Helium recovery device and helium leak detection system

Abstract

The utility model provides a helium recovery device and a helium leak detection system, the helium recovery device is used for recovering helium released by a helium leak detection instrument, the helium recovery device comprises an exhaust system, the exhaust system comprises an exhaust pipeline and an exhaust fan, the exhaust fan is arranged at one end of the exhaust pipeline, and the exhaust fan rotates to drive environmental gas to be exhausted from the exhaust pipeline; the signal receiving unit is communicated with the helium leak detector and is used for acquiring a signal that the helium leak detector stops or starts to release helium in real time; and the control unit is connected with the exhaust fan and the signal receiving unit, and the signal receiving unit sends an electric signal to the control unit after receiving the signal from the helium leak detector. According to the utility model, through the helium recovery device and the helium leak detector which work in cooperation with each other, the problems of accuracy reduction, equipment damage and efficiency reduction caused by helium accumulation during use of helium leak detection equipment in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment leak detection, in particular to a helium recovery device and a helium leak detection system. Background Art

[0002] A helium leak detector is a specialized leak detection instrument that uses helium as the leak detector gas. It features stable performance and high sensitivity. Negative pressure leak detection involves connecting the test component to the detector's detection port and continuously spraying tracer gas into the suspected leak hole with a spray gun. The tracer gas enters the leak hole and is detected by the detector. This method is commonly used for leak detection in electronic equipment casings, high-voltage switching tubes, zinc oxide, lightning arresters, and other equipment.

[0003] In the precision instrumentation industry or medical equipment industry, the production of many products requires a constant temperature and humidity environment. These environments are usually relatively closed and have relatively long air circulation. When a helium leak detector is used in such an environment, the helium gas ejected from the helium gun to detect whether the corresponding product is leaking will gradually accumulate in the environment. When the helium accumulates to a certain concentration, it will affect the accuracy of the leak detector and even cause damage to the equipment. Furthermore, due to the problem of helium exhaust gas diffusion and accumulation, the equipment usually has to be shut down for about an hour after working for three to four hours, which greatly reduces production efficiency and increases product production costs. Therefore, a helium leak detection system is needed to promptly solve the problem of helium accumulation. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a helium recovery device and a helium leak detection system to solve the problems of decreased accuracy, equipment damage and reduced efficiency caused by helium accumulation in the prior art helium leak detection equipment during use.

[0005] In order to solve the above technical problems, the utility model provides a helium recovery device for recovering helium released by a helium leak detector, comprising:

[0006] An exhaust system, the exhaust system comprising an exhaust pipeline and an exhaust fan, the exhaust fan being disposed at one end of the exhaust pipeline and rotating to drive ambient gas to be discharged from the exhaust pipeline;

[0007] a signal receiving unit, the signal receiving unit communicating with the helium leak detector and acquiring in real time a signal indicating that the helium leak detector stops or starts releasing helium;

[0008] A control unit is connected to the exhaust fan and a signal receiving unit. After receiving a signal from the helium leak detector, the signal receiving unit sends an electrical signal to the control unit. When the control unit receives a signal from the helium leak detector to start releasing helium, the exhaust fan is turned off to prevent the discharged helium from interfering with the leak detection work. When the control unit receives a signal from the helium leak detector to stop releasing helium, after a preset time delay, the control unit controls the exhaust fan to turn on to continuously discharge the ambient gas mixed with helium, wherein the preset time delay is used to allow the helium leak detector to complete the helium leak detection.

[0009] As a more preferred embodiment, the helium recovery device includes a basic frame, and the exhaust system, signal receiving unit and control unit are all arranged on the basic frame, and the basic frame provides support for each component.

[0010] As a more preferred method, an exhaust switch electrically connected to the exhaust fan for opening and closing the exhaust fan is provided on the outside of the basic frame. The exhaust switch can conveniently control the opening or closing of the exhaust fan independently, and the exhaust fan can be opened or closed as needed, making the control of the exhaust fan more flexible.

[0011] As a more preferred embodiment, the bottom of the basic frame is provided with rollers for facilitating the movement of the helium recovery device.

[0012] As a more preferred embodiment, the roller is a universal wheel, which can more conveniently push the helium recovery device.

[0013] As a more preferred embodiment, a lighting fixture is provided on the basic frame, and the lighting fixture is used for lighting, so that the operator can observe the working status of the helium recovery device in a timely manner.

[0014] As a more preferred method, a lighting switch electrically connected to the lighting fixture for turning the lighting fixture on and off is provided on the outside of the basic frame. The lighting switch can conveniently control the starting and closing of the lighting switch independently, and the lighting switch can be turned on or off as needed.

[0015] As a more preferred embodiment, an air duct with a hollow groove is provided on the basic frame, and the air duct is connected to the exhaust fan, so that the ambient gas can be discharged more smoothly.

