CN112129471A - A test device for check valve sealing - Google Patents

A test device for check valve sealing Download PDF

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Publication number
CN112129471A
CN112129471A CN202010920594.3A CN202010920594A CN112129471A CN 112129471 A CN112129471 A CN 112129471A CN 202010920594 A CN202010920594 A CN 202010920594A CN 112129471 A CN112129471 A CN 112129471A
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check valve
blind plate
sealing
test device
outlet
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Inventor
胡世福
代巍巍
张逵
朱功杰
曲啸天
陈思达
韩光辉
万川
忻勇
侯志华
吴雷
夏斌
刘胜
文桥
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CNNC Nuclear Power Operation Management Co Ltd
Nuclear Power Qinshan Joint Venture Co Ltd
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CNNC Nuclear Power Operation Management Co Ltd
Nuclear Power Qinshan Joint Venture Co Ltd
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Priority to CN202010920594.3A priority Critical patent/CN112129471A/en
Publication of CN112129471A publication Critical patent/CN112129471A/en
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    • 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
    • G01M3/2876—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 valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

本发明公开了一种用于止回阀密封试验装置，包括出口盲板，堵头，密封垫，压力表接头，接头，进口盲板，螺杆，螺母和压力表。所述的出口盲板与进口盲板之间连接有多个螺杆和螺母。所述的止回阀安装在出口盲板与进口盲板之间。所述的止回阀与出口盲板设置有密封垫。所述的止回阀与进口盲板设置有密封垫。所述的止回阀与出口盲板上与止回阀连接处开有第一通孔，第一通孔的一侧连接有接头。本发明的有益效果在于：使用本发明提供的止回阀密封试验装置，通过观察试验压力变化以，便可以直观地检验阀门密封性，从而提升止回阀加检修质量及设备可靠性。并且该装置结构简单，操作便捷试验结果读取便捷可靠，可适用范围较广。

Figure 202010920594

The invention discloses a sealing test device for a check valve, comprising an outlet blind plate, a plug, a sealing gasket, a pressure gauge joint, a joint, an inlet blind plate, a screw rod, a nut and a pressure gauge. A plurality of screws and nuts are connected between the outlet blind plate and the inlet blind plate. The check valve is installed between the outlet blind plate and the inlet blind plate. The check valve and the outlet blind plate are provided with sealing gaskets. The check valve and the inlet blind plate are provided with sealing gaskets. A first through hole is opened at the connection between the check valve and the outlet blind plate and the check valve, and a joint is connected to one side of the first through hole. The beneficial effect of the present invention is that: by using the check valve sealing test device provided by the present invention, by observing the change of the test pressure, the sealing performance of the valve can be checked intuitively, thereby improving the check valve repair quality and equipment reliability. In addition, the device has simple structure, convenient operation, convenient and reliable reading of test results, and wide application range.

Figure 202010920594

Description

一种用于止回阀密封试验装置A test device for check valve sealing

技术领域technical field

本发明属于核电站止回阀维修领域，具体涉及一种用于止回阀密封试验装置。The invention belongs to the field of check valve maintenance in nuclear power plants, and particularly relates to a sealing test device for a check valve.

背景技术Background technique

由于特殊的自动止回功能，止回阀广泛应用在核电站各水、汽回路系统中。但由于长期介质冲刷，频繁启闭，止回阀泄漏缺陷频繁发生，在对止回阀进行检修维护过程中，需要对阀瓣及阀座密封面进行研磨并验证密封性，在现有的止回阀检修程序中一般只通过兰油试验检查密封面压线从而验证密封性，该验证方式很大程度上依赖于操作者技能水平，无法完全保证阀门密封性。一旦阀门密封不严将导致重复性停役，浪费人力物力。Due to the special automatic check function, check valves are widely used in various water and steam circuit systems of nuclear power plants. However, due to long-term medium scouring, frequent opening and closing, and frequent opening and closing of the check valve, leakage defects of the check valve frequently occur. During the maintenance and repair of the check valve, it is necessary to grind the valve disc and the sealing surface of the valve seat and verify the sealing performance. In the return valve maintenance procedure, only the pressure line of the sealing surface is checked by the blue oil test to verify the tightness. This verification method largely depends on the skill level of the operator and cannot fully guarantee the tightness of the valve. Once the valve is not tightly sealed, it will lead to repeated shutdowns, wasting manpower and material resources.

