Detection gas recovery equipment

Abstract

The utility model discloses detection gas recovery equipment, relates to the technical field of detection gas filling, and aims to solve the problem that detection gas cannot be completely recovered in a detection gas recovery process. The detection gas recovery equipment comprises a tank body and a recovery device, and the tank body is used for storing and recovering detection gas; the recovery device is used for recovering detection gas and comprises a recovery assembly, a first pipeline, a first valve, a second pipeline, a second valve and an evacuation assembly, and the gas inlet end of the recovery assembly is used for being connected with a detection gas outlet of equipment to be detected; an inlet of the first pipeline communicates with the gas outlet end of the recovery assembly, and an outlet of the first pipeline communicates with an inlet of the tank body; the first valve is arranged on the first pipeline and used for opening or blocking the first pipeline. The inlet of the second pipeline is communicated with the gas outlet end of the recovery assembly; the outlet of the second pipeline is communicated with the inlet of the tank body; the second valve is arranged on the second pipeline and used for opening or blocking the second pipeline; the evacuation assembly is arranged on the second pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of detection gas filling, in particular to a detection gas recovery device. Background Art

[0002] Equipment with confined spaces such as pipes or cavities, such as heat exchangers and compressors, often requires leak testing to ensure the tightness of the equipment. This test typically involves injecting a mixture of helium and nitrogen into the equipment's confined space.

[0003] In the prior art, after the inspection of the equipment to be inspected is completed, the inspection gas is usually recovered and processed for secondary use. However, during the process of recovering the inspection gas, the inspection gas in the equipment to be inspected cannot be completely recovered, resulting in waste of the inspection gas, and the inspection gas will also affect the subsequent use of the equipment to be inspected.

[0004] Therefore, during the detection gas recovery process, the detection gas in the device to be detected cannot be completely recovered, resulting in waste of detection gas. In addition, the detection gas also affects the subsequent use of the device to be detected, which is a problem that needs to be solved. Utility Model Content

[0005] The embodiment of the present utility model provides a detection gas recovery device, which solves the problem that the detection gas in the device to be detected cannot be completely recovered during the detection gas recovery process, resulting in waste of detection gas, and the detection gas also affects the subsequent use of the device to be detected.

[0006] To achieve the above-mentioned purpose, the embodiment of the present utility model adopts the following technical scheme: a detection gas recovery device is provided, including: a tank body and a recovery device, the tank body is used to store and recover the detection gas; the recovery device is used to recover the detection gas, the recovery device includes: a recovery component, a first pipeline, a first valve, a second pipeline, a second valve and an exhaust component, the air inlet end of the recovery component is used to connect to the detection gas outlet of the equipment to be detected; the inlet of the first pipeline is connected to the air outlet end of the recovery component, and the outlet of the first pipeline is connected to the inlet of the tank body; the first valve is arranged on the first pipeline, for conducting or blocking the first pipeline; the inlet of the second pipeline is connected to the air outlet end of the recovery component, and the outlet of the second pipeline is connected to the inlet of the tank body; the second valve is arranged on the second pipeline, for conducting or blocking the second pipeline; the exhaust component is arranged on the second pipeline.

[0007] The present application provides a recovery device to recover the test gas within the device to be tested back into the tank. Specifically, when recovering the test gas within the device to be tested, the air inlet of the recovery component can be connected to the air outlet of the device to be tested, the first valve can be opened to connect the first pipeline, and the second valve can be closed to seal the second pipeline. At this point, the test gas within the device to be tested can flow through the recovery component to the first pipeline, and then flow through the first pipeline to be recovered into the tank.

[0008] After the test gas is recovered from the device to be tested through the first pipeline, the second valve can be opened to connect the second pipeline, and the first valve can be closed to block the first pipeline. At this time, the evacuation component is started to extract the test gas remaining in the device to be tested through the second pipeline into the tank.

[0009] In this way, the detection gas in the device to be detected can be recovered more thoroughly to reduce the waste of detection gas, and the residual amount of detection gas in the device to be detected can be reduced to reduce the impact of the residual detection gas on the device to be detected.

[0010] In some embodiments of the present application, the evacuation component includes an evacuation pump and a buffer tank. The evacuation pump is used to extract the detection gas in the device to be detected through the recovery component; the buffer tank is arranged between the evacuation pump and the recovery component.