[0016] In order to solve the above problems, the present invention also provides a helium leak detection system, comprising:

[0017] The helium recovery device mentioned above;

[0018] A helium leak detector is in communication with the signal receiving unit.

[0019] As a more preferred embodiment, the helium leak detector includes a helium gun and a flow sensor arranged in the nozzle of the helium gun. According to the flow change of the helium gun detected by the flow sensor, the current state of the helium leak detector stopping or starting to release helium is obtained, and the signal is transmitted to the signal receiving unit of the helium recovery device for communication. The flow sensor can be used to intuitively and accurately detect the current working state of the helium leak detector, making the communication between the helium recovery device and the helium leak detector more efficient.

[0020] As described above, the helium recovery device and helium leak detection system of the present invention have the following beneficial effects: when the helium recovery device of the present invention is in use, the other end of the exhaust pipe is connected to the exhaust gas treatment pipe, and then the helium recovery device is started, the exhaust fan starts to work, and the ambient gas is discharged from the exhaust pipe. At this time, the helium leak detector is turned on to release helium to start the leak detection operation. The signal receiving unit receives the signal from the helium leak detector and sends the signal to the control unit. The control unit turns off the exhaust fan to avoid the exhaust of helium interfering with the leak detection work. When the helium leak detector stops releasing helium, the signal receiving unit receives the signal from the helium leak detector and sends the signal to the control unit. The control unit delays for a preset time to wait for the helium leak detector to complete After the leak detection is completed, the exhaust fan is turned on to continuously discharge the ambient gas mixed with helium until the helium recovery device is turned off or the helium leak detector starts to release helium; the preset delay time for the control unit to wait for the helium leak detector to complete the leak detection is related to the model of the helium leak detector; the helium leak detection system of the utility model integrates the helium recovery function while being able to realize the leak detection operation, and the leak detection operation and the helium recovery work together without interfering with each other, which not only ensures the high efficiency of the leak detection operation but also ensures that helium will not accumulate in large quantities; the helium recovery device and the helium leak detection system of the utility model solve the problems of reduced accuracy, equipment damage and reduced efficiency caused by helium accumulation in the use of helium leak detection equipment in the prior art through the helium recovery device and the helium leak detector that work together. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of the helium recovery device of the present invention;

[0022] Figure 2 Shown is a schematic diagram of a helium leak detection system of the present invention.

[0023] Component number description

[0024] 1 Exhaust pipe

[0025] 2 exhaust fans

[0026] 3 Basic Framework

[0027] 4 Lighting fixtures

[0028] 5 Exhaust switch

[0029] 6 Light switch

[0030] 7 Scroll Wheel

[0031] 8 air ducts

[0032] 9 Power port

[0033] 10 Helium leak detector

[0034] 11 Helium air gun

[0035] 12 Flow sensor

[0036] 13 Helium gas pipeline DETAILED DESCRIPTION

[0037] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0038] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model. Therefore, they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the efficacy and purpose that can be achieved by the utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit this application. Spatial-related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," "holding," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, or operations is inherently mutually exclusive in some way.

[0041] like Figure 1 As shown, the present invention provides a helium recovery device for recovering helium released by a helium leak detector 10, comprising:

[0042] An exhaust system, comprising an exhaust pipe 1 and an exhaust fan 2, wherein the exhaust fan 2 is disposed at one end of the exhaust pipe 1 and rotates to discharge ambient gas from the exhaust pipe 1;

[0043] a signal receiving unit, which communicates with the helium leak detector 10 and obtains in real time a signal indicating that the helium leak detector 10 stops or starts releasing helium;

[0044] A control unit is connected to the exhaust fan 2 and a signal receiving unit. After receiving a signal from the helium leak detector 10, the signal receiving unit sends an electrical signal to the control unit. When the control unit receives a signal from the helium leak detector 10 to start releasing helium, the exhaust fan 2 is turned off to prevent the discharged helium from interfering with the leak detection work. When the control unit receives a signal from the helium leak detector 10 to stop releasing helium, after a preset time delay, the control unit controls the exhaust fan 2 to turn on and continuously discharge the ambient gas mixed with helium, wherein the preset time delay is used to allow the helium leak detector 10 to complete the helium leak detection.

