CN104458163A - Valve leakage detection device and detection method thereof - Google Patents
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Abstract
本发明公开了一种阀门泄露检测装置及其检测方法，涉及阀门、安装在该阀门上的阀杆，包括与所述阀门两端相配合的第一、第二堵头、与所述第一堵头连通的进气阀、第一出气阀、压力传感器；所述进气阀与外界气泵连接，所述进气阀、第一出气阀、压力传感器通过所述第一堵头与所述阀门连通。本发明通过压力传感器来检测阀门内气体的压力来与设定值进行比较，从而来检测阀门是否内漏，结构简单紧凑、操作方便快捷、检测准确直观、搬运携带方便，方便操作人员在施工现场检测阀门的密闭性，可降低操作人员劳动强度，提高工作效率。
The invention discloses a valve leakage detection device and a detection method thereof, which relate to a valve, a valve stem installed on the valve, including first and second plugs matched with The inlet valve, the first outlet valve, and the pressure sensor connected by the plug; the inlet valve is connected to the external air pump, and the inlet valve, the first outlet valve, and the pressure sensor are connected to the valve through the first plug connected. The invention uses a pressure sensor to detect the pressure of the gas in the valve and compares it with the set value to detect whether the valve is leaking. The structure is simple and compact, the operation is convenient and fast, the detection is accurate and intuitive, and the transportation is convenient. Detecting the tightness of the valve can reduce the labor intensity of the operator and improve work efficiency.
Description
技术领域technical field
本发明涉及阀门检测设备技术领域，具体涉及一种阀门泄露检测装置及其检测方法。The invention relates to the technical field of valve detection equipment, in particular to a valve leakage detection device and a detection method thereof.
背景技术Background technique
球阀是一种球体由阀杆带动并绕阀杆的轴线作旋转运动的阀门，球体有圆形通孔或通道通过其轴线。主要用于截断或接通管路中的介质，亦可用于流体的调节与控制。球阀的泄漏可分为内泄漏和外泄漏。阀门关闭不严形成的泄漏为内漏，常发生在阀座与球体的接触面上。我国虽然是球阀生产大国，但内漏检测的手段却十分落后，从行业来看，绝大多数球阀生产企业采用的是人工水检的方式进行检测。即通过阀杆打开球阀的球体，将压缩气体充入球腔内，关闭球体，然后将球阀放入水中，观察球阀进口和出口处的球体与阀体之间、阀杆与阀体之间是否有气泡泄漏，进而判断球阀是否合格。水检法优点是能一次性检测出内漏和外漏，缺点是需要人工判断，后续还需要清洗和烘干等工序。最主要的，是难以实现自动化检测，难以提升检测水平及效率。究其原因，是因为球阀结构的特殊性，测漏点较多而难以采用常规的自动化检测手段一次性完成内漏的检测。A ball valve is a valve in which the ball is driven by the valve stem and rotates around the axis of the valve stem. The ball has a circular through hole or channel passing through its axis. It is mainly used to cut off or connect the medium in the pipeline, and can also be used for the regulation and control of the fluid. Ball valve leakage can be divided into internal leakage and external leakage. The leakage caused by the lax closing of the valve is internal leakage, which often occurs on the contact surface between the valve seat and the ball. Although my country is a big country in the production of ball valves, the means of internal leakage detection is very backward. From the perspective of the industry, most ball valve manufacturers use manual water inspection for detection. That is, open the ball of the ball valve through the valve stem, fill the compressed gas into the ball cavity, close the ball, and then put the ball valve into the water to observe whether there is a gap between the ball and the valve body at the inlet and outlet of the ball valve, and between the valve stem and the valve body. If there is air bubble leakage, then judge whether the ball valve is qualified. The advantage of the water detection method is that it can detect internal and external leaks at one time. The disadvantage is that manual judgment is required, and subsequent cleaning and drying processes are required. The most important thing is that it is difficult to realize automatic detection, and it is difficult to improve the detection level and efficiency. The reason is that due to the particularity of the structure of the ball valve, there are many leak detection points, so it is difficult to use conventional automatic detection methods to complete the internal leakage detection at one time.