[0011] In this way, after the detection gas in the device to be detected is recovered through the first pipeline, some residual detection gas still exists in the device to be detected. At this time, the second valve can be opened to connect the second pipeline.

[0012] The evacuation pump is then activated to recover the remaining test gas through the second pipeline back into the tank. Once the remaining test gas has been recovered, the second valve is closed to seal the second pipeline. This allows for more complete recovery of the remaining test gas within the device being tested.

[0013] By arranging a buffer tank in the second pipeline, the buffer tank can buffer the pressure of the second pipeline to stabilize the pressure in the second pipeline and avoid damage to the recovery device due to large changes in the pressure in the second pipeline when the vacuum pump is working.

[0014] In some embodiments of the present application, the second valve is disposed between the buffer tank and the recovery assembly.

[0015] In this way, the second valve is arranged between the buffer tank and the recovery component. When the detection gas in the equipment to be detected is recovered, the second valve blocks the second pipeline, which can prevent the residual detection gas in the buffer tank and the vacuum pump from flowing back into the equipment to be detected or escaping into the air.

[0016] In some embodiments of the present application, the recovery device also includes a one-way valve, which is arranged in the second pipeline and located between the tank body and the evacuation pump. The one-way valve is used to allow the detection gas in the second pipeline to flow from the evacuation pump to the tank body.

[0017] In this way, the one-way valve is used to allow the detection gas in the second pipeline to flow from the evacuation pump to the tank body. When the recovery device recovers the detection gas in the equipment to be detected through the second pipeline, the pressure in the tank body is relatively high. The pressure in the second pipeline is low during the start or stop of the evacuation pump, and the second valve is in the open state at this time. The detection gas in the tank body will flow back into the second pipeline and the equipment to be detected. The one-way valve can prevent the detection gas in the tank body from entering the second pipeline and the equipment to be detected, affecting the recovery effect of the detection gas, and can also prevent the detection gas in the second pipeline from flowing back and damaging the evacuation pump.

[0018] In some embodiments of the present application, the recovery component also includes a connecting pipeline and a recovery gun, and the inlet of the first pipeline and the inlet of the second pipeline are both connected to the outlet of the connecting pipeline; the recovery gun is connected to the inlet of the connecting pipeline and is used to connect with the equipment to be detected to recover the detection gas in the equipment to be detected.

[0019] In this way, the first pipeline and the second pipeline are both connected to the inlet of the connecting pipeline; the recovery gun is connected to the outlet of the connecting pipeline. The connecting pipeline can realize the interconnection of multiple pipelines. When it is necessary to connect the first pipeline, the second pipeline or the recovery gun with other pipelines, it is only necessary to open the corresponding opening on the connecting pipeline, and there is no need to redesign the pipeline to connect the first pipeline, the second pipeline or the recovery gun with other pipelines.

[0020] When the positions of the first pipeline, the second pipeline or the recovery gun are changed, it is only necessary to open corresponding openings at different positions on the connecting pipeline without redesigning the pipeline to connect the first pipeline, the second pipeline and the recovery gun.

[0021] In some embodiments of the present application, the recovery component further includes a vacuum gauge, which is provided in the connecting pipeline and is used to detect the vacuum degree of the connecting pipeline.

[0022] In this way, the vacuum gauge can detect the vacuum degree in the connecting pipeline, and based on the detection result of the vacuum gauge, it can be determined whether there is gas to be detected in the connecting pipeline. When the detection gas in the equipment to be detected is recovered, when the vacuum degree is lower than a preset value, the first valve is opened to make the first pipeline conductive, and the second valve is closed to block the second pipeline, so that the first pipeline can recover the detection gas in the equipment to be detected.

[0023] When the vacuum degree is higher than a preset value, the first valve is closed to block the first pipeline, and the second valve is opened to conduct the second pipeline, so that the first pipeline can recover the detection gas in the device to be detected. This can avoid the first pipeline from dividing the pressure of the second pipeline to ensure the pressure of the detection gas in the second pipeline, and thoroughly recover the detection gas in the device to be detected, thereby improving the recovery efficiency.

[0024] In some embodiments of the present application, the recovery component also includes a recovery pipeline and a pressure detector, the inlet of the recovery pipeline is connected to the recovery gun, and the outlet of the recovery pipeline is connected to the inlet of the connecting pipeline; the pressure detector is arranged in the recovery pipeline and is located between the recovery gun and the connecting pipeline.

