CN223389348U - A gas detection and filling device - Google Patents

Abstract

The utility model discloses gas detection filling equipment, relates to the technical field of gas filling, and aims to solve the problem that the internal pressure of equipment to be detected is unstable when mixed gas is injected into the equipment to be detected. The gas detection filling device comprises a first tank body and a filling device, wherein the first tank body is used for storing detection gas, the filling device comprises an inflating assembly, a main inflating pipeline, a first inflating pipeline, a second inflating pipeline and a second valve, the inflating assembly is used for filling the detection gas to the device to be detected, one end of the main inflating pipeline is connected to an outlet of the first tank body, one end of the first inflating pipeline is communicated with the other end of the main inflating pipeline, the other end of the first inflating pipeline is communicated with the inflating assembly, the first inflating pipeline is provided with a first pressure reducing valve, one end of the second inflating pipeline is communicated with the other end of the main inflating pipeline, the other end of the second inflating pipeline is communicated with the inflating assembly, and the second valve is arranged on the second inflating pipeline and used for conducting or blocking the second inflating pipeline.

Description

Gas detection filling equipment

Technical Field

The utility model relates to the technical field of gas filling, in particular to gas detection filling equipment.

Background

Leak detection tests are generally required for equipment with closed spaces such as pipelines or cavities, for example, heat exchangers, compressors and the like, so as to ensure the tightness of the equipment with the closed spaces. In the leak detection test, the filling device is used for filling the mixed gas of helium and nitrogen into the closed space of the device for leak detection.

In the prior art, the mixed gas is stored in a tank body after being compressed, the pressure in the tank body is higher, and the filling equipment is used for filling the mixed gas in the tank body into equipment to be detected through a filling pipeline.

Therefore, because the pressure in the tank body is higher, when the mixed gas is injected into the equipment to be detected, the pressure in the equipment to be detected is unstable, and the pressure in the equipment to be detected is suddenly increased or reduced, so that the equipment to be detected is damaged.

Disclosure of utility model

The embodiment of the utility model provides gas detection filling equipment, which solves the problems that when mixed gas is injected into equipment to be detected, the internal pressure of the equipment to be detected is unstable, the internal pressure of the equipment to be detected is suddenly increased or reduced, and the equipment to be detected is damaged.

The embodiment of the utility model adopts the following technical scheme that the gas detection filling equipment comprises a first tank body and a filling device, wherein the first tank body is used for storing detection gas, the filling device comprises a filling assembly, a main filling pipeline, a first filling pipeline, a second filling pipeline and a second valve, the filling assembly is used for filling detection gas into equipment to be detected, one end of the main filling pipeline is connected to an outlet of the first tank body, one end of the first filling pipeline is communicated with the other end of the main filling pipeline, the other end of the first filling pipeline is communicated with the filling assembly, the first filling pipeline is provided with a first pressure reducing valve, one end of the second filling pipeline is communicated with the other end of the main filling pipeline, the other end of the second filling pipeline is communicated with the filling assembly, and the second valve is arranged on the second filling pipeline and used for conducting or blocking the second filling pipeline.

According to the application, the detection gas in the first tank body is filled into the equipment to be detected through the filling device, and in the process of filling the equipment to be detected, the filling assembly is communicated with the equipment to be detected, and the second valve is closed. At this time, the second valve plugs the second filling pipeline, and after the detection gas in the first tank passes through the main filling pipeline, the detection gas enters the filling assembly along the first filling pipeline communicated with the main filling pipeline, and the filling assembly injects the detection gas into the equipment to be detected. In this process, since the first pressure reducing valve is provided in the first filling pipe, the pressure in the first filling pipe can be reduced by the first pressure reducing valve, and thus the pressure of the detection gas filled into the device to be detected through the first filling pipe is low.

Then, the second valve is opened to enable the second valve to conduct the second filling pipeline, and at the moment, the detection gas in the first tank body is filled into the equipment to be detected through the second filling pipeline. Since the second filling pipe is not provided with the pressure reducing device, the pressure of the detection gas filled into the device to be detected by the second filling pipe is higher than the pressure of the detection gas filled into the device to be detected by the first filling pipe.

From this through fill the check out test set to wait to detect by first filling pipeline earlier, fill the check out test set to wait to detect by the second filling pipeline again, can make the pressure of the check out test set of letting in to wait to detect the pressure of the check out test set of gas and increase gradually to avoid letting in to wait to detect the pressure of the check out test set too big and lead to waiting to detect the inside pressure of equipment unstable, lead to waiting to detect equipment damage or testing result inaccuracy.

In some embodiments of the present application, the filling device further comprises a first valve disposed in the first filling line for conducting or blocking the first filling line.