在中国专利申请号；201320245245中公开了一种阀门密封检测装置，包括测试件安装座、密封压头和透明的观察管，密封压头以能升降的方式对应测试件安装座设置，密封压头和测试件安装座内分别设有能相互导通的通道，测试件安装座内的通道连通观察管。该技术方案结构较为复杂，使用方法复杂，有待进一步改进。In the Chinese patent application number; 201320245245, a valve sealing detection device is disclosed, including a test piece mounting seat, a sealing pressure head and a transparent observation tube. Channels that can communicate with each other are respectively provided in the test piece mounting seat, and the channels in the test piece mounting seat are connected to the observation tube. The structure of this technical scheme is relatively complicated, and the method of use is complicated, which needs to be further improved.
发明内容Contents of the invention
针对上述问题，本发明提供了一种阀门泄露检测装置及其检测方法，检测效果好，使用方便，减少了人工作业强度、提高了作业效率。In view of the above problems, the present invention provides a valve leakage detection device and a detection method thereof, which have good detection effect, are easy to use, reduce manual work intensity, and improve work efficiency.
为了解决上述问题，本发明提供的技术方案为：In order to solve the above problems, the technical solution provided by the invention is:
一种阀门泄露检测装置，涉及阀门、安装在该阀门上的阀杆，包括与所述阀门两端相配合的第一、第二堵头、与所述第一堵头连通的进气阀、第一出气阀、压力传感器；所述进气阀与外界气泵连接，所述进气阀、第一出气阀、压力传感器通过所述第一堵头与所述阀门连通。A valve leakage detection device, involving a valve, a valve stem installed on the valve, including first and second plugs matched with both ends of the valve, an intake valve communicated with the first plug, A first air outlet valve and a pressure sensor; the air intake valve is connected to an external air pump, and the air intake valve, the first air outlet valve, and the pressure sensor communicate with the valve through the first plug.
优选的，所述第二堵头上还设有与其连通的第二出气阀，所述第二出气阀通过所述第二堵头与所述阀门连通。Preferably, the second plug is further provided with a second outlet valve communicating with it, and the second outlet valve communicates with the valve through the second plug.
优选的，检测装置还包括用于旋转所述阀杆以实现所述阀门的打开或闭合的夹具。Preferably, the detection device further includes a fixture for rotating the valve stem to realize the opening or closing of the valve.
优选的，所述第一、第二堵头为橡胶材料。Preferably, the first and second plugs are made of rubber material.
阀门泄露检测装置的检测方法，包括以下步骤；A detection method of a valve leakage detection device, comprising the following steps;
(1)用所述第一、第二堵头将所述阀门的两端堵住；(1) block the two ends of the valve with the first and second plugs;
(2)通过夹具旋转阀杆打开所述阀门、关闭所述第一、第二放气阀；(2) Open the valve and close the first and second air release valves by rotating the valve stem through the clamp;
(3)通过所述进气阀向所述阀门内注入气体，所述阀门的气体的压力大于外部大气压；(3) Inject gas into the valve through the inlet valve, and the pressure of the gas in the valve is greater than the external atmospheric pressure;
(4)关闭所述阀门；(4) closing the valve;
(5)打开所述第一、第二放气阀，降压至外部气压；(5) Open the first and second air release valves to reduce the pressure to external air pressure;
(6)关闭所述第二放气阀，再打开所述阀门；(6) close the second deflation valve, and then open the valve;
(7)通过所述压力传感器检测气压，并与设定值进行比较；检测值等于设定值，则阀门无内漏；检测值小于设定值，则阀门有内漏。(7) The air pressure is detected by the pressure sensor and compared with the set value; if the detected value is equal to the set value, the valve has no internal leakage; if the detected value is less than the set value, the valve has internal leakage.