[0025] In this way, the pressure detector can detect the pressure of the test gas passing through the recovery pipeline, and can control the opening or closing of the evacuation pump according to the detection result of the pressure detector, so as to avoid damage to the recovery pipeline or the equipment to be tested due to excessive pressure in the evacuation pump due to a long working time.

[0026] In some embodiments of the present application, the recovery component further includes a filter, which is disposed in the recovery pipeline and located between the pressure detector and the connecting pipeline.

[0027] In this way, the filter can filter the detection gas passing through the recovery gun to remove impurities such as particulate matter, microorganisms, aerosols, etc. in the detection gas, provide a clean detection gas environment, reduce the damage of impurities to the recovery gun and recovery device, extend the service life of the recovery gun and recovery device, and reduce the cleaning frequency of the recovery gun and recovery device, thereby reducing the operating cost of the equipment.

[0028] In some embodiments of the present application, there are multiple filling and recovery devices, and the recovery components of the multiple recovery devices are all used to connect to the detection gas outlet of the equipment to be detected, and the first pipeline and the second pipeline of the recovery device are both connected to the tank body; and / or, the detection gas recovery device also includes a third valve, the third valve is connected to the outlet of the tank body, and the third valve is used to control the conduction or blocking of the tank body outlet.

[0029] In this way, the detection gas recovery equipment is equipped with two recovery devices, so that the detection gas recovery equipment can recover the detection gas from two pieces of equipment to be detected at the same time, or the two recovery devices can recover the detection gas from the same equipment to be detected at the same time, thereby improving the recovery efficiency of the detection gas recovery equipment. The third valve can close or open the outlet of the tank body to prevent leakage of the detection gas in the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 One of the structural diagrams of the detection gas recovery equipment is provided for this application;

[0031] Figure 2The second structural diagram of the detection gas recovery equipment is provided for this application;

[0032] Figure 3 The third structural diagram of the detection gas recovery equipment is provided for this application;

[0033] Figure 4 A fourth structural diagram of a detection gas recovery device is provided for this application;

[0034] Figure 5 A fifth structural diagram of a detection gas recovery device is provided for this application;

[0035] Figure 6 The sixth structural diagram of the detection gas recovery equipment is provided for this application;

[0036] Figure 7 The seventh structural diagram of the detection gas recovery equipment is provided for this application;

[0037] Figure 8 The present application provides an eighth structural diagram of a detection gas recovery device;

[0038] Figure 9 A ninth structural diagram of a detection gas recovery device is provided for this application;

[0039] Figure 10 The present application provides a structural diagram of a detection gas recovery device.

[0040] Figure 11 The present application provides a structural diagram of a detection gas recovery device eleven;

[0041] Figure 12 The present application provides a structural diagram of a detection gas recovery device twelfth;

[0042] Figure 13 The present application provides a structural diagram of a detection gas recovery device thirteen;

[0043] Figure 14 A fourteenth structural diagram of a detection gas recovery device is provided for this application.

[0044] Figure markings: 100, detection gas recovery equipment; 10, tank body; 20, recovery device; 21, recovery component; 22, first pipeline; 221, first valve; 23, second pipeline; 231, second valve; 24, vacuum component; 241, vacuum pump; 242, buffer tank; 232, one-way valve; 211, connecting pipeline; 212, recovery gun; 213, vacuum gauge; 214, detection valve; 215, recovery pipeline; 216, pressure detection gauge; 217, filter; 11, third valve; 12, first inlet; 13, second inlet; 14, first inlet valve; 15, second inlet valve. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0049] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0050] Equipment with confined spaces such as pipes or cavities, such as heat exchangers and compressors, often require leak testing to ensure the tightness of the equipment. After testing the equipment, the test gas is typically recovered and processed for secondary use. However, during this recovery process, the pressure in the equipment can fluctuate significantly, potentially damaging it.

[0051] To solve the above problems, Figure 1 As shown, the present application provides a detection gas recovery device 100, including: a tank body 10 and a recovery device 20, the tank body 10 is used to store the recovered detection gas; the recovery device 20 is used to recover the detection gas.