In this way, when the device to be detected is filled with the detection gas through the second filling pipe, the first valve may be closed to close the first filling pipe. Therefore, partial pressure of the first filling pipeline to the second filling pipeline can be avoided, so that the pressure of the detection gas of the second filling pipeline is ensured, the pressure in the equipment to be detected can reach the required pressure rapidly, and the filling efficiency is improved.

When the equipment to be detected is filled, the inflation assembly is communicated with the equipment to be detected, the first valve is opened, the second valve is closed, the first valve is communicated with the first filling pipeline, and the second valve is used for plugging the second filling pipeline. After passing through the main inflation pipeline, the detection gas in the first tank body enters the inflation assembly along a first inflation pipeline communicated with the main inflation pipeline, and the inflation assembly injects the detection gas into the equipment to be detected. Then, close first valve, open the second valve to make first valve with first filling pipeline shutoff, the second valve switches on the second filling pipeline, the internal detection gas of first jar fills to waiting to detect equipment through the second filling pipeline, after filling, open first valve, close the second valve, so that first valve with first filling pipeline shutoff, the second valve with second filling pipeline shutoff, from this, not only can control the filling device and wait to detect the equipment and fill the efficiency of detecting gas through opening and closing of first valve and second valve, can also avoid filling the internal detection gas leakage of first jar after accomplishing.

In some embodiments of the application, a first pressure relief valve is provided between the main inflation line and the first valve.

Therefore, the first pressure reducing valve is arranged between the main gas charging pipeline and the first valve, and the pressure of the detected gas flowing into the first tank body is reduced through the first pressure reducing valve when the detected gas flows into the first valve, so that the pressure of the detected gas flowing through the first valve can be reduced, the first valve is prevented from being impacted greatly due to overlarge pressure of the detected gas, and the first valve is prevented from being damaged.

In some embodiments of the application, the inflation assembly comprises a connecting pipeline and an inflation gun, wherein the other end of the first inflation pipeline and the other end of the second inflation pipeline are communicated with the connecting pipeline, the inflation gun is communicated with the connecting pipeline, and the inflation gun is used for inflating detection gas to equipment to be detected.

The first filling pipeline and the second filling pipeline are communicated with the inlet of the connecting pipeline, the filling gun is communicated with the outlet of the connecting pipeline, the connecting pipeline can realize mutual communication of a plurality of pipelines, when the first filling pipeline, the second filling pipeline or the filling gun is required to be connected with other pipelines, the connecting pipeline is only required to be provided with corresponding openings, and the first filling pipeline, the second filling pipeline or the filling gun is not required to be connected with other pipelines by the design pipeline again.

When the positions of the first filling pipeline, the second filling pipeline or the filling gun are changed, corresponding openings are only required to be formed in different positions of the connecting pipeline, and the first filling pipeline, the second filling pipeline and the filling gun are not required to be connected through the design pipeline again.

In some embodiments of the application, the gas detection filling device further comprises a second tank body, the filling device further comprises a first recovery pipeline and a first recovery valve, one end of the first recovery pipeline is communicated with the connecting pipeline, the other end of the first recovery pipeline is communicated with an inlet of the second tank body, the first recovery valve is arranged in the first recovery pipeline, and the first recovery valve is used for conducting or blocking the first recovery pipeline.

Thus, after the gas detection filling device fills the detection gas into the device to be detected, the first recovery valve can be opened, so that the first recovery valve conducts the first recovery pipeline. At this time, the detection gas in the equipment to be detected can be recovered to the second tank body through the first recovery pipeline. After the detection gas is recovered, the first recovery valve is closed, so that the first recovery valve plugs the first recovery pipeline. Therefore, the method can not only prevent the detection gas from escaping into the air through the filling gun, but also recover the residual detection gas, thereby avoiding waste.

In some embodiments of the application, the filling device further comprises a second recovery pipeline, a first evacuation pump, a first buffer tank and a second recovery valve, wherein one end of the second recovery pipeline is communicated with the connecting pipeline, the other end of the second recovery pipeline is communicated with the inlet of the second tank body, the first evacuation pump is arranged on the second recovery pipeline, the first buffer tank is arranged between the first evacuation pump and the connecting pipeline, the second recovery valve is arranged on the second recovery pipeline, and the first buffer tank is arranged between the second recovery valve and the first evacuation pump.

In this way, after the detection gas in the connecting pipeline is recovered through the first recovery pipeline, part of residual detection gas still exists in the connecting pipeline and the inflation assembly. At this time, the second recovery valve may be opened so that the second recovery valve turns on the second recovery line.

