Leakage detection joint for P + T sensor

Abstract

The utility model relates to a leak detection joint for a P + T sensor. The leak detection joint comprises a base, an adapter and a first sealing ring, a first air inlet channel penetrates through the base; the adapter is fixed to the bottom of the base and is in sealed connection with the base, a second air inlet channel is formed in the adapter in a penetrating mode, the top of the second air inlet channel is communicated with the first air inlet channel, and an internal thread section is arranged at the bottom of the second air inlet channel and used for being connected with an external thread connector of a P + T sensor; and the first sealing ring is embedded in the internal thread section. As the first sealing ring is embedded in the internal thread section, when the leak detection joint is used for assembling the P + T sensor, a sealing ring does not need to be assembled on an external thread joint of the P + T sensor, and the sealing ring does not need to be taken down from the external thread joint after a helium leak detection test is completed, so that time and labor are saved, and the detection efficiency is improved. Meanwhile, the situation that threads of the external thread connector of the P + T sensor are clamped and damaged due to the fact that the sealing ring is assembled and disassembled can be avoided, and the quality of the P + T sensor is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sensor technical field, especially, relate to a kind of leak detection joint for P+T sensor. BACKGROUND

[0002] Helium leak detection is a kind of leak detection joint for P+T sensor uses leak detector, and the measuring method for leak detection from the change of helium concentration in vacuum. Compared with other detection methods, it does not depend on the skill of operator, has high sensitivity and high precision. Even if the leakage is small, it does not need to spend a long time, so it can be detected quickly. In addition, helium is a safe inert gas, so it is environmentally friendly and suitable for leak detection.

[0003] P+T sensor, i.e. pressure and temperature combination sensor, is a kind of leak detection joint for P+T sensor that can measure pressure and temperature simultaneously, and is widely used in automotive field. When helium leak detection is performed on P+T sensor, the P+T sensor needs to be connected with helium detection equipment through leak detection joint. The existing leak detection joint includes base and adapter, the base is fixed at the bottom of helium detection equipment, the adapter is fixed at the bottom of the base, the adapter has internal thread hole at the bottom, and when assembling P+T sensor product, sealing ring needs to be assembled on the external thread joint of P+T sensor first, then the external thread joint is connected with the internal thread hole of the adapter, and sealing is performed through the sealing ring. After helium leak detection test is completed, the sealing ring needs to be removed (the sealing ring is easy to assemble, but difficult to remove). This method of assembling sealing ring on the external thread joint of P+T sensor wastes time in assembling and removing the sealing ring, and the thread of the external thread joint of P+T sensor is easily damaged (slippery) during the assembling and removing process. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of leak detection joint for P+T sensor, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0006] A leak detection joint for P+T sensor, comprising

[0007] The base is provided with a first air inlet channel;

[0008] The adapter is fixed at the bottom of the base and is in sealed connection with the base, the adapter is provided with a second air inlet channel, the top of the second air inlet channel is in communication with the first air inlet channel, and the bottom of the second air inlet channel has an internal thread section for connecting with the external thread joint of P+T sensor;

[0009] The first sealing ring is embedded in the internal thread section.

[0010] Preferably, the adapter comprises a connecting plate, a boss extending from the middle of the connecting plate, the second air inlet channel penetrating through the connecting plate and the boss, and a plurality of first connecting holes formed on the connecting plate.

[0011] Preferably, an annular groove is formed on the bottom surface of the base, and a second sealing ring is placed in the annular groove.

[0012] Preferably, a plurality of third connecting holes are formed on the base for connecting with the helium detection equipment through bolts.

[0013] The utility model provides a leak detection joint for P+T sensor has the following beneficial effects:

[0014] Since the first sealing ring is embedded in the inner threaded section, the leak detection joint does not need to assemble a sealing ring on the outer threaded joint of the P+T sensor when assembling the P+T sensor, and does not need to remove the sealing ring from the outer threaded joint after the helium leak detection test is completed, which saves time and effort and also avoids the situation that the threads of the outer threaded joint of the P+T sensor are damaged due to the assembly and removal of the sealing ring, thereby ensuring the quality of the P+T sensor. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a structural schematic view of the leak detection joint of the utility model;

[0016] Figure 2 Fig. 2 is a structural schematic view of the adapter of the utility model;

[0017] Figure 3 Fig. 3 is a structural schematic view of the base of the utility model.