因此设计、制作止回阀密封试验装置，对检修后止回阀进行密封试验，可以快捷简便地验证阀门密封性，确保阀门密封可靠性，从而保证电站系统稳定运行。Therefore, the design and manufacture of the check valve sealing test device, and the sealing test of the check valve after maintenance can quickly and easily verify the sealing performance of the valve, ensure the reliability of the valve sealing, and thus ensure the stable operation of the power station system.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于提供一种用于止回阀密封试验装置，它能够解决止回阀检修过程中密封性无法可靠验证的问题，提升止回阀检修质量。The purpose of the present invention is to provide a sealing test device for a check valve, which can solve the problem that the sealing performance of the check valve cannot be reliably verified during the maintenance process of the check valve, and improve the maintenance quality of the check valve.

本发明的技术方案如下：一种用于止回阀密封试验装置，包括出口盲板，堵头，密封垫，压力表接头，接头，进口盲板，螺杆，螺母和压力表。The technical scheme of the present invention is as follows: a sealing test device for a check valve, comprising an outlet blind plate, a plug, a sealing gasket, a pressure gauge joint, a joint, an inlet blind plate, a screw rod, a nut and a pressure gauge.

所述的出口盲板与进口盲板之间连接有多个螺杆和螺母。A plurality of screws and nuts are connected between the outlet blind plate and the inlet blind plate.

所述的止回阀安装在出口盲板与进口盲板之间。The check valve is installed between the outlet blind plate and the inlet blind plate.

所述的止回阀与出口盲板设置有密封垫。The check valve and the outlet blind plate are provided with sealing gaskets.

所述的止回阀与进口盲板设置有密封垫。The check valve and the inlet blind plate are provided with sealing gaskets.

所述的止回阀与出口盲板上与止回阀连接处开有第一通孔，第一通孔的一侧连接有接头。A first through hole is opened at the connection between the check valve and the outlet blind plate and the check valve, and a joint is connected to one side of the first through hole.

所述的止回阀与进口盲板上与止回阀连接处开有第二通孔，第二通孔的一侧连接有堵头。A second through hole is opened at the connection between the check valve and the inlet blind plate and the check valve, and a plug is connected to one side of the second through hole.

所述的止回阀与出口盲板上还开有第三通孔与出口盲板上与止回阀连接处相通，第三通孔的顶部连接有压力表接头，压力表接头连接有压力表。The check valve and the outlet blind plate are also provided with a third through hole which communicates with the connection between the outlet blind plate and the check valve, the top of the third through hole is connected with a pressure gauge connector, and the pressure gauge connector is connected with a pressure gauge .

所述的止回阀与所述的出口盲板与进口盲板为板状结构。The check valve, the outlet blind plate and the inlet blind plate are plate-like structures.

所述的密封垫材质为聚四氟乙烯。The material of the sealing gasket is polytetrafluoroethylene.

本发明的有益效果在于：使用本发明提供的止回阀密封试验装置，通过观察试验压力变化以，便可以直观地检验阀门密封性，从而提升止回阀加检修质量及设备可靠性。并且该装置结构简单，操作便捷试验结果读取便捷可靠，可适用范围较广。The beneficial effect of the present invention is that: by using the check valve sealing test device provided by the present invention, by observing the change of the test pressure, the sealing performance of the valve can be inspected intuitively, thereby improving the check valve repair quality and equipment reliability. In addition, the device has simple structure, convenient operation, convenient and reliable reading of test results, and wide application range.

附图说明Description of drawings

图1为本发明所提供的一种用于止回阀密封试验装置示意图。FIG. 1 is a schematic diagram of a sealing test device for a check valve provided by the present invention.

图中，1出口盲板，2堵头，3密封垫，4压力表接头，5接头，6进口盲板，7螺杆，8螺母，9压力表，10止回阀，11第一通孔，12第二通孔，13第三通孔。In the figure, 1 outlet blind plate, 2 plug, 3 gasket, 4 pressure gauge connector, 5 connector, 6 inlet blind plate, 7 screw rod, 8 nut, 9 pressure gauge, 10 check valve, 11 first through hole, 12 second through hole, 13 third through hole.

具体实施方式Detailed ways

下面结合附图及具体实施例对本发明作进一步详细说明。The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

如图1所示，一种用于止回阀密封试验装置包括出口盲板1，堵头2，密封垫3，压力表接头4，接头5，进口盲板6，螺杆7，螺母8和压力表9。As shown in Figure 1, a test device for check valve sealing includes outlet blind plate 1, plug 2, gasket 3, pressure gauge joint 4, joint 5, inlet blind plate 6, screw 7, nut 8 and pressure Table 9.