[0045] When the helium recovery device of the present invention is in use, the other end of the exhaust pipe 1 is connected to the exhaust gas treatment pipeline, and then the helium recovery device is started, and the exhaust fan 2 starts to work to discharge the ambient gas from the exhaust pipe 1. At this time, the helium leak detector 10 is turned on to release helium to start the leak detection operation. The signal receiving unit receives the signal from the helium leak detector 10 and sends the signal to the control unit. The control unit turns off the exhaust fan 2 to avoid the exhaust of helium interfering with the leak detection work. When the helium leak detector 10 stops releasing helium, the signal receiving unit receives the signal from the helium leak detector 10. signal and sends the signal to the control unit. The control unit delays for a preset time until the helium leak detector 10 completes the leak detection and then turns on the exhaust fan 2 to continuously discharge the ambient gas mixed with helium until the helium recovery device is turned off or the helium leak detector starts to release helium. The preset delay time for the control unit to wait for the helium leak detector 10 to complete the leak detection is related to the specific model of the helium leak detector 10. In this embodiment, the specific model of the helium leak detector 10 is Inforcon UL1000, which has a very fast detection time and completes the detection within milliseconds. The reserved delay time is only one second.

[0046] In this embodiment, if Figure 1 As shown, the helium recovery device includes a basic frame 3, and the exhaust system, signal receiving unit and control unit are all arranged on the basic frame 3, and the basic frame 3 provides support for each component; further, in this embodiment, as shown Figure 1 As shown, the base frame 3 is a frame structure with three sides blocked, and a top cavity for accommodating the exhaust system, the signal receiving unit and the control unit is provided on the top of the frame structure. One end of the exhaust pipe 1 is connected to the exhaust fan 2 provided in the top cavity, and the other end is led out from the top cavity; further, in this embodiment, as shown Figure 1 As shown, a power interface 9 is also provided on the outside of the basic frame 3 to facilitate power supply.

[0047] In this embodiment, if Figure 1 As shown, an exhaust switch 5 electrically connected to the exhaust fan 2 for opening and closing the exhaust fan 2 is provided on the outside of the basic frame 3. The exhaust switch 5 can conveniently control the opening or closing of the exhaust fan 2 independently, and the exhaust fan can be opened or closed as needed, making the control of the exhaust fan more flexible.

[0048] In this embodiment, if Figure 1 As shown, the bottom of the basic frame 3 is provided with rollers 7 for facilitating the movement of the helium recovery device.

[0049] In this embodiment, if Figure 1 As shown, the roller 7 is a universal wheel, which can more conveniently push the helium recovery device.

[0050] In this embodiment, if Figure 1 As shown, the basic frame 3 is provided with a lighting fixture 4, which is used for lighting, so that the operator can observe the working status of the helium recovery device in time. In this embodiment, the lighting fixture 4 adopts an LED lamp. LED has the advantages of high efficiency and energy saving, long service life, healthy light without radiation, and green environmental protection. Specifically, it can be an LED bulb lamp, LED spotlight, LED wall lamp, LED floodlight, LED candle lamp, LED track lamp, LED fluorescent lamp, LED tunnel lamp, LED panel lamp, LED street lamp, etc., which is not limited in this embodiment.

[0051] In this embodiment, if Figure 1 As shown, a lighting switch 6 electrically connected to the lighting fixture 4 for turning the lighting fixture 4 on and off is provided on the outside of the basic frame 3. The lighting switch 6 can be conveniently and independently controlled to turn on or off the lighting switch 6, and the lighting switch 6 can be turned on or off as needed.

[0052] Furthermore, in this embodiment, Figure 1 As shown, the exhaust switch 5 and the lighting switch are arranged at the top of the basic frame 3 and are arranged side by side for easy operation.

[0053] In this embodiment, if Figure 1 As shown, the basic frame 3 is provided with an air duct 8 with a hollow groove, and the air duct 8 is connected to the exhaust fan 2. The air duct 8 can make the ambient gas discharged more smoothly; at the same time, because the basic frame 3 is blocked on three sides and one side is open, the air duct 8 with a hollow groove is arranged in the middle of the basic frame 3, so that the ambient gas enters the helium recovery device from the open side of the basic frame 3 and is discharged from the exhaust pipe 1 of the top cavity, further improving the exhaust efficiency.

[0054] In order to solve the above problems, Figure 2 As shown, the utility model also provides a helium leak detection system, comprising:

[0055] The helium recovery device mentioned above;

[0056] A helium leak detector 10 is configured to communicate with the signal receiving unit.

[0057] The helium leak detection system of the utility model integrates a helium recovery function while being able to realize leak detection operation. The leak detection operation and the helium recovery cooperate with each other without interfering with each other, which ensures the high efficiency of the leak detection operation and prevents the accumulation of helium in large quantities.

[0058] Furthermore, in this embodiment, the helium leak detector 10 is arranged at the bottom of the basic frame 3, and the helium air gun 11 is connected to the helium leak detector 10 through a helium gas pipe 13. At the same time, because the basic frame 3 is blocked on three sides and one side is open, the helium air gun 11 can be easily taken out to perform leak detection operations.