[0018] In the figure: 1, base; 101, first air inlet channel; 102, second connecting hole; 103, annular groove; 104, third connecting hole; 2, adapter; 201, second air inlet channel; 202, inner threaded section; 21, connecting plate; 22, boss; 203, first connecting hole; 3, first sealing ring; 4, second sealing ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings of the utility model.

[0020] The technical solutions of the present application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality of" means two or more, unless otherwise explicitly specified. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Embodiments

[0024] Reference Figures 1-2 A leak detection joint for a P+T sensor, comprising

[0025] A base 1 is provided with a first air inlet channel 101, and the base 1 is used to be fixed at the bottom of a helium detection device;

[0026] An adapter 2 is fixed at the bottom of the base 1 and is in sealing connection with the base 1, and the adapter 2 is provided with a second air inlet channel 201, the top of the second air inlet channel 201 is in communication with the first air inlet channel 101, and the bottom of the second air inlet channel 201 has an internal thread section 202 for connecting with an external thread joint of a P+T sensor;

[0027] The first sealing ring 3 is embedded in the inner threaded section 202.

[0028] In use, the outer threaded connector of the P+T sensor is screwed with the inner threaded section 202, and the first sealing ring 3 is used to seal the connection. After the connection is completed, the P+T sensor can be injected with helium for helium leak testing. The helium finally enters the helium testing equipment through the second gas inlet channel 201 and the first gas inlet channel 101, and the test results are obtained through the helium testing equipment.

[0029] Since the first sealing ring 3 is embedded in the inner threaded section 202, the sealing ring does not need to be assembled on the outer threaded connector of the P+T sensor when the P+T sensor is assembled, and the sealing ring does not need to be removed from the outer threaded connector after the helium leak testing is completed, which saves time and effort, and also avoids the situation that the threads of the outer threaded connector of the P+T sensor are damaged due to the assembly and removal of the sealing ring, thereby ensuring the quality of the P+T sensor.

[0030] In a specific embodiment, the adapter 2 includes a connecting plate 21, a boss 22 extending from the middle of the connecting plate 21, and the second gas inlet channel 201 penetrating through the connecting plate 21 and the boss 22. A plurality of first connecting holes 203 are formed in the connecting plate 21, and a plurality of second connecting holes 102 corresponding to the first connecting holes 203 are formed in the base 1. The adapter 2 and the base 1 can be connected by bolts through the first connecting holes 203 and the second connecting holes 102, which facilitates installation and disassembly.

[0031] In a specific embodiment, an annular groove 103 is formed in the bottom surface of the base 1, and a second sealing ring 4 is placed in the annular groove 103. The second sealing ring 4 can be used to seal the space between the adapter 2 and the base 1 to prevent gas leakage.

[0032] In a specific embodiment, a plurality of third connecting holes 104 are formed in the base 1 for connecting with the helium testing equipment by bolts.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones. Such modifications or replacements do not change the essence of the corresponding technical solutions, and do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A leak detection connector for a P+T sensor, characterized by: include The base is provided with a first air inlet passage; an adapter fixed to the bottom of the base and sealed therewith, the adapter penetrating a second air inlet passage, the top of the second air inlet passage communicating with the first air inlet passage, the bottom of the second air inlet passage having an internal threaded section for connecting to the external threaded connector of the P+T sensor; The first sealing ring is embedded in the internal thread section.

2. A leak detection joint for a P+T sensor according to claim 1, characterized in that: The adapter includes a connecting plate, a boss extending from the middle of the connecting plate, the second air inlet channel passes through the connecting plate and the boss, a plurality of first connecting holes are opened on the connecting plate, and a plurality of second connecting holes corresponding to the first connecting holes are opened on the base.

3. The leak detection connector for a P+T sensor according to claim 1, characterized in that: An annular groove is formed on the bottom surface of the base, and a second sealing ring is placed in the annular groove.

4. The leak detection connector for a P+T sensor according to claim 1, characterized in that: The base is provided with a plurality of third connection holes for connecting with the helium detection equipment via bolts.

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