And then starting the first evacuating pump, and recycling the residual detection gas to the second tank body through the second recycling pipeline. After the residual detection gas is recovered, the second recovery valve is closed, so that the second recovery valve seals the second recovery pipeline. Thus, the residual detection gas in the connecting pipeline and the inflation assembly can be recovered more thoroughly.

The second recovery pipeline is located through first buffer tank, and first buffer tank is located between first pump and the connecting line that evacuates, can make first buffer tank cushion the pressure of second recovery pipeline to stabilize the pressure in the second recovery pipeline, avoid because of the first pump that evacuates during operation pressure change in the second recovery pipeline is great, cause the damage to filling device.

In some embodiments of the present application, the filling device further comprises an evacuation pipeline, a second evacuation pump, a second buffer tank and an evacuation valve, wherein one end of the evacuation pipeline is communicated with the connection pipeline and is used for discharging the detection gas in the connection pipeline, the second evacuation pump is arranged on the evacuation pipeline, the second buffer tank is arranged on the evacuation pipeline and is arranged between the second evacuation pump and the connection pipeline, the evacuation valve is arranged on the evacuation pipeline, and the second buffer tank is arranged between the evacuation valve and the second evacuation pump.

Therefore, before the equipment to be detected is filled with the detection gas, the evacuation valve can be opened, the second evacuation pump is started, the air in the equipment to be detected can be pumped out by the second evacuation pump, the air in the equipment to be detected is discharged through the evacuation pipeline, the influence of the air in the equipment to be detected on the concentration of the detection gas is avoided, the deviation of the detection result is caused, and the detection precision of the equipment to be detected is improved. The second buffer tank is arranged between the second evacuating pump and the connecting pipeline, and can stabilize the pressure in the evacuating pipeline, so that the damage to the filling device caused by large pressure change in the evacuating pipeline when the second evacuating pump works is avoided.

In some embodiments of the application, the inflation assembly further comprises a vacuum gauge disposed in the connecting line and/or the inflation device further comprises a second pressure relief valve disposed in the main inflation line.

So, the vacuum gauge can detect the vacuum in the connecting line, when retrieving the detection gas in the connecting line, first recovery valve can carry out shutoff or switch on to first recovery pipeline according to the testing result of vacuum gauge, and the second recovery valve can carry out shutoff or switch on to second recovery pipeline according to the testing result of vacuum gauge.

The internal detection gas of first jar can be earlier through the second relief pressure valve decompression when flowing to first filling pipeline and second filling pipeline to can reduce the detection gas pressure through first filling pipeline and second filling pipeline, avoid detecting gas pressure too big and cause great impact to first filling pipeline and second filling pipeline, the pressure reduction when the internal detection gas of second relief pressure valve can make first jar gets into first filling pipeline and second filling pipeline, avoid the internal detection gas pressure of first jar to be too high and lead to filling device to damage.

In some embodiments of the application, the number of the filling devices is two, and the main filling pipes of the two filling devices are communicated with the outlet of the first tank body.

In this way, the gas detection filling equipment is provided with two filling devices, so that the gas detection filling equipment can simultaneously fill detection gas to two pieces of equipment to be detected, and the two filling devices can simultaneously fill detection gas to the same equipment to be detected, so that the filling efficiency of the gas detection filling equipment is improved.

Drawings

FIG. 1 is a schematic diagram of a gas detection filling apparatus according to the present application;

FIG. 2 is a schematic diagram showing a second embodiment of a gas detecting and filling apparatus according to the present application;

FIG. 3 is a third schematic diagram of a gas detection filling apparatus according to the present application;

FIG. 4 is a schematic diagram of a gas detection filling apparatus according to the present application;

FIG. 5 is a schematic diagram of a gas detection filling apparatus according to the present application;

FIG. 6 is a schematic diagram of a gas detection filling apparatus according to the present application;

FIG. 7 is a schematic diagram of a gas detection filling apparatus according to the present application;

FIG. 8 is a schematic view of a gas detection filling apparatus according to an eighth embodiment of the present application;

FIG. 9 is a schematic diagram of a gas detection filling apparatus according to the present application;

FIG. 10 is a schematic view of a gas detection filling apparatus according to the present application;

FIG. 11 is a schematic diagram of a gas detection filling apparatus according to an eleventh aspect of the present application;

FIG. 12 is a schematic view showing a gas-detecting and filling apparatus according to the present application;

FIG. 13 is a schematic view of a gas-detecting and filling apparatus according to thirteenth aspect of the present application;

FIG. 14 is a schematic diagram showing a gas-detecting filling apparatus according to the present application.