其中，出口盲板1与进口盲板6之间连接有多个螺杆7和螺母8，止回阀10安装在出口盲板1与进口盲板6之间，止回阀10与出口盲板1和进口盲板6均设置有密封垫3，出口盲板1上与止回阀10连接处开有第一通孔11，第一通孔11的一侧连接有接头5，接头5可接水压泵，进口盲板6上与止回阀10连接处开有第二通孔12，第二通孔12的一侧连接有堵头2，出口盲板1上还开有第三通孔13与出口盲板1上与止回阀10连接处相通，第三通孔13的顶部连接有压力表接头4，压力表接头4连接有压力表9。Among them, a plurality of screws 7 and nuts 8 are connected between the outlet blind plate 1 and the inlet blind plate 6, the check valve 10 is installed between the outlet blind plate 1 and the inlet blind plate 6, and the check valve 10 and the outlet blind plate 1 Both the inlet blind plate 6 and the inlet blind plate 6 are provided with a sealing gasket 3, the outlet blind plate 1 has a first through hole 11 at the connection with the check valve 10, and one side of the first through hole 11 is connected with a joint 5, and the joint 5 can receive water Pressure pump, the inlet blind plate 6 has a second through hole 12 at the connection with the check valve 10, one side of the second through hole 12 is connected with a plug 2, and the outlet blind plate 1 also has a third through hole 13. It communicates with the connection between the outlet blind plate 1 and the check valve 10 , the top of the third through hole 13 is connected with a pressure gauge connector 4 , and the pressure gauge connector 4 is connected with a pressure gauge 9 .

其中，所述的出口盲板1与进口盲板6为板状结构，螺杆7和螺母8共有四组。Wherein, the outlet blind plate 1 and the inlet blind plate 6 are plate-like structures, and there are four sets of screws 7 and nuts 8 in total.

下面结合图1进行说明：The following description is given in conjunction with Figure 1:

①通过进、出口盲板以及连接螺杆对止回阀进行可靠夹持，并提供密封力，止回阀进出口通过密封垫3与盲板建立密封。其中密封垫3材质为聚四氟乙烯，可根据阀门进出口连接形式(焊接式、法兰式)加工制作；①Reliably clamp the check valve through the inlet and outlet blind plates and the connecting screw, and provide sealing force. The inlet and outlet of the check valve are sealed with the blind plate through the gasket 3. The gasket 3 is made of polytetrafluoroethylene, which can be processed according to the connection form of the valve inlet and outlet (welding type, flange type);

②在进口盲板上加工内螺纹接口并与止回阀进口打通，作为水压泵接口，在进口盲板侧面加工压力表接口，连接表接头，安装压力表；②Process the internal thread interface on the inlet blind plate and open it with the inlet of the check valve, as the interface of the hydraulic pump, process the pressure gauge interface on the side of the inlet blind plate, connect the gauge connector, and install the pressure gauge;

③在出口盲板侧预留螺纹接口，可作为阀门密封试验泄漏观测点，另外也可通过加装堵头，实现对止回阀阀体及中法兰的密封试验。③The threaded interface is reserved on the side of the outlet blind plate, which can be used as the leakage observation point of the valve sealing test. In addition, the sealing test of the check valve body and the middle flange can also be realized by adding a plug.

通过密封试验装置进行止回阀密封试验，核心在于：The check valve sealing test is carried out through the sealing test device. The core is:

①实现止回阀可靠夹持，以及进出口有效密封；①Reliable clamping of the check valve and effective sealing of the inlet and outlet;

②提供打压接口，以及压力检测接口；②Provide pressure interface and pressure detection interface;

③实现止回阀阀瓣、阀座密封性试验以及阀体、中法兰密封试验两种功能。③It can realize the two functions of the check valve disc and valve seat sealing test and the valve body and middle flange sealing test.

本密封试验装置主要创新点在于：The main innovations of this sealing test device are:

1.特殊的阀门密封面结构，可以用于焊接形式止回阀打压，也适用于法兰形式止回阀密封试验，使用范围广；1. The special valve sealing surface structure can be used for welding check valve pressure, and also suitable for flange check valve sealing test, with a wide range of applications;

2.实验装置简单可靠，操作便捷，试验结果读取直观、方便。2. The experimental device is simple and reliable, the operation is convenient, and the reading of the test results is intuitive and convenient.