该检测方法是针对球阀进行泄露检测，通过所述第一、第二放气阀放出阀门两端的气体后，然后通过夹具旋转阀杆打开阀门，利用压力传感器检测打开阀门时排出的气压，然后与刚开始注入的气压进行比较；如检测值等于刚开始注入的气压，则阀门无内漏；如检测值小于刚开始注入的气压，则阀门有内漏。本技术方案检测阀门打开时的气压值，即检测阀门内的气体动压值，当然，也可以不打开阀门，这样就是检测阀门内的气体静压值，但是该检测方法检测效果不理想，检测时间长，且只能检测阀门的一端是否有内漏，另一端检测不出。The detection method is to detect the leakage of the ball valve. After the gas at both ends of the valve is released through the first and second air release valves, the valve stem is rotated by the clamp to open the valve, and the pressure sensor is used to detect the air pressure discharged when the valve is opened. Compare the air pressure at the beginning of injection; if the detected value is equal to the air pressure at the beginning of injection, the valve has no internal leakage; if the detection value is less than the air pressure at the beginning of injection, the valve has internal leakage. This technical solution detects the air pressure value when the valve is opened, that is, detects the dynamic pressure value of the gas in the valve. Of course, the valve may not be opened, so that the static pressure value of the gas in the valve is detected, but the detection effect of this detection method is not ideal. It takes a long time, and it can only detect whether there is internal leakage at one end of the valve, but not at the other end.
阀门泄露检测装置的检测方法，包括以下步骤；A detection method of a valve leakage detection device, comprising the following steps;
(1)用所述第一、第二堵头将所述阀门的两端堵住；(1) block the two ends of the valve with the first and second plugs;
(2)通过夹具旋转阀杆打开所述阀门、关闭所述第一、第二放气阀；(2) Open the valve and close the first and second air release valves by rotating the valve stem through the clamp;
(3)通过所述进气阀向所述阀门内注入气体，所述阀门的气体的压力大于外部大气压；(3) Inject gas into the valve through the inlet valve, and the pressure of the gas in the valve is greater than the external atmospheric pressure;
(4)关闭所述阀门；(4) closing the valve;
(5)打开所述第一放气阀，降压至外部气压，再打开所述阀门；(5) Open the first air release valve, reduce the pressure to the external air pressure, and then open the valve;
(6)通过所述压力传感器检测气压，并与设定值进行比较；检测值等于设定值，则阀门无内漏；检测值小于设定值，则阀门有内漏。(6) The air pressure is detected by the pressure sensor and compared with the set value; if the detected value is equal to the set value, the valve has no internal leakage; if the detected value is less than the set value, the valve has internal leakage.
该检测方法能够检测不同种类的阀门是否有内漏。This detection method can detect whether there is internal leakage in different types of valves.
与现有技术相比，本发明的有益效果为：Compared with prior art, the beneficial effect of the present invention is:
本发明通过压力传感器来检测阀门内气体的压力来与设定值进行比较，从而来检测阀门是否内漏，结构简单紧凑、操作方便快捷、检测准确直观、搬运携带方便，方便操作人员在施工现场检测阀门的密闭性，可降低操作人员劳动强度，提高工作效率。The invention uses a pressure sensor to detect the pressure of the gas in the valve and compares it with the set value to detect whether the valve is leaking. The structure is simple and compact, the operation is convenient and fast, the detection is accurate and intuitive, and the transportation is convenient. Detecting the tightness of the valve can reduce the labor intensity of the operator and improve work efficiency.
附图说明Description of drawings
图1为本发明的实施例1的结构示意图；Fig. 1 is the structural representation of embodiment 1 of the present invention;
图2为本发明的实施例2的结构示意图。Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.