Reference numerals 100, gas detection filling equipment, 10, first tank, 20, filling device, 21, filling assembly, 22, main filling pipeline, 23, first filling pipeline, 231, first pressure reducing valve, 24, second filling pipeline, 241, second valve, 232, first valve, 211, connecting pipeline, 212, filling gun, 213, first filter, 214, first pressure detector, 30, second tank, 25, first recovery pipeline, 251, first recovery valve, 26, second recovery pipeline, 262, first evacuation pump, 263, first buffer tank, 261, second recovery valve, 27, evacuation pipeline, 271, second evacuation pump, 272, second buffer tank, 273, evacuation valve, 215, vacuum gauge, 221, second pressure reducing valve, 216, detection valve, 11, outlet pipeline, 12, outlet valve, 31, inlet pipeline, 32, inlet valve.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, when describing a pipeline or channel, the terms "connected" and "connected" as used herein have the meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Leak detection tests are generally required for equipment with closed spaces such as pipelines or cavities, for example, heat exchangers, compressors and the like, so as to ensure the tightness of the equipment with the closed spaces. In the prior art, the mixed gas is stored in the tank body after being compressed, the pressure in the tank body is higher, and when the mixed gas in the tank body is filled into the equipment to be detected through the filling pipeline, the internal pressure of the equipment to be detected is unstable, and the internal pressure of the equipment to be detected is suddenly increased or reduced, so that the equipment to be detected is damaged.

In order to solve the above problems, an embodiment of the present utility model adopts a technical scheme that, as shown in fig. 1, a gas detection filling apparatus 100 is provided, including a first tank 10 and a filling device 20, wherein the first tank 10 is used for storing a detection gas.

The first tank 10 may be made of carbon steel, so that the first tank 10 has good strength and weldability. The first tank 10 may also be made of stainless steel, so that the first tank 10 has excellent corrosion resistance and high temperature resistance. The first tank 10 made of stainless steel is suitable for storing corrosive gas or high temperature gas. The first tank 10 may also be made of an alloy material to allow the first tank 10 to accommodate higher pressures, temperatures, or corrosive environments. The application is not limited in this regard.

The first tank 10 may include an outlet for filling the first tank 10 with the detection gas, and an inlet for discharging the detection gas from the first tank 10.

The detection gas may be nitrogen, helium, or a mixture of nitrogen and helium, and the application is not limited thereto.

As shown in fig. 1 and 2, the filling device 20 includes an inflation assembly 21, and the inflation assembly 21 is used to fill the device to be inspected with the detection gas.

As shown in fig. 1 and 2, the filling device 20 further includes a main filling pipe 22, one end of the main filling pipe 22 being connected to the outlet of the first tank 10.

As shown in fig. 1 and 2, the filling device 20 further includes a first filling pipe 23, one end of the first filling pipe 23 is communicated with the other end of the main filling pipe 22, the other end of the first filling pipe 23 is communicated with the filling assembly 21, and the first filling pipe 23 is provided with a first pressure reducing valve 231.

The first pressure reducing valve 231 may be a diaphragm type, an inner spring piston type, a combined type, an acting type, a piston type, a direct acting type, a pilot type, or the like, which is not limited in the present application.

As shown in fig. 1 and 2, the filling device 20 further includes a second filling pipe 24, one end of the second filling pipe 24 is communicated with the other end of the main filling pipe 22, the other end of the second filling pipe 24 is communicated with the filling assembly 21, and a second valve 241 is provided in the second filling pipe 24 for conducting or blocking the second filling pipe 24.

The second valve 241 may be a butterfly valve, a ball valve, or a solenoid valve, which is not limited in the present application.

One end of the main inflation pipe 22 communicates with the outlet of the first tank 10, and the other end of the main inflation pipe 22 communicates with the first and second inflation pipes 23 and 24.

In the application, the filling device 20 fills the detection gas in the first tank body 10 into the equipment to be detected, and in the process of filling the equipment to be detected, the inflation assembly 21 is communicated with the equipment to be detected, and the second valve 241 is closed. At this time, the second valve 241 closes the second filling pipe 24, and the detection gas in the first tank 10 passes through the main filling pipe 22, then enters the filling assembly 21 along the first filling pipe 23 which is communicated with the main filling pipe 22, and the filling assembly 21 injects the detection gas into the equipment to be detected. In this process, since the first filling pipe 23 is provided with the first pressure reducing valve 231, the first pressure reducing valve 231 can reduce the pressure in the first filling pipe 23, and thus the pressure of the detection gas filled into the device to be detected through the first filling pipe 23 is low.