[0052] The tank body 10 can be made of carbon steel, which provides excellent strength and weldability. Alternatively, the tank body 10 can be made of stainless steel, which provides excellent corrosion resistance and high-temperature resistance, making it suitable for storing corrosive or high-temperature detection gases. Alternatively, the tank body 10 can be made of an alloy material, allowing it to withstand higher pressures, temperatures, or corrosive environments. This application is not limited to this.

[0053] It should be noted that the tank body 10 may include a tank body outlet and a tank body inlet. The tank body inlet is used to fill the tank body 10 with detection gas, and the tank body outlet is used to discharge the detection gas in the tank body 10.

[0054] In addition, the detection gas can be nitrogen, helium, or a nitrogen-helium mixed detection gas, etc., which is not limited in this application.

[0055] like Figure 1 and Figure 2 As shown, the recovery device 20 further includes a recovery component 21. The air inlet end of the recovery component 21 is used to connect to the detection gas outlet of the device to be detected.

[0056] The recovery component 21 may include an air inlet and an air outlet. The detection gas may enter the recovery component 21 from the air inlet, and the detection gas may be discharged from the air outlet of the recovery component 21 .

[0057] like Figure 1 and Figure 2As shown, the recovery device 20 further includes a first pipeline 22 and a first valve 221. The inlet of the first pipeline 22 is connected to the gas outlet of the recovery assembly 21, and the outlet of the first pipeline 22 is connected to the inlet of the tank body 10; the first valve 221 is provided on the first pipeline 22 for opening or closing the first pipeline 22.

[0058] The first pipeline 22 may include a first pipeline inlet and a first pipeline outlet. The detection gas may enter the first pipeline 22 through the first pipeline inlet, and the detection gas may be discharged from the first pipeline outlet of the first pipeline 22 .

[0059] In addition, the first valve 221 can be a butterfly valve, a ball valve or a solenoid valve, etc., which is not limited in this application.

[0060] like Figure 1 and Figure 2 As shown, the recovery device 20 further includes a second pipeline 23, a second valve 231, and an evacuation assembly 24. The inlet of the second pipeline 23 is connected to the gas outlet of the recovery assembly 21, and the outlet of the second pipeline 23 is connected to the inlet of the tank body 10. The second valve 231 is provided on the second pipeline 23 and is used to open or block the second pipeline 23. The evacuation assembly 24 is provided on the second pipeline 23 and is used to extract the test gas from the device to be tested into the tank body 10.

[0061] The second pipeline 23 may include a second pipeline inlet and a second pipeline outlet. The detection gas may enter the second pipeline 23 through the second pipeline inlet, and the detection gas may be discharged from the second pipeline outlet of the second pipeline 23 .

[0062] In addition, the second valve 231 can be a butterfly valve, a ball valve or a solenoid valve, etc., which is not limited in this application.

[0063] The present application provides a recovery device 20 to recover the detection gas in the device to be detected to the tank body 10. Specifically, when recovering the detection gas in the device to be detected, the air inlet end of the recovery component 21 can be connected to the air outlet end of the device to be detected, and the first valve 221 can be opened to conduct the first pipeline 22, and the second valve 231 can be closed to seal the second pipeline 23. At this time, the detection gas in the device to be detected can flow to the first pipeline 22 through the recovery component 21, and then flow through the first pipeline 22 to be recovered into the tank body 10.

[0064] After the test gas is recovered from the device to be tested through the first pipeline 22, the second valve 231 can be opened to connect the second pipeline 23, and the first valve 221 can be closed to block the first pipeline 22. At this time, the evacuation component 24 is started to extract the test gas remaining in the device to be tested through the second pipeline 23 into the tank body 10.

[0065] In this way, the detection gas in the device to be detected can be recovered more thoroughly to reduce the waste of detection gas, and the residual amount of detection gas in the device to be detected can be reduced to reduce the impact of the residual detection gas on the device to be detected.

[0066] In a possible structural design, the tank body 10 may include at least one safety valve, which is provided on the tank body 10 .

[0067] In this way, when the pressure inside the tank body 10 exceeds the set pressure of the tank body 10, the safety valve will automatically open to discharge part of the detection gas in the tank body 10, reduce the pressure inside the tank body 10, and prevent the tank body 10 from being damaged due to excessive pressure.

[0068] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the evacuation assembly 24 includes an evacuation pump 241 and a buffer tank 242. The evacuation pump 241 is used to extract the detection gas in the device to be detected through the recovery assembly 21. The buffer tank 242 is arranged between the evacuation pump 241 and the recovery assembly 21.