Claims (10)

1. The utility model provides a be used for check valve seal test device which characterized in that: the pressure gauge comprises an outlet blind plate, a plug, a sealing gasket, a pressure gauge joint, a joint, an inlet blind plate, a screw, a nut and a pressure gauge.
2. A test device for testing the sealing of a check valve according to claim 1, wherein: and a plurality of screw rods and nuts are connected between the outlet blind plate and the inlet blind plate.
3. A test device for testing the sealing of a check valve according to claim 1, wherein: the check valve is installed between the outlet blind plate and the inlet blind plate.
4. A test device for testing the sealing of a check valve according to claim 1, wherein: and the check valve and the outlet blind plate are provided with sealing gaskets.
5. A test device for testing the sealing of a check valve according to claim 1, wherein: and the check valve and the inlet blind plate are provided with sealing gaskets.
6. A test device for testing the sealing of a check valve according to claim 1, wherein: a first through hole is formed in the joint of the check valve and the outlet blind plate and the check valve, and a joint is connected to one side of the first through hole.
7. A test device for testing the sealing of a check valve according to claim 1, wherein: and a second through hole is formed at the joint of the check valve and the inlet blind plate and the check valve, and one side of the second through hole is connected with a plug.
8. A test device for testing the sealing of a check valve according to claim 1, wherein: the check valve and the outlet blind plate are also provided with a third through hole which is communicated with the joint of the outlet blind plate and the check valve, the top of the third through hole is connected with a pressure gauge joint, and the pressure gauge joint is connected with a pressure gauge.
9. A test device for testing the sealing of a check valve according to claim 1, wherein: the check valve and the outlet blind plate and the inlet blind plate are of plate-shaped structures.
10. A test device for testing the sealing of a check valve according to claim 1, wherein: the sealing gasket is made of polytetrafluoroethylene.
CN202010920594.3A 2020-09-04 2020-09-04 A test device for check valve sealing Pending CN112129471A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113028166A (en) * 2021-02-25 2021-06-25 西安航天发动机有限公司 Switching pre-tightening type sealing structure and sealing method of shaft assembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201327434Y (en) * 2008-11-27 2009-10-14 秦山核电有限公司 On-line experimental unit for portable welding check valve
KR20100045242A (en) * 2008-10-23 2010-05-03 한전케이피에스 주식회사 Sealing test device for swing check valve on reactor coolant pressure boundary
CN102788692A (en) * 2012-07-17 2012-11-21 浙江石化阀门有限公司 Thermal state seal test device of superhigh temperature hot valve
CN205424005U (en) * 2015-12-18 2016-08-03 安徽方兴实业（集团）有限公司 Heavy -calibre flange joint valve
CN207649843U (en) * 2017-12-28 2018-07-24 陕西航天机电环境工程设计院有限责任公司 A kind of valve test tool
CN209524224U (en) * 2018-12-21 2019-10-22 核动力运行研究所 A kind of mechanical plug tool suppressed for check-valves
CN209625812U (en) * 2019-01-30 2019-11-12 中广核工程有限公司 Nuclear fuel transfer tube pressure test device
CN210603733U (en) * 2019-09-23 2020-05-22 福建福清核电有限公司 Novel special blind plate for valve sealing test of nuclear island ventilation system
CN213516236U (en) * 2020-09-04 2021-06-22 中核核电运行管理有限公司 Sealing test device for check valve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100045242A (en) * 2008-10-23 2010-05-03 한전케이피에스 주식회사 Sealing test device for swing check valve on reactor coolant pressure boundary
CN201327434Y (en) * 2008-11-27 2009-10-14 秦山核电有限公司 On-line experimental unit for portable welding check valve
CN102788692A (en) * 2012-07-17 2012-11-21 浙江石化阀门有限公司 Thermal state seal test device of superhigh temperature hot valve
CN205424005U (en) * 2015-12-18 2016-08-03 安徽方兴实业（集团）有限公司 Heavy -calibre flange joint valve
CN207649843U (en) * 2017-12-28 2018-07-24 陕西航天机电环境工程设计院有限责任公司 A kind of valve test tool
CN209524224U (en) * 2018-12-21 2019-10-22 核动力运行研究所 A kind of mechanical plug tool suppressed for check-valves
CN209625812U (en) * 2019-01-30 2019-11-12 中广核工程有限公司 Nuclear fuel transfer tube pressure test device
CN210603733U (en) * 2019-09-23 2020-05-22 福建福清核电有限公司 Novel special blind plate for valve sealing test of nuclear island ventilation system
CN213516236U (en) * 2020-09-04 2021-06-22 中核核电运行管理有限公司 Sealing test device for check valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113028166A (en) * 2021-02-25 2021-06-25 西安航天发动机有限公司 Switching pre-tightening type sealing structure and sealing method of shaft assembly

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Application publication date: 20201225

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