CN215065099U

CN215065099U - Helium mass spectrometer leak detection test fixture device for electronic expansion valve

Info

Publication number: CN215065099U
Application number: CN202120331866.6U
Authority: CN
Inventors: 王英杰; 冯科; 夏滔
Original assignee: Shanghai Deyi Electromechanical Co Ltd
Current assignee: Shanghai Deyi Electromechanical Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-12-07
Anticipated expiration: 2031-02-05

Abstract

The utility model belongs to the field of mass spectrum leak detection test, in particular to a helium mass spectrum leak detection test fixture device for an electronic expansion valve, which comprises a fixture base body, a fixture inner core and a reset spring, wherein the inner side of the fixture base body is provided with a cavity, the bottom side of the cavity is provided with a clamping cylinder body, and the top side of the cavity is provided with the fixture inner core and the reset spring; the clamping cylinder body is provided with a detection gas inlet interface and a clamping gas inlet interface, wherein the clamping gas inlet interface is arranged on one side of the inner cavity of the tool base body and communicated with an external gas source; the shaft end of the clamping cylinder body is connected with the tool inner core, and the tool inner core can move upwards when an air source of the clamping cylinder body is loaded. The utility model discloses a device structure can realize the high-speed joint of straight tube interface, stable sealing, and device repeatability, stability are better.

Description

Helium mass spectrometer leak detection test fixture device for electronic expansion valve

Technical Field

The utility model relates to a mass spectrum leak hunting test field specifically is a be used for electronic expansion valve helium mass spectrum leak hunting test fixture device, and this electronic expansion valve helium mass spectrum leak hunting test fixture device is applicable to electronic expansion valve helium mass spectrum leak hunting test time, and the product is taken over and test system's high-speed joint.

Background

An electronic expansion valve is a throttling element that can be programmed to control the flow of refrigerant into a refrigeration unit. On some occasions with severe load change or wide operation condition range, the traditional throttling elements (such as capillary tubes, thermal expansion valves and the like) cannot meet the requirements on comfort and energy conservation, and the electronic expansion valve is combined with the variable capacity technology of the compressor to be more and more widely applied. The electronic expansion valve as a novel control element becomes an important link of refrigeration system intellectualization, is also an important means and guarantee for really realizing refrigeration system optimization, and is applied to more and more fields.

The cold distribution industry spare part is connected and is used copper pipe in a large number and link, along with the improvement to the leakproofness detection requirement in the industry, the mill needs a large amount of online short-term test of spare part, and helium mass spectrum check out test set is extremely high to the leakproofness of tool equipment, stability, and convenient maintenance requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for electronic expansion valve helium mass spectrum leak hunting test fixture device to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a helium mass spectrometer leak detection test fixture device for an electronic expansion valve comprises a fixture base body, a fixture inner core and a return spring, wherein a cavity is arranged on the inner side of the fixture base body, a clamping cylinder body is arranged on the bottom side of the cavity, and the fixture inner core and the return spring are arranged on the top side of the cavity; the clamping cylinder body is provided with a detection gas inlet interface and a clamping gas inlet interface, wherein the clamping gas inlet interface is arranged on one side of the inner cavity of the tool base body and communicated with an external gas source; the shaft end of the clamping cylinder body is connected with the tool inner core, and the tool inner core can move upwards when an air source of the clamping cylinder body is loaded.

Preferably, the top side in the tool base body cavity is further provided with a return spring and a sealing rubber ring, the sealing rubber ring corresponds to the tool inner core, and the return spring is sleeved on the outer side of the sealing rubber ring.

Preferably, the tool base body is further provided with a nut, the inner side of the nut can be connected with a flaring connecting pipe, the flaring connecting pipe is a tested product interface, and the flaring connecting pipe extends into the inner side of the cavity of the tool base body.