[0069] The evacuation pump 241 may be a rotary vane pump, a centrifugal pump, or a dry pump, etc., and this application does not limit this.

[0070] In addition, the buffer tank 242 can be a diaphragm buffer tank 242 or an airbag buffer tank 242, which is not limited in this application.

[0071] In this way, after the detection gas in the device to be detected is recovered through the first pipeline 22, some residual detection gas still exists in the device to be detected. At this time, the second valve 231 can be opened to connect the second pipeline 23.

[0072] Then, the evacuation pump 241 is started to recover the remaining detection gas through the second pipeline 23 to the tank body 10. After the residual detection gas is completely recovered, the second valve 231 is closed to block the second pipeline 23. In this way, the residual detection gas in the device to be tested can be recovered more thoroughly.

[0073] By arranging the buffer tank 242 in the second pipeline 23, the buffer tank 242 can buffer the pressure of the second pipeline 23 to stabilize the pressure in the second pipeline 23 and avoid damage to the recovery device 20 due to large changes in the pressure in the second pipeline 23 when the vacuum pump 241 is working.

[0074] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the second valve 231 is provided between the buffer tank 242 and the recovery assembly 21 .

[0075] In this way, the second valve 231 is arranged between the buffer tank 242 and the recovery component 21. When the detection gas in the equipment to be detected is recovered, the second valve 231 blocks the second pipeline 23, which can prevent the residual detection gas in the buffer tank 242 and the vacuum pump 241 from flowing back into the equipment to be detected or escaping into the air.

[0076] In a possible structural design, such as Figure 2 and Figure 4 As shown, the second valve 231 may be located between the evacuation pump 241 and the tank 10 .

[0077] In this way, the second valve 231 is set between the evacuation pump 241 and the tank body 10. When the second valve 231 blocks the second pipeline 23, the detection gas in the tank body 10 can be prevented from flowing into the evacuation pump 241 and the buffer tank 242, so that the pressure inside the buffer tank 242 and the evacuation pump 241 is higher, affecting the service life of the evacuation pump 241 and the buffer tank 242.

[0078] In some embodiments of the present application, Figure 1 and Figure 5 As shown, the recovery device 20 further includes a one-way valve 232. The one-way valve 232 is provided in the second pipeline 23, and is located between the tank body 10 and the evacuation pump 241. The one-way valve 232 is used to allow the detection gas in the second pipeline 23 to flow from the evacuation pump 241 to the tank body 10.

[0079] Among them, the one-way valve 232 can be a spring one-way valve, a ball one-way valve, a piston one-way valve, a diaphragm one-way valve, a rotary one-way valve, a butterfly one-way valve or a right-angle one-way valve, and this application does not limit this.

[0080] In this way, the one-way valve 232 is used to allow the detection gas in the second pipeline 23 to flow from the evacuation pump 241 to the tank body 10. When the recovery device 20 recovers the detection gas in the equipment to be detected through the second pipeline 23, because the pressure in the tank body 10 is relatively high, the pressure in the second pipeline 23 is low during the start or stop of the evacuation pump 241, and at this time the second valve 231 is in the open state, the detection gas in the tank body 10 will flow back into the second pipeline 23 and the equipment to be detected. The one-way valve 232 can prevent the detection gas in the tank body 10 from entering the second pipeline 23 and the equipment to be detected, affecting the recovery effect of the detection gas, and can also prevent the detection gas in the second pipeline 23 from flowing back and damaging the evacuation pump 241.

[0081] In some embodiments of the present application, Figure 2 and Figure 6As shown, the recovery assembly 21 further includes a connecting pipeline 211 and a recovery gun 212. The first pipeline inlet of the first pipeline 22 and the second pipeline inlet of the second pipeline 23 are both connected to the connecting pipeline outlet of the connecting pipeline 211. The recovery gun 212 is connected to the connecting pipeline inlet of the connecting pipeline 211 and is used to communicate with the device to be tested to recover the test gas in the device to be tested.