[0059] In this embodiment, if Figure 2 As shown, the helium leak detector 10 includes a helium gun 11 and a flow sensor 12 arranged in the nozzle of the helium gun 11. According to the flow change of the helium gun 11 detected by the flow sensor 12, the current state of the helium leak detector 10 stopping or starting to release helium is obtained, and the signal is transmitted to the signal receiving unit of the helium recovery device for communication. The flow sensor 12 can be used to intuitively and accurately detect the current working state of the helium leak detector 10, making the communication between the helium recovery device and the helium leak detector 10 more efficient.

[0060] Furthermore, in this embodiment, the working steps of the helium leak detection system include:

[0061] S01: Connect the power interface 9, and turn on the exhaust switch 5 and the lighting switch 6. The exhaust fan 2 and the lighting fixture 4 start working. The exhaust fan 2 continuously discharges ambient gas through the exhaust pipe 1.

[0062] S02: Turn on the helium leak detector 10 and use the helium air gun 11 to spray air toward the device to be leak tested;

[0063] S03: The flow sensor 12 detects the flow of helium and sends a signal to the signal receiving unit. The signal receiving unit transmits the received signal to the control unit, and the control unit controls the exhaust fan 2 to be turned off.

[0064] S04: The flow sensor 12 detects that the helium gas stops flowing and sends a signal to the signal receiving unit. The signal receiving unit transmits the received signal to the control unit. The control unit delays for a period of time until the helium leak detector completes the leak detection and then controls the exhaust fan 2 to turn on.

[0065] S05: After the leak detection operation is completed, the helium leak detector 10 is turned off and the power supply is disconnected.

[0066] In summary, the helium recovery device and helium leak detection system of the present invention, through the coordinated operation of the helium recovery device and the helium leak detector 10, address the problems of prior art helium leak detection equipment, such as reduced accuracy, equipment damage, and decreased efficiency, caused by helium accumulation during use. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and possesses high industrial value.

[0067] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A helium recovery device for recovering helium released by a helium leak detector (10), characterized in that: include: An exhaust system, the exhaust system comprising an exhaust pipeline (1) and an exhaust fan (2), the exhaust fan (2) being arranged at one end of the exhaust pipeline (1), and the exhaust fan (2) rotating to drive ambient gas to be discharged from the exhaust pipeline (1); a signal receiving unit, the signal receiving unit communicating with the helium leak detector (10) and acquiring in real time a signal indicating that the helium leak detector (10) stops or starts releasing helium; A control unit, the control unit being connected to the exhaust fan (2) and a signal receiving unit, the signal receiving unit sending an electrical signal to the control unit after receiving a signal from the helium leak detector (10); When the control unit receives a signal from the helium leak detector (10) to start releasing helium, the exhaust fan (2) is turned off to prevent the discharged helium from interfering with the leak detection work. When the control unit receives a signal from the helium leak detector (10) to stop releasing helium, after a preset time delay, the control unit controls the exhaust fan (2) to open and continuously discharge the ambient gas mixed with helium, wherein the preset time delay is used to allow the helium leak detector (10) to complete the helium leak detection.

2. The helium recovery device according to claim 1, characterized in that: The helium recovery device comprises a basic frame (3), and the exhaust system, the signal receiving unit and the control unit are all arranged on the basic frame (3).

3. The helium recovery device according to claim 2, characterized in that: An exhaust switch (5) electrically connected to the exhaust fan (2) and used to open and close the exhaust fan (2) is provided on the outside of the basic frame (3).

4. The helium recovery device according to claim 2, characterized in that: The bottom of the basic frame (3) is provided with rollers (7) for facilitating the movement of the helium recovery device.

5. The helium recovery device according to claim 4, characterized in that: The roller (7) is a universal wheel.

6. The helium recovery device according to claim 2, characterized in that: A lighting fixture (4) is provided on the basic frame (3).

7. The helium recovery device according to claim 6, characterized in that: A lighting switch (6) electrically connected to the lighting fixture (4) and used to turn the lighting fixture (4) on and off is provided on the outside of the basic frame (3).

8. The helium recovery device according to claim 2, characterized in that: An air duct (8) with a hollow groove is provided on the basic frame (3), and the air duct (8) is connected to the exhaust fan (2).

9. A helium leak detection system, characterized in that: include: The helium recovery device according to any one of claims 1 to 8; A helium leak detector (10) is provided, wherein the helium leak detector (10) communicates with the signal receiving unit.

10. The helium leak detection system according to claim 9, characterized in that: The helium leak detector (10) comprises a helium air gun (11) and a flow sensor (12) arranged in a nozzle of the helium air gun (11). According to the flow change of the helium air gun (11) detected by the flow sensor (12), the current state of the helium leak detector (10) stopping or starting to release helium is obtained, and the signal is transmitted to the signal receiving unit of the helium recovery device for communication.

Images