Compared with the prior art, the beneficial effects of the utility model are that:

the device structure of the utility model can realize the quick connection and stable sealing of the straight pipe interface, when the device is used, the flaring connecting pipe is inserted into the device, clamping gas is loaded, the inner core of the workpiece moves upwards under the action of the clamping gas, and the sealing rubber ring is compacted, thereby completing the stable sealing of the connecting pipe of the product to be detected; the device is simple to operate, reliable in sealing, capable of realizing online detection of products with the highest detection gas pressure reaching 4.5Mpa, and good in repeatability and stability.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is the utility model discloses quick connecting device structure chart when being taken over the access by the product of being surveyed.

In the figure: 1. a tooling base body; 2. tooling inner cores; 3. clamping the cylinder block; 301. detecting a gas inlet interface; 302. clamping an air inlet interface; 4. a return spring; 5. sealing the rubber ring; 6. a nut; 7. and (5) flaring and connecting the pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a helium mass spectrometer leak detection test fixture device for an electronic expansion valve comprises a tool base body 1, a tool inner core 2 and a reset spring 4, wherein a cavity is arranged on the inner side of the tool base body 1, a clamping cylinder body 3 is arranged on the bottom side of the cavity, and the tool inner core 2 and the reset spring 4 are arranged on the top side of the cavity; the clamping cylinder body 3 is provided with a detection air inlet interface 301 and a clamping air inlet interface 302, wherein the clamping air inlet interface 302 is arranged on one side of the inner cavity of the tool base body 1 and is communicated with an external air source; the shaft end of the clamping cylinder body 3 is connected with the tooling inner core 2, and the tooling inner core 2 can move upwards when an air source of the clamping cylinder body 3 is loaded.

In this embodiment, 1 intracavity top side of frock base member still is equipped with reset spring 4 and sealed rubber ring 5, and sealed rubber ring 5 corresponds with frock

inner core

2, and 5 outsides of sealed rubber ring are located to reset spring 4 cover.

In this embodiment, the tooling base body 1 is further provided with a nut 6, the inner side of the nut 6 can be connected with a flaring connection pipe 7, the flaring connection pipe 7 is a tested product interface, and the flaring connection pipe 7 extends into the inner side of the cavity of the tooling base body 1.

When the device of the utility model is used, the flaring connecting pipe 7 is inserted into the device, clamping gas is loaded, the tool inner core 2 moves upwards under the action of the clamping gas, and the sealing rubber ring 5 is compressed, thereby completing the stable sealing of the connecting pipe of the product to be detected; the device is simple to operate, reliable in sealing, capable of realizing online detection of products with the highest detection gas pressure reaching 4.5Mpa, and good in repeatability and stability.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The helium mass spectrometer leak detection test fixture device for the electronic expansion valve is characterized by comprising a fixture base body (1), a fixture inner core (2) and a reset spring (4), wherein a cavity is formed in the inner side of the fixture base body (1), a clamping cylinder body (3) is arranged at the bottom side of the cavity, and the fixture inner core (2) and the reset spring (4) are arranged at the top side of the cavity; the clamping cylinder body (3) is provided with a detection air inlet interface (301) and a clamping air inlet interface (302), wherein the clamping air inlet interface (302) is arranged on one side of the inner cavity of the tool base body (1) and communicated with an external air source; the shaft end of the clamping cylinder body (3) is connected with the tooling inner core (2), and the tooling inner core (2) can move upwards when an air source of the clamping cylinder body (3) is loaded.

2. The clamp device for the helium mass spectrometer leak detection test of the electronic expansion valve as claimed in claim 1, wherein: the top side in frock base member (1) intracavity still is equipped with reset spring (4) and sealed rubber ring (5), and sealed rubber ring (5) correspond with frock inner core (2), and the sealed rubber ring (5) outside is located in reset spring (4) cover.

3. The clamp device for the helium mass spectrometer leak detection test of the electronic expansion valve as claimed in claim 1, wherein: still be equipped with nut (6) on frock base member (1), and this nut (6) inboard can be connected with flaring and take over (7), and flaring is taken over (7) and is surveyed the product interface, and flaring is taken over (7) and is stretched into the cavity inboard of frock base member (1).