图中：1、阀门，2、阀杆，3、第一堵头，4、第二堵头，5、进气阀，6、第一出气阀，7、压力传感器，8、第二出气阀，9、夹具，10、球体。In the figure: 1. valve, 2. valve stem, 3. first plug, 4. second plug, 5. intake valve, 6. first outlet valve, 7. pressure sensor, 8. second outlet valve , 9, fixture, 10, sphere.
具体实施方式Detailed ways
下面对本发明做进一步说明：The present invention is described further below:
实施例1；Embodiment 1;
结合图1：一种阀门泄露检测装置，涉及阀门1、安装在该阀门1上的阀杆2，包括与阀门1两端相配合的第一、第二堵头、与第一堵头3连通的进气阀5、第一出气阀6、压力传感器7；进气阀5与外界气泵连接，进气阀5、第一出气阀6、压力传感器7通过第一堵头3与阀门1连通。Combined with Figure 1: a valve leakage detection device, involving a valve 1, a valve stem 2 installed on the valve 1, including first and second plugs matched with both ends of the valve 1, and communicating with the first plug 3 The inlet valve 5, the first outlet valve 6, and the pressure sensor 7; the inlet valve 5 is connected with the external air pump, and the inlet valve 5, the first outlet valve 6, and the pressure sensor 7 communicate with the valve 1 through the first plug 3.
第二堵头4上还设有与其连通的第二出气阀8，第二出气阀8通过第二堵头4与阀门1连通。The second plug 4 is also provided with a second outlet valve 8 communicating with it, and the second outlet valve 8 communicates with the valve 1 through the second plug 4 .
检测装置还包括用于旋转阀杆2以实现阀门1的打开或闭合的夹具9。The detection device also includes a fixture 9 for rotating the valve stem 2 to realize the opening or closing of the valve 1 .
第一、第二堵头为橡胶材料。The first and second plugs are made of rubber material.
阀门泄露检测装置的检测方法，包括以下步骤；A detection method of a valve leakage detection device, comprising the following steps;
(1)用第一、第二堵头将阀门1的两端堵住；(1) Block both ends of the valve 1 with the first and second plugs;
(2)通过夹具9旋转阀杆2打开阀门1、关闭第一、第二放气阀；(2) Open the valve 1 by rotating the valve stem 2 with the fixture 9, and close the first and second air release valves;
(3)通过外界气泵、进气阀5向阀门1内注入气体，阀门1的气体的压力大于外部大气压；(3) Inject gas into valve 1 by an external air pump and intake valve 5, and the pressure of the gas in valve 1 is greater than the external atmospheric pressure;
(4)关闭阀门1；(4) close valve 1;
(5)打开第一、第二放气阀，降压至外部气压；(5) Open the first and second air release valves to lower the pressure to the external air pressure;
(6)关闭第二放气阀8，再打开阀门1；(6) Close the second deflation valve 8, and then open the valve 1;
(7)通过压力传感器7检测阀门1打开时的气压，再与设定值进行比较。(7) The air pressure when the valve 1 is opened is detected by the pressure sensor 7, and then compared with the set value.
该检测方法是针对球阀进行泄露检测，通过第一、第二放气阀放出阀门1两端的气体后，然后通过夹具旋转阀杆打开阀门1，将球体10内的气体放出，利用压力传感器4检测打开阀门1时排出的气压，然后与刚开始注入的气压进行比较；如检测值等于刚开始注入的气压，则阀门1无内漏；如检测值小于刚开始注入的气压，则阀门1有内漏。本实施例检测阀门1打开时的气压值，即检测阀门1内的气体动压值，当然，也可以不打开阀门1，这样就是检测阀门1内的气体静压值，但是该检测方法检测效果不理想，检测时间长，且只能检测阀门1的一端是否有内漏，另一端检测不出。This detection method is to detect the leakage of the ball valve. After the gas at both ends of the valve 1 is released through the first and second air release valves, the valve 1 is opened by rotating the valve stem through the fixture, and the gas in the ball 10 is released. The pressure sensor 4 is used to detect The air pressure discharged when opening valve 1 is compared with the air pressure at the beginning of injection; if the detected value is equal to the air pressure at the beginning of injection, then valve 1 has no internal leakage; if the detection value is less than the air pressure at the beginning of injection, valve 1 has internal leakage leak. This embodiment detects the air pressure value when the valve 1 is opened, that is, detects the dynamic pressure value of the gas in the valve 1. Of course, the valve 1 may not be opened, so that the static pressure value of the gas in the valve 1 is detected, but the detection effect of this detection method is Not ideal, the detection time is long, and only one end of the valve 1 can be detected for internal leakage, but the other end cannot be detected.