[0082] In this way, the first pipeline 22 and the second pipeline 23 are both connected to the connecting pipeline outlet of the connecting pipeline 211; the recovery gun 212 is connected to the connecting pipeline inlet of the connecting pipeline 211, and the connecting pipeline 211 can realize the mutual connection of multiple pipelines. When it is necessary to connect the first pipeline 22, the second pipeline 23 or the recovery gun 212 to other pipelines, it is only necessary to open the corresponding opening on the connecting pipeline 211, and there is no need to redesign the pipeline to connect the first pipeline 22, the second pipeline 23 or the recovery gun 212 to other pipelines.

[0083] When the positions of the first pipeline 22, the second pipeline 23 or the recovery gun 212 are changed, it is only necessary to open corresponding openings at different positions on the connecting pipeline 211 without redesigning the pipeline to connect the first pipeline 22, the second pipeline 23 and the recovery gun 212.

[0084] In a possible structural design, multiple openings may be provided in the pipe body of the connecting pipe 211 , and the first pipe 22 , the second pipe 23 and the recovery gun 212 are respectively connected to different openings on the pipe body.

[0085] In this way, the connecting pipeline 211 can realize the interconnection of multiple pipelines. When it is necessary to connect the first pipeline 22, the second pipeline 23 or the recovery gun 212 to other pipelines, it is only necessary to open the corresponding opening on the connecting pipeline 211, and there is no need to redesign the pipeline to connect the first pipeline 22, the second pipeline 23 or the recovery gun 212 to other pipelines.

[0086] When the position of the first pipeline 22, the second pipeline 23 or the recovery gun 212 is changed, it is only necessary to open corresponding openings at different positions on the connecting pipeline 211, without having to redesign the pipeline to connect the first pipeline 22, the second pipeline 23 and the recovery gun 212. Figure 2 and Figure 7 As shown, the recovery component 21 further includes a vacuum gauge 213. The vacuum gauge 213 is provided on the connecting pipeline 211, and is used to detect the vacuum degree of the connecting pipeline 211.

[0087] In this way, the vacuum gauge 213 can detect the vacuum degree in the connecting pipeline. According to the detection result of the vacuum gauge 213, it can be determined whether there is the gas to be detected in the connecting pipeline 211. When the detection gas in the device to be detected is recovered, when the vacuum degree is lower than a preset value, the first valve 221 is opened to make the first pipeline 22 conductive, and the second valve 231 is closed to block the second pipeline 23, so that the first pipeline 22 can recover the detection gas in the device to be detected.

[0088] When the vacuum degree is higher than a preset value, the first valve 221 is closed to block the first pipeline 22, and the second valve 231 is opened to conduct the second pipeline 23, so that the first pipeline 22 can recover the detection gas in the detection equipment. This can avoid the first pipeline 22 from dividing the pressure of the second pipeline 23 to ensure the pressure of the detection gas in the second pipeline 23, and thoroughly recover the detection gas in the detection equipment to improve the recovery efficiency.

[0089] In one possible structural design, Figure 2 and Figure 8 As shown, the recovery component 21 may further include a detection valve 214 . The detection valve 214 is disposed between the vacuum gauge 213 and the connecting pipe 211 .

[0090] In this way, when the vacuum gauge 213 is not needed to work, the detection valve 214 can be closed to avoid the vacuum gauge 213 being in the working state for a long time, which will reduce the service life of the vacuum gauge 213.

[0091] In some embodiments of the present application, Figure 2 and Figure 9 As shown, the recovery assembly 21 further includes a recovery line 215 and a pressure gauge 216. The inlet of the recovery line 215 is connected to the recovery gun 212, and the outlet of the recovery line 215 is connected to the inlet of the connecting line 211. The pressure gauge 216 is provided in the recovery line 215 and is located between the recovery gun 212 and the connecting line 211.

[0092] The pressure detector 216 may be of liquid column type, elastic type, load type, electric type, etc., which is not limited in this application.

[0093] In this way, the pressure detector 216 can detect the pressure of the test gas passing through the recovery pipeline 215, and can control the opening or closing of the vacuum pump 241 according to the detection result of the pressure detector 216, so as to avoid damage to the recovery pipeline 215 or the equipment to be tested due to excessive pressure in the vacuum pump 241 due to a long working time.

[0094] In some embodiments of the present application, Figure 2 and Figure 10As shown, the recovery component 21 further includes a filter 217. The filter 217 is provided in the recovery pipeline 215. The filter 217 is located between the pressure detection gauge 216 and the connecting pipeline 211.

