CN202994400U - Box gas leakage detector - Google Patents

Abstract

The utility model discloses a box gas leakage detector, which comprises a support plate and an air path system on it. The support plate is fixed on the box body equipped with a sealing structure. pressure filter, flow meter and flow control valve, the gas input port of the pressure regulating filter is connected to an external gas source, the flow meter is connected to the pressure regulating filter and the flow control valve, and the support plate is provided with a valve connected to the flow control valve. air intake. The utility model can detect the flow rate of air leakage in the box under a specific air pressure, and has the advantages of simple structure, convenient use, reliability and the like.

Description

Box gas leak detector

technical field

The utility model relates to the field of testing instruments and meters, in particular to a box gas leakage detector.

Background technique

Box parts are important structures of mechanical equipment and many components, as well as installation substrates, such as gearboxes, engine blocks, etc. The air tightness of the box needs to be tested regularly. The gas path system is injected into the inside of the box, and the leakage of the box under test can be determined by observing the change of the gas source pressure. In these schemes, there are problems: first, only through the change of gas pressure, to judge whether there is leakage, without quantifying the amount of gas leakage; There is a leak in the tested box. At this time, due to the pressure loss in the gas circuit, the pressure value detected by the pressure gauge cannot reflect the steady-state pressure in the box; the third problem is that the detection is laborious and time-consuming.

Utility model content

The technical problem to be solved by the utility model is to provide a method for effectively judging whether there is a leak in the box body when detecting the airtightness of the box body, which is easy to form a misjudgment, and the detection is laborious and time-consuming. There is a leaking box gas leak detector.

The technical scheme that the utility model solves its technical problem adopts is:

A box gas leakage detector is provided, including a support plate and an air circuit system on it, the support plate is fixed on a box body equipped with a sealing structure, and the gas circuit system includes a support plate fixed on the support plate A pressure regulating filter, a flow meter and a flow control valve, the gas input port of the pressure regulating filter is connected to an external gas source, and the flow meter is connected to the pressure regulating filter and the flow control valve. An air inlet connected to the flow control valve is provided on the support plate.

In the box gas leakage detector described in the utility model, the detector also includes an independent pressure gauge, which is installed on the support plate, and the independent pressure gauge is connected with an extended hollow rod, and the extended hollow rod passes through the support board into the box interior.

In the box gas leakage detector described in the utility model, the detector also includes two handles installed on both sides of the support plate.

In the box gas leakage detector described in the utility model, the upper end of the flow meter is fixedly connected to the support plate through the support of the output end, and the lower end of the flow meter is fixedly connected to the support plate through the support of the input end.

In the box gas leakage detector described in the utility model, the flow control valve is installed on the support of the output end.

Using the utility model has the following beneficial effects: the utility model box gas leakage detector includes a support plate and the gas circuit system on it, and the external gas source passes through the pressure regulating filter, flow meter and flow control valve of the gas circuit system , into the box body through the air inlet hole on the support plate, wherein the flow meter can monitor the air leakage flow rate of the gas in the box under test at a specific pressure. The utility model has the advantages of simple structure, convenient use, and reliability.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is the working schematic diagram of the box gas leakage detector of the embodiment of the utility model;

Fig. 2 is a top view structural diagram of the gas leakage detector of the embodiment of the utility model;

Fig. 3 is an enlarged sectional view along the A-A direction of Fig. 1 according to the embodiment of the present invention;

Fig. 4 is the enlarged sectional view of Fig. 1 along the B-B direction of the utility model embodiment;

Fig. 5 is an enlarged sectional view along the C-C direction of Fig. 1 of the embodiment of the present invention;

Fig. 6 is an enlarged cross-sectional view along the D-D direction of Fig. 1 according to the embodiment of the present invention.

In the picture:

1 handle 2 pipe connector

3 Regulating filter 4 Flow meter

5 pipe joint 6 flow control valve

7 bolts 8 pipe joints

10 independent pressure gauges 20 screws

23 support plate 25 hose

26 pipe joint 27 output end support

28 sealing ring 29 input end support

30 extended hollow rod 31 screw

32 Adapter 34 Spring Washer

35 sealing ring 36 pressure ring

37 inner ring 38 outer ring

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In a preferred embodiment of the present utility model, as shown in FIG. 1 , the box gas leakage detector includes a support plate 23 and the gas circuit system on it. The support plate 23 is an installation base on which other components are installed. The support plate 23 is fixed on the box with a sealed structure (that is, the box to be tested, not shown in the figure), and the gas circuit system includes a pressure regulating filter 3, a flow meter 4 and a flow rate all fixed on the support plate 23. The control valve 6, the gas input port of the pressure regulating filter 3 is connected to the external gas source (the gas input port can be connected to the external gas source through the pipe joint 2 and the hose), the flow meter 4 is connected to the pressure regulating filter 3, and the flow control valve 6 are all in communication, and the support plate 23 is provided with an air inlet (not shown in the figure) in communication with the flow control valve 6 . The flow meter 4 can monitor the gas leakage in the tested box. In one embodiment of the present invention, the flow meter 4 can be a metal float flow meter.