实施例2；Embodiment 2;
结合图2：一种阀门泄露检测装置，涉及阀门1、安装在该阀门1上的阀杆2，包括与阀门1两端相配合的第一、第二堵头、与第一堵头3连通的进气阀5、第一出气阀6、压力传感器7；进气阀5与外界气泵连接，进气阀5、第一出气阀6、压力传感器7通过第一堵头3与阀门1连通。Combined with Figure 2: a valve leakage detection device, involving a valve 1, a valve stem 2 installed on the valve 1, including first and second plugs matched with both ends of the valve 1, and communicating with the first plug 3 The inlet valve 5, the first outlet valve 6, and the pressure sensor 7; the inlet valve 5 is connected with the external air pump, and the inlet valve 5, the first outlet valve 6, and the pressure sensor 7 communicate with the valve 1 through the first plug 3.
第二堵头4上还设有与其连通的第二出气阀8，第二出气阀8通过第二堵头4与阀门1连通。The second plug 4 is also provided with a second outlet valve 8 communicating with it, and the second outlet valve 8 communicates with the valve 1 through the second plug 4 .
检测装置还包括用于旋转阀杆2以实现阀门1的打开或闭合的夹具9。The detection device also includes a fixture 9 for rotating the valve stem 2 to realize the opening or closing of the valve 1 .
第一、第二堵头为橡胶材料。The first and second plugs are made of rubber material.
阀门泄露检测装置的检测方法，包括以下步骤；A detection method of a valve leakage detection device, comprising the following steps;
(1)用第一、第二堵头将阀门1的两端堵住；(1) Block both ends of the valve 1 with the first and second plugs;
(2)通过夹具9旋转阀杆2打开阀门1、关闭第一、第二放气阀；(2) Open the valve 1 by rotating the valve stem 2 with the fixture 9, and close the first and second air release valves;
(3)通过外界气泵、进气阀5向阀门1内注入气体，阀门1的气体的压力大于外部大气压；(3) Inject gas into valve 1 by an external air pump and intake valve 5, and the pressure of the gas in valve 1 is greater than the external atmospheric pressure;
(4)关闭阀门1；(4) close valve 1;
(5)打开第一放气阀6，降压至外部气压，再打开阀门1；(5) Open the first air release valve 6, reduce the pressure to the external air pressure, and then open the valve 1;
(6)通过压力传感器检测气压，并与设定值进行比较。(6) The air pressure is detected by the pressure sensor and compared with the set value.
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.
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| CN201410592038.2A Pending CN104458163A (en) | 2014-10-28 | 2014-10-28 | Valve leakage detection device and detection method thereof |
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Cited By (3)
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| CN108088629A (en) * | 2018-01-16 | 2018-05-29 | 沪航科技集团有限公司 | Valve pressure detection machine |
| CN109341984A (en) * | 2018-11-09 | 2019-02-15 | 安徽中科智能高技术有限责任公司 | A kind of gate valve anhydrous on-line tightness detection device and detection method |
| CN114427943A (en) * | 2020-09-28 | 2022-05-03 | 中国石油化工股份有限公司 | Self-operated pressure regulating valve detection system and method |
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| CN114427943A (en) * | 2020-09-28 | 2022-05-03 | 中国石油化工股份有限公司 | Self-operated pressure regulating valve detection system and method |
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