[0095] In addition, the filter 217 may be an adsorption-type detection gas filter 217 , a chemical reaction-type detection gas filter 217 , or a concentration-type detection gas filter 217 , etc., and this application does not limit this.

[0096] In this way, the filter 217 can filter the detection gas passing through the recovery gun 212 to remove impurities such as particulate matter, microorganisms, aerosols, etc. in the detection gas, provide a clean detection gas environment, reduce the damage of impurities to the recovery gun 212 and the recovery device 20, extend the service life of the recovery gun 212 and the recovery device 20, and reduce the cleaning frequency of the recovery gun 212 and the recovery device 20, thereby reducing the equipment operating cost.

[0097] In some embodiments of the present application, Figure 2 and Figure 11 As shown, there are multiple filling and recovery devices 20, and the recovery components 21 of the multiple recovery devices 20 are all used to connect to the detection gas outlet of the equipment to be detected, and the first pipeline 22 and the second pipeline 23 of the recovery device 20 are both connected to the tank body 10.

[0098] In this way, the detection gas recovery equipment 100 is provided with two recovery devices 20, so that the detection gas recovery equipment 100 can recover the detection gas from two pieces of equipment to be detected at the same time, or the two recovery devices 20 can recover the detection gas from the same equipment to be detected at the same time, thereby improving the recovery efficiency of the detection gas recovery equipment 100.

[0099] In some embodiments of the present application, Figure 2 and Figure 12 As shown, the detection gas recovery device 100 further includes a third valve 11. The third valve 11 is connected to the outlet of the tank body 10, and the third valve 11 is used to control the conduction and blocking of the outlet of the tank body 10.

[0100] The third valve 11 may be a butterfly valve, a ball valve or a solenoid valve, etc., and this application does not limit this.

[0101] In this way, the third valve 11 can close or open the outlet of the tank body 10 to prevent the detection gas in the tank body 10 from leaking.

[0102] In a possible structural design, such as Figure 2 and Figure 13 As shown, the tank inlet of the tank 10 may include a first inlet 12 and a second inlet 13 , the first pipe 22 is in communication with the first inlet 12 , and the second pipe 23 is in communication with the second inlet 13 .

[0103] In this way, connecting the first pipeline 22 with the first inlet 12 and the second pipeline 23 with the second inlet 13 can avoid interference between the connection position of the first pipeline 22 and the tank body 10 and the connection position of the second pipeline 23 and the tank body 10, thereby facilitating the connection of the first pipeline 22 and the second pipeline 23 with the tank body 10.

[0104] In one possible structural design, Figure 2 and Figure 14 As shown, the tank body 10 may include a first inlet valve 14 and a second inlet valve 15. The first inlet valve 14 is provided at the first inlet 12 and is used to open or close the first inlet 12. The second inlet valve 15 is provided at the second inlet 13 and is used to open or close the second inlet 13.

[0105] In this way, the first inlet valve 14 can be used to open or close the first inlet 12, and the second inlet valve 15 can be used to open or close the second inlet 13, so as to realize separate control of the first pipeline 22 and the second pipeline 23, thereby improving the convenience of controlling the first pipeline 22 and the second pipeline 23.

[0106] In some embodiments of the present application, the detection gas recovery equipment 100 is controlled by a PLC system, and the system performs various actions according to the preset program of the PLC system. The operation and operating status information of the detection gas recovery equipment 100 will be completed and displayed on the touch screen.

[0107] The PLC system provides three operating modes: automatic operation, manual step-by-step operation, and manual maintenance, each suitable for different situations. Under normal circumstances, the system operates in automatic mode, but manual step-by-step operation is available when a device malfunctions. Testing, maintenance, and overhaul can be performed in manual maintenance mode, which displays the operating status.

[0108] During the operation of the detection gas recovery device 100, the PLC system control will monitor and display the working conditions of the detection gas recovery device 100 and the operating status of key components such as the first valve 221, the evacuation pump 241 and the vacuum gauge 213.

[0109] For various faults and warning information during the operation of the gas recovery equipment 100, an alarm prompt will be given online in real time. The alarm uses a synchronous sound and light reminder method. The alarm indicator light on the operation box lights up, the buzzer sounds long, and specific information is displayed on the touch screen.