In the embodiment of the utility model, the support plate 23 is fixed on the tested box with a sealed structure, and the external air source passes through the pressure regulating filter 3 of the air circuit system, the input end support 29, the flow meter 4, the output End support 27, flow control valve 6, and through the air inlet hole on the support plate 23 into the measured box.

As shown in Figure 1, Figure 2 and Figure 4, the flowmeter 4 is connected to the output end support 27 and the input end support 29 through bolts 7, wherein a sealing ring 28 is arranged on the joint surface, and the output end support 27 and the input end support 29 are connected by screws fixed on the support plate 23. Install the pipe joint 8 on the support 29 of the input end (the pipe joint 8 can adopt a lock female type right-angle terminal pipe joint), and connect the hose 25 to the pressure regulating filter 3 . The pressure regulating filter 3 is fixed on the support plate 23 by screws 20, spring washers and washers. A flow control valve 6 is installed on the support 27 at the output end, and the flow control valve 6 is connected to the support plate 23 through the pipe joint 5 (the pipe joint 5 can adopt a lock female type right-angle terminal pipe joint), the hose and the pipe joint 26 to form a A hole from the pressure regulating filter 3 to the tested box body. The pressure regulating valve and/or the flow control valve 6 of the pressure regulating filter 3 can be slowly adjusted to prevent the flowmeter 4 from being damaged due to sudden high-pressure gas impact. The detector of the embodiment of the utility model can detect the flow rate of air leakage in the box under a specific air pressure, and has the advantages of simple structure, convenient use, and reliability.

The utility model embodiment box gas leakage detector also includes an independent pressure gauge 10, as shown in Figure 1 and Figure 5, which is installed on the support plate 23, the independent pressure gauge 10 is connected with an extended hollow rod 30, the extended hollow rod 30 passes through the support plate 23 and enters the inside of the box body, so as to monitor the pressure in the box body by extending the hollow rod 30, and obtain and detect the internal steady-state pressure. As shown in FIG. 5 , the independent pressure gauge 10 is connected to the adapter 32 through screws 31 and spring washers 34 , and the nuts fix the adapter 32 on the support plate 23 . The outer ring 38 is used to squeeze the inner ring 37, the pressure ring 36 and the three sealing rings 35, and clamp the independent pressure gauge 10 at the same time. A sealing structure is formed around the input port of the pressure gauge 10 to achieve a good sealing effect.

On the basis of the above embodiments, the tester also includes two handles 1 installed on both sides of the support plate 23 for easy movement and use. The handle 1 is fixed on the support plate 23 by screws, spring washers and sealing rings.

As shown in Figure 4, in the box gas leakage detector in the embodiment of the utility model, the upper end of the flowmeter 4 is fixedly connected to the support plate 23 through the output end support 27, and the lower end of the flowmeter 4 is connected to the support plate through the input end support 29. 23 fixed connections. In one embodiment of the utility model, the flow control valve 6 is connected to the support plate 23 through the pipe joint 5, the air pipe and the pipe joint 26 in sequence, and forms an air path through the air inlet hole and the box body.

It can be understood that the box gas leakage detector of the utility model can be changed to different flowmeters and pressure gauges according to different test requirements so as to improve the test range, and the contact between the detector and the box can be changed according to the shape of the box opening. The shape of the surface expands the test range of the box, and the structure is simple, and the operation is convenient and reliable.

When testing, fix the detector on the tested box with a sealed structure, adjust the pressure regulating valve of the pressure regulating filter 3 to the minimum, adjust the flow control valve 6 to the minimum, connect the high-pressure gas from the pipe joint 2, Increase the pressure regulating valve and flow control valve 6 step by step. At this time, the high pressure gas is injected into the measured box through the pressure regulating filter 3, the input end support 29, the flow meter 4, the output end support 27 and the flow control valve 6. When the adjustment meets the test requirements, the indicated value of the flowmeter 4 is the leakage of the tested box, and the indicated value of the independent pressure gauge 10 is the internal steady-state pressure of the tested box. Through these two values, it can be determined whether there is leakage in the tested box, or the gas leakage amount of the tested box under a specific pressure can be determined.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

Claims (5)

1. casing gas leakage detector, it is characterized in that, comprise back up pad and top air-channel system thereof, described back up pad is fixed on the casing that hermetically-sealed construction is housed, described air-channel system comprises pressure regulation filtrator, flowmeter and the flowrate control valve that all is fixed on described back up pad, the gas input port of described pressure regulation filtrator is connected with external air source, described flowmeter all is communicated with described pressure regulation filtrator, described flowrate control valve, and described back up pad is provided with the air admission hole that is communicated with described flowrate control valve.

2. casing gas leakage detector according to claim 1, it is characterized in that, this detector also comprises the independent pressure table, and it is arranged on back up pad, described independent pressure table connects one and extends hollow stem, and this prolongation hollow stem is passed described back up pad and entered described box house.

3. casing gas leakage detector according to claim 1, is characterized in that, this detector also comprises two handles, is arranged on described back up pad both sides.

4. casing gas leakage detector according to claim 1, is characterized in that, the upper end of described flowmeter is supported with described back up pad by output terminal and is fixedly connected with, and the lower end of described flowmeter is supported with described back up pad by input end and is fixedly connected with.

5. casing gas leakage detector according to claim 4, is characterized in that, described flowrate control valve is arranged in described output terminal supporting.

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