket is fixedly connected with the right main pipeline through a hoop and a hoop fastening nut.
The bottom of the bracket is fixed on the base.
The beneficial technical effects of the invention are as follows: the flange sealing and detecting simulation device for the power station water system equipment can provide a flange sealing operation platform for simulating a site for personnel, and has the function of detecting sealing effect. The simulation device is provided with three main structural form flanges: the flange with the protruding surface, the mortise and the concave-convex flange enable personnel to comprehensively master the sealing skills of flanges in different forms, the pressurizing interface of the simulation device is externally connected with the pressurizing pump to boost pressure, the system pressure is simulated, the flange sealing effect of the personnel is detected, the problems are timely exposed and corrected, the training effect is enhanced, and the flange sealing qualification rate after on-site system overhaul is improved. In addition, based on the simulation device, personnel can carry out off-line verification on the flange sealing method, and the sealing reliability is further improved.
Drawings
FIG. 1 is a front view of a power station water system equipment flange sealing and detection simulation device provided by the invention;
Fig. 2 is a side view of a flange sealing and detecting simulation device for a water system equipment of a power station.
In the figure: 1-tongue-and-groove flange, 2-flange bolt, 3-flange nut, 4-protruding surface flange, 5-concave-convex flange, 6-filling/draining valve, 7-filling/draining pipe, 8-draining valve, 9-draining pipe, 10-manometer, 11-main pipe, 12-bracket, 13-anchor ear fastening nut, 14-anchor ear and 15-base.
Detailed Description
The invention provides a power station water system equipment flange sealing and detecting simulation device which is further described in detail below with reference to the accompanying drawings and the embodiment.
As shown in fig. 1 and fig. 2, the invention provides a power station water system equipment flange sealing and detecting simulation device, which comprises a pipeline, a valve, a pressure gauge, a bracket and three types of flanges, wherein the components comprise: the flange comprises a mortise flange 1, a flange bolt 2, a flange nut 3, a protruding surface flange 4, a concave-convex flange 5, an injection/drainage valve 6, an injection/drainage pipe 7, an exhaust valve 8, an exhaust pipe 9, a pressure gauge 10, a main pipeline 11, a bracket 12, a hoop fastening nut 13, a hoop 14 and a base 15.
The base 15 is arranged on the ground, and the bracket 12 is welded with the base 15. The number of the main pipelines 11 is two, and the two main pipelines 11 are fixedly connected in a sealing way through the protruding surface flange 4, the flange bolts 2, the flange nuts 3 and the gaskets. The two main pipelines 11 are positioned on the bracket 12, one end of the bracket 12 is welded with the left main pipeline 11, and the other end of the bracket 12 is fixedly connected with the right main pipeline 11 through the anchor ear 14 and the anchor ear fastening nut 13. The outer end part of the right main pipe 11 is fixedly connected with the flange through a mortise flange 1, a flange bolt 2, a flange nut 3 and a gasket in a sealing way. The outer end part of the left main pipe 11 is fixedly connected with a gasket in a sealing way through a concave-convex flange 5, a flange bolt 2, a flange nut 3 and a gasket. The outer side end of the left main pipe 11 is provided with an injection/drainage valve 6, an injection/drainage pipe 7, an exhaust valve 8, an exhaust pipe 9 and a pressure gauge 10. The water injection/drainage pipe 7 is welded at the bottom of the left main pipe 11 and is communicated with the inside of the left main pipe 11, and the water injection/drainage pipe 7 is provided with a water injection/drainage valve 6; the exhaust pipe 9 is welded at the top position of the left main pipe 11 corresponding to the water filling/draining pipe 7, the exhaust pipe 9 is communicated with the inside of the left main pipe 11, the exhaust valve 8 is arranged on the exhaust pipe 9, and the pressure gauge 10 is arranged on the exhaust pipe 9 and between the exhaust valve 8 and the left main pipe 11.
The mounting process of the mortise flange 1, the flange bolts 2, the flange nuts 3, the protruding surface flange 4 and the concave-convex flange 5 is as follows: measuring the sealing surface sizes of the concave-convex flange 5, the mortise flange 1 and the protruding surface flange 4, and manufacturing corresponding sealing gaskets; and installing gaskets, flange bolts 2 and flange nuts 3 for each flange pair, and fastening, wherein each flange pair is provided with 8 bolts, when the flange 4 with the protruding surface is assembled, the anchor ear fastening nuts 13 are required to be loosened, and after the flange fastening is completed, the anchor ear nuts 13 are fastened.
As shown in fig. 1 and 2, the working principle of the power station water system equipment flange sealing and detecting simulation device provided by the invention is as follows:
Opening the exhaust valve 8 and the filling/draining valve 6; the pressurizing pump is used for injecting water into the device through the water injection/drainage pipe 7, the air in the main pipeline 11 is discharged, and when the continuous water flows out from the exhaust pipe 9, the exhaust valve 8 is closed. And (3) observing the reading of the pressure gauge 10, closing the injection/drainage valve 6 and stopping pressurizing after the reading of the pressure gauge 10 reaches 2.5Mpa, and observing whether the reading of the pressure gauge is lowered or whether leakage exists at the flange sealing position. And (3) opening the water filling/draining valve 6 to drain water, observing the pressure gauge 10, and opening the exhaust pipe 9 after the pressure of the pressure gauge 10 is zeroed, so that the water in the main pipe 11 is drained.
The bracket 12 and the base 15 are made of angle steel so as to reduce the overall weight of the device. The pipeline and the flange are made of carbon steel. The fastening bolt and nut 13 is made of carbon steel. The valve adopts a manual stop valve.
The flange sealing and detecting simulation device for the water system equipment of the power station provided by the invention is described in detail with reference to the drawings and the embodiment, but the invention is not limited to the embodiment, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the invention. The invention may be practiced otherwise than as specifically described.