Subsequently, the second valve 241 is opened so that the second valve 241 turns on the second filling line 24, and at this time, the detection gas in the first tank 10 is filled into the device to be detected through the second filling line 24. Since the second filling line 24 is not provided with a pressure reducing device, the pressure of the detection gas filled into the device to be detected by the second filling line 24 is higher than the pressure of the detection gas filled into the device to be detected by the first filling line 23.

Therefore, the first filling pipeline 23 fills the detection gas into the equipment to be detected, and the second filling pipeline 24 fills the detection gas into the equipment to be detected, so that the pressure of the detection gas introduced into the equipment to be detected is gradually increased, and the internal pressure of the equipment to be detected is not stable due to the overlarge pressure of the detection gas introduced into the equipment to be detected, and the equipment to be detected is damaged or the detection result is inaccurate.

In some embodiments of the present application, as shown in fig. 1 and 3, the filling device 20 further includes a first valve 232, where the first valve 232 is disposed in the first filling line 23 and is used to conduct or block the first filling line 23.

The first valve 232 may be a butterfly valve, a ball valve, or a solenoid valve, which is not limited in the present application.

In addition, the first pressure reducing valve 231 may be located between the first valve 232 and the main inflation line 22, and the first valve 232 may be located between the first pressure reducing valve 231 and the main inflation line 22, which is not limited in this regard.

In this way, when the device to be inspected is filled with the inspection gas through the second filling line 24, the first valve 232 may be closed to close the first filling line 23. In this way, the partial pressure of the first filling pipeline 23 to the second filling pipeline 24 can be avoided, so that the pressure of the detection gas of the second filling pipeline 24 can be ensured, the pressure in the equipment to be detected can quickly reach the required pressure, and the filling efficiency is improved.

When the device to be detected is being filled, the inflation assembly 21 is communicated with the device to be detected, the first valve 232 is opened, the second valve 241 is closed, so that the first valve 232 conducts the first filling pipeline 23, and the second valve 241 seals the second filling pipeline 24. After passing through the main inflation pipe 22, the detection gas in the first tank 10 enters the inflation assembly 21 along a first inflation pipe 23 communicated with the main inflation pipe 22, and the inflation assembly 21 injects the detection gas into the equipment to be detected. Subsequently, the first valve 232 is closed, and the second valve 241 is opened, so that the first valve 232 closes the first filling pipe 23, the second valve 241 opens the second filling pipe 24, and the detection gas in the first tank 10 is filled into the device to be detected through the second filling pipe 24. After filling, the first valve 232 is opened, the second valve 241 is closed, so that the first valve 232 seals the first filling pipeline 23, and the second valve 241 seals the second filling pipeline 24, thereby controlling the efficiency of the filling device 20 for filling the detection gas into the equipment to be detected by controlling the opening and closing of the first valve 232 and the second valve 241, and avoiding the leakage of the detection gas in the first tank 10 after filling.

In some embodiments of the present application, as shown in fig. 1 and 4, a first pressure relief valve 231 is provided between the main inflation conduit 22 and a first valve 232.

In this way, the first pressure reducing valve 231 is disposed between the main gas charging pipe 22 and the first valve 232, and the pressure of the detected gas flowing into the first tank 10 will be reduced through the first pressure reducing valve 231 when flowing into the first valve 232, so as to reduce the pressure of the detected gas flowing through the first valve 232, avoid the excessive pressure of the detected gas from causing a larger impact on the first valve 232, and further avoid the damage of the first valve 232.

In some embodiments of the present application, as shown in fig. 2 and 5, the inflation assembly 21 includes a connection line 211 and an inflation gun 212, the other end of the first inflation line 23 and the other end of the second inflation line 24 each being in communication with the connection line 211, the inflation gun 212 being for inflating the device to be inspected with the detection gas.

It should be noted that, the two ends of the first filling pipe 23 are respectively connected to the connecting pipe 211 and the main inflation pipe 22, and the two ends of the second filling pipe 24 are respectively connected to the connecting pipe 211 and the main inflation pipe 22.

The first filling pipeline 23 and the second filling pipeline 24 are communicated with the inlet of the connecting pipeline 211, the filling gun 212 is communicated with the outlet of the connecting pipeline 211, the connecting pipeline 211 can realize mutual communication of a plurality of pipelines, when the first filling pipeline 23, the second filling pipeline 24 or the filling gun 212 is required to be connected with other pipelines, only corresponding openings are required to be formed on the connecting pipeline 211, and the first filling pipeline 23, the second filling pipeline 24 or the filling gun 212 is not required to be connected with other pipelines again by the design pipeline.

When the positions of the first filling pipe 23, the second filling pipe 24 or the filling gun 212 are changed, only corresponding openings are required to be formed at different positions on the connecting pipe 211, and the first filling pipe 23, the second filling pipe 24 and the filling gun 212 do not need to be connected by the design pipe again.