[0110] The PLC system controls the operation time statistics of the components of the detection gas recovery equipment 100, such as the first valve 221, the vacuum pump 241 and the vacuum gauge 213. When the statistical result exceeds the set time, the PLC system controls the alarm to prompt the maintenance of the detection gas recovery equipment 100. After the maintenance, the operation time can be reset.

[0111] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprise" does not exclude other components or steps, and "a" or "an" does not exclude multiple components or steps. A single processor or other unit may implement several functions listed in the claims. The fact that certain measures are recorded in different dependent claims does not mean that these measures cannot be combined to produce good results.

[0112] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

[0113] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A detection gas recovery device, characterized in that: include: Tank, used for storing recovered test gas; A recovery device for recovering the detection gas, the recovery device comprising: A recovery component, wherein the air inlet end of the recovery component is used to connect to the detection gas outlet of the device to be detected; a first pipeline, wherein the inlet of the first pipeline is connected to the gas outlet end of the recovery component, and the outlet of the first pipeline is connected to the inlet of the tank; a first valve, which is provided in the first pipeline and is used to open or block the first pipeline; a second pipeline, wherein the inlet of the second pipeline is connected to the gas outlet end of the recovery component, and the outlet of the second pipeline is connected to the inlet of the tank; a second valve, the second valve being provided in the second pipeline and being used for opening or blocking the second pipeline; A vacuum component is provided in the second pipeline.

2. A detection gas recovery device according to claim 1, characterized in that: The evacuation assembly comprises: an evacuation pump, the evacuation pump being used to extract the detection gas in the device to be detected through the recovery component; A buffer tank is provided between the evacuation pump and the recovery component.

3. A detection gas recovery device according to claim 2, characterized in that: The second valve is arranged between the buffer tank and the recovery component.

4. A detection gas recovery device according to claim 2, characterized in that: The recovery device also includes: A one-way valve is provided in the second pipeline, the one-way valve is located between the tank body and the evacuation pump, and the one-way valve is used to allow the detection gas in the second pipeline to flow from the evacuation pump to the tank body.

5. The detection gas recovery device according to claim 1, characterized in that: The recycling component also includes: a connecting pipeline, wherein the inlet of the first pipeline and the inlet of the second pipeline are both connected to the outlet of the connecting pipeline; A recovery gun is connected to the inlet of the connecting pipeline, and is used to communicate with the device to be detected to recover the detection gas in the device to be detected.

6. The detection gas recovery device according to claim 5, characterized in that: The recycling component also includes: A vacuum gauge is provided on the connecting pipeline and is used to detect the vacuum degree of the connecting pipeline.

7. The detection gas recovery device according to claim 5, characterized in that: The recycling component also includes: a recovery pipeline, wherein the inlet of the recovery pipeline is connected to the recovery gun, and the outlet of the recovery pipeline is connected to the inlet of the connecting pipeline; A pressure detector is provided in the recovery pipeline, and the pressure detector is located between the recovery gun and the connecting pipeline.

8. The detection gas recovery device according to claim 7, characterized in that: The recycling component also includes: A filter is provided in the recovery pipeline, and the filter is located between the pressure detector and the connecting pipeline.

9. A detection gas recovery device according to any one of claims 1 to 8, characterized in that: There are multiple recovery devices, and the recovery components of the multiple recovery devices are all used to connect to the detection gas outlet of the device to be detected, and the first pipeline and the second pipeline of the recovery device are both connected to the tank body; And / or, the detection gas recovery device further includes a third valve, the third valve is connected to the outlet of the tank body, and the third valve is used to control the conduction and blocking of the tank body outlet.

10. A detection gas recovery device, characterized in that: include: Tank, used for storing recovered test gas; A recovery device for recovering the detection gas, the recovery device comprising: A recovery component, wherein the air inlet end of the recovery component is used to connect to the detection gas outlet of the device to be detected; a first pipeline, wherein the inlet of the first pipeline is connected to the gas outlet end of the recovery component, and the outlet of the first pipeline is connected to the inlet of the tank; a second pipeline, wherein the inlet of the second pipeline is connected to the gas outlet end of the recovery component, and the outlet of the second pipeline is connected to the inlet of the tank; an evacuation component, the evacuation component being arranged in the second pipeline; The first pipeline is used to discharge the detection gas in the device to be detected into the tank body, and after the first pipeline discharges the detection gas into the tank body, the evacuation component discharges the residual detection gas in the device to be detected into the tank body through the second pipeline.

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