Claims (2)

1. A power station water system equipment flange seals and detects analogue means, its characterized in that: the simulation device comprises a bracket (12), a main pipeline (11), an injection/drainage valve (6), an injection/drainage pipe (7), an exhaust valve (8), an exhaust pipe (9), a pressure gauge (10) and a flange, wherein the main pipeline (11) is arranged at the top of the bracket (12), and two ends of the main pipeline (11) are sealed through the flange; an exhaust pipe (9) communicated with the inside of the main pipe (11) is arranged at the top of one end of the main pipe, and an exhaust valve (8) and a pressure gauge (10) are arranged on the exhaust pipe (9); the bottom of one end of the main pipeline (11) is provided with a filling/draining pipe (7) communicated with the inside of the main pipeline, and the filling/draining pipe (7) is provided with a filling/draining valve (6); the two main pipelines (11) are fixedly connected in a sealing manner through a protruding surface flange (4), a flange bolt (2), a flange nut (3) and a gasket; the outer end part of the right main pipe (11) is fixedly connected in a sealing way through a mortise flange (1); one end of the bracket (12) is welded with the left main pipeline (11), and the other end of the bracket (12) is fixedly connected with the right main pipeline (11) through a hoop (14); the outer end part of the left main pipeline (11) is fixedly connected in a sealing way through a concave-convex flange (5); opening an exhaust valve (8) and a water injection/drainage valve (6), injecting water into the device through the water injection/drainage pipe (7) by using a pressurizing pump, discharging the internal air of the main pipeline (11), and closing the exhaust valve (8) when continuous water flows out of the exhaust pipe (9); when the reading of the pressure gauge (10) reaches 2.5Mpa, closing the filling/draining valve (6) and stopping pressing, and observing whether the reading of the pressure gauge (10) is lowered or whether leakage exists at the flange sealing position; and (3) opening the water filling/draining valve (6) to drain water, observing the pressure gauge (10), opening the exhaust pipe (9) after the pressure of the pressure gauge (10) is zeroed, and emptying water in the main pipeline (11) to finish the flange sealing and detection simulation test of the power station water system equipment.
2. The power station water system equipment flange sealing and detection simulation device according to claim 1, wherein: the bottom of the bracket (12) is fixed on the base (15).
CN201910245802.1A 2019-03-28 2019-03-28 Flange sealing and detection simulation device for power station water system equipment Active CN109916574B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112924112A (en) * 2021-04-02 2021-06-08 江苏核电有限公司 Nuclear power station voltage stabilizer electric heater tightness test device and test method thereof

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CN105423018A (en) * 2016-01-08 2016-03-23 武汉工程大学 Leakage detecting device of high-temperature flange connecting system
CN207263399U (en) * 2017-06-01 2018-04-20 天津市晓晖环保机械有限公司 A kind of multistation valve airtight detection apparatus
CN210293584U (en) * 2019-03-28 2020-04-10 江苏核电有限公司 Power station water system equipment flange seals and detects analogue means

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Publication number Priority date Publication date Assignee Title
CN105423018A (en) * 2016-01-08 2016-03-23 武汉工程大学 Leakage detecting device of high-temperature flange connecting system
CN207263399U (en) * 2017-06-01 2018-04-20 天津市晓晖环保机械有限公司 A kind of multistation valve airtight detection apparatus
CN210293584U (en) * 2019-03-28 2020-04-10 江苏核电有限公司 Power station water system equipment flange seals and detects analogue means

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