In one possible structural design, as shown in FIGS. 2 and 6, the inflation assembly 21 further includes a first filter 213 and a first pressure sensor 214.

The first filter 213 may be disposed between the first pressure detector 214 and the filling gun 212, and the first pressure detector 214 may be disposed between the first filters 213, which is not limited in the present application.

The pressure gauge may be a liquid column type, an elastic type, a load type, an electric measuring type, or the like, and the present application is not limited thereto.

The filter may be an adsorption type gas filter, a chemical reaction type gas filter, a concentration type gas filter, or the like, and the present application is not limited thereto.

So, the filter can filter the gas passing through the filling gun 212 to remove impurities such as particulate matters, microorganisms, aerosol and the like in the gas, provide a clean gas environment, reduce the damage of the impurities to the filling gun 212 and equipment to be detected, prolong the service life of the filling gun 212, reduce the cleaning frequency of the filling gun 212 and reduce the running cost of the equipment. The pressure detector can detect the pressure of the detected gas passing through the inflation assembly 21, and the first pressure reducing valve 231 can be adjusted according to the detection result of the pressure detector, so as to control the pressure of the detected gas flowing into the inflation assembly 21, and the pressure of the detected gas reaches the range required for detection.

In some embodiments of the present application, as shown in fig. 1 and 7, the gas detection filling apparatus 100 further includes a second tank 30, the filling device 20 further includes a first recovery pipe 25 and a first recovery valve 251, one end of the first recovery pipe 25 is connected to the connection pipe 211, the other end of the first recovery pipe 25 is connected to the inlet of the second tank 30, the first recovery valve 251 is provided in the first recovery pipe 25, and the first recovery valve 251 is used for conducting or blocking the first recovery pipe 25.

The second tank 30 may be made of carbon steel, so that the second tank 30 has good strength and weldability, the second tank 30 may be made of stainless steel, so that the second tank 30 has excellent corrosion resistance and high temperature resistance, the second tank 30 is suitable for storing corrosive gas or high temperature gas, and the second tank 30 may be made of alloy material, so that the second tank 30 is suitable for higher pressure, temperature or corrosive environment. The application is not limited in this regard.

In addition, the first recovery valve 251 may be a butterfly valve, a ball valve, or a solenoid valve, which is not limited in the present application.

The second tank 30 may include an outlet for filling the second tank 30 with the detection gas, and an inlet for discharging the detection gas from the first tank 10.

Thus, when the gas detection and filling device 100 fills the device to be detected with the detection gas, the first recovery valve 251 may be opened, so that the first recovery valve 251 conducts the first recovery pipeline 25, and the detection gas in the device to be detected may be recovered to the second tank 30 through the first recovery pipeline 25. After the detection gas is recovered, the first recovery valve is closed, so that the first recovery valve 251 seals the first recovery line 25. Thus, not only the detection gas can be prevented from escaping into the air through the filling gun 212, but also the residual detection gas can be recovered, and waste is avoided.

In some embodiments of the present application, as shown in fig. 1 and 8, the filling device 20 further includes a second recovery line 26, a first evacuation pump 262, a first buffer tank 263 and a second recovery valve 261, one end of the second recovery line 26 is communicated with the connection line 211, the other end of the second recovery line 26 is communicated with the inlet of the second tank 30, the first evacuation pump 262 is provided in the second recovery line 26, the first buffer tank 263 is provided between the first evacuation pump 262 and the connection line 211, the second recovery valve 261 is provided in the second recovery line 26, and the first buffer tank 263 is provided between the second recovery valve 261 and the first evacuation pump 262.

The second recovery valve 261 may be a butterfly valve, a ball valve, or an electromagnetic valve, which is not limited in the present application.

The first pump 262 may be a rotary vane pump, a centrifugal pump, a dry pump, or the like, which is not limited in the present application.

The first buffer tank 263 may be a diaphragm buffer tank or an air bag buffer tank, which is not limited in the present application.

In this way, after the detection gas in the connection line 211 is recovered by the first recovery line 25, a part of residual detection gas still exists in the connection line 211 and the inflator assembly 21. At this time, the second recovery valve may be opened so that the second recovery valve 261 turns on the second recovery line 26.

Then, the first pump 262 is started to recover the residual detection gas to the second tank 30 through the second recovery pipeline 26, and after the recovery of the residual detection gas is completed, the second recovery valve is closed, so that the second recovery pipeline 26 is plugged by the second recovery valve 261, and the second recovery valve is closed, so that the residual detection gas is recovered more thoroughly in the connecting pipeline 211 and the inflation assembly 21.

The first buffer tank 263 is arranged between the first evacuation pump 262 and the connecting pipeline 211, so that the first buffer tank 263 can buffer the pressure of the second recovery pipeline 26 to stabilize the pressure in the second recovery pipeline 26, and the damage to the filling device 20 caused by the large pressure change in the second recovery pipeline 26 when the first evacuation pump 262 works is avoided.

In one possible structural design, as shown in fig. 1 and 9, a second recovery valve 261 is disposed between the second tank 30 and the first evacuation pump 262.

In this way, when the second recovery valve 261 blocks the second recovery pipeline 26, the detection gas in the second tank 30 can be prevented from flowing into the first pump 262 and the first buffer tank 263, so that the pressure inside the first buffer tank 263 and the first pump 262 is higher, and the service lives of the first pump 262 and the first buffer tank 263 are prevented from being affected.

In some embodiments of the present application, as shown in fig. 1 and 10, the filling device 20 further includes an evacuation line 27, a second evacuation pump 271, a second buffer tank 272, and an evacuation valve 273, one end of the evacuation line 27 is communicated with the connection line 211 for discharging the detection gas in the connection line 211, the second evacuation pump 271 is provided to the evacuation line 27, the second buffer tank 272 is provided between the second evacuation pump 271 and the connection line 211, the evacuation valve 273 is provided to the evacuation line 27, and the second buffer tank 272 is provided between the evacuation valve 273 and the second evacuation pump 271.

The second recovery valve 261 may be a butterfly valve, a ball valve, or an electromagnetic valve, which is not limited in the present application.

The first pump 262 may be a rotary vane pump, a centrifugal pump, a dry pump, or the like, which is not limited in the present application.

The first buffer tank 263 may be a diaphragm buffer tank or an air bag buffer tank, which is not limited in the present application.

In this way, before the device to be detected is filled with the detection gas, the evacuation valve 273 can be opened, and the second evacuation pump 271 is started, so that the second evacuation pump 271 can pump out the air in the device to be detected, and the air in the device to be detected is discharged through the evacuation pipeline 27, so that the concentration of the detection gas is prevented from being influenced by the air in the device to be detected, deviation of the detection result occurs, and the detection precision of the device to be detected is improved. The second buffer tank 272 is disposed in the evacuation pipeline 27, the second buffer tank 272 is disposed between the second evacuation pump 271 and the connection pipeline 211, and the second buffer tank 272 can stabilize the pressure in the evacuation pipeline 27, so as to avoid damage to the filling device 20 due to large pressure variation in the evacuation pipeline 27 when the second evacuation pump 271 works.

In some embodiments of the present application, as shown in fig. 2 and 11, the inflation assembly 21 further includes a vacuum gauge 215, the vacuum gauge 215 being provided in the connection line 211, and/or the inflation device 20 further includes a second pressure reducing valve 221, the second pressure reducing valve 221 being provided in the main inflation conduit 22.

The second pressure reducing valve 221 may be a diaphragm type, an inner spring piston type, a combined type, an acting type, a piston type, a direct acting type, a pilot type, or the like, which is not limited in the present application.

Thus, the vacuum gauge 215 can detect the vacuum degree in the connecting pipe 211, when the detected gas in the connecting pipe 211 is recovered, the first recovery valve 251 can plug or conduct the first recovery pipe 25 according to the detection result of the vacuum gauge 215, and the second recovery valve 261 can plug or conduct the second recovery pipe 26 according to the detection result of the vacuum gauge 215.

When the detection gas in the first tank 10 flows to the first filling pipeline 23 and the second filling pipeline 24, the pressure is reduced through the second pressure reducing valve 221, so that the pressure of the detection gas passing through the first filling pipeline 23 and the second filling pipeline 24 can be reduced, the detection gas is prevented from being excessively high to cause larger impact on the first filling pipeline 23 and the second filling pipeline 24, and the pressure of the detection gas in the first tank 10 can be reduced through the second pressure reducing valve 221 when the detection gas enters the first filling pipeline 23 and the second filling pipeline 24, and the damage to the filling device 20 caused by the excessively high detection gas pressure in the first tank 10 is avoided.

In one possible design, as shown in FIGS. 2 and 12, the inflation assembly 21 further includes a check valve 216, the check valve 216 being disposed between the vacuum gauge 215 and the connecting line 211.

Thus, when the vacuum gauge 215 is not required to operate, the detection valve 216 can be closed, so that the vacuum gauge 215 is prevented from being operated for a long time, and the service life of the vacuum gauge 215 is reduced.

In some embodiments of the present application, as shown in fig. 13, the number of the filling devices 20 is two, and the main inflation lines 22 of both the filling devices 20 are in communication with the outlet of the first tank 10.

Wherein the first recovery line 25 and the second recovery line 26 of both charging devices 20 are in communication with the inlet of the second tank 30.

It should be noted that the two filling devices 20 may be the same or different, and the present application is not limited thereto.

In this way, the gas detecting and filling device 100 is provided with two filling devices 20, so that the gas detecting and filling device 100 can simultaneously fill the two devices to be detected with the detecting gas, and the two filling devices 20 can simultaneously fill the same device to be detected with the detecting gas, thereby improving the filling efficiency of the gas detecting and filling device 100.

In one possible design, as shown in fig. 14, the first tank 10 further comprises an outlet pipe 11 and an outlet valve 12, one end of the outlet pipe 11 is communicated with the outlet of the first tank 10, the other end of the outlet pipe 11 is communicated with the main air charging pipe 22, the outlet valve 12 is arranged with the outlet pipe 11, the outlet valve 12 is used for communicating or blocking the outlet pipe 11, and/or the second tank 30 further comprises an inlet pipe 31 and an inlet valve 32, one end of the inlet pipe 31 is communicated with the inlet of the second tank 30, the other end of the inlet pipe 31 is communicated with the first recovery pipe 25 and the second recovery pipe 26, the inlet valve 32 is arranged with the inlet pipe 31, and the inlet valve 32 is used for communicating or blocking the inlet pipe 31.

In this way, when the detection gas is not required to be filled, the outlet valve 12 can be made to seal the outlet pipeline 11, so as to avoid the leakage of the detection gas in the first tank 10, and when the detection gas is not required to be recovered, the inlet valve 32 can be made to seal the inlet pipeline 31, so as to avoid the leakage of the detection gas in the second tank 30.

In some embodiments of the present application, the gas detection filling device 100 is controlled by a PLC system, and the system performs various actions according to a PLC system preset program, and the operation and running state information of the gas detection filling device 100 are completed and displayed on a touch screen.

Thus, the PLC system control provides three working modes of automatic operation, manual step-by-step operation and manual maintenance, which are respectively applicable to different situations, and the system works in the automatic mode under the general condition, and can be manually operated step-by-step after equipment fails. The test, maintenance and overhaul can be operated in a manual maintenance mode, and the working state is displayed.

During operation of the gas detection filling apparatus 100, the PLC system control will monitor and display the operating conditions of the gas detection filling apparatus 100 and the operating status of the major key components, such as the first pressure reducing valve 231, the first evacuation pump 262, and the vacuum gauge 215.

Various faults and warning information in the operation of the gas detection filling equipment 100 are given an alarm prompt in real time on line, the alarm adopts an acousto-optic synchronous reminding mode, an alarm indicator lamp on an operation box is lightened, a buzzer sounds long, and specific information is displayed on a touch screen.

The PLC system controls the statistics of the operation time of the components of the gas detection filling apparatus 100, such as the first pressure reducing valve 231, the first valve 232, the first evacuation pump 262, etc., and when the statistics exceeds the set time, the PLC system controls the alarm to prompt the maintenance of the gas detection filling apparatus 100, and after the maintenance, the zero clearing of the operation time can be performed.

Although the application is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a study of the drawings, the disclosure, and the appended claims. In the claims, the term "comprising" (compr i s i ng) does not exclude other elements or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A gas detection filling apparatus, comprising:

The first tank body is used for storing detection gas;

A filling device comprising:

The inflation assembly is used for inflating the detection gas to the equipment to be detected;

One end of the main air charging pipeline is connected to the outlet of the first tank body;

One end of the first filling pipeline is communicated with the other end of the main inflation pipeline, and the other end of the first filling pipeline is communicated with the inflation assembly;

One end of the second filling pipeline is communicated with the other end of the main inflation pipeline, and the other end of the second filling pipeline is communicated with the inflation assembly;

And the second valve is arranged on the second filling pipeline and used for conducting or blocking the second filling pipeline.

2. A gas detection charging apparatus according to claim 1, wherein the charging means further comprises:

the first valve is arranged on the first filling pipeline and is used for conducting or blocking the first filling pipeline.

3. A gas detection charging apparatus according to claim 2, wherein the first pressure relief valve is provided between the main charging conduit and the first valve.

4. A gas detection charging apparatus as claimed in claim 1, wherein the charging assembly comprises:

The other end of the first filling pipeline and the other end of the second filling pipeline are communicated with the connecting pipeline;

The filling gun is communicated with the connecting pipeline and used for filling the detection gas to the equipment to be detected.

5. A gas detection filling apparatus according to claim 4, the gas detection filling equipment is characterized by further comprising a second tank body;

The filling device further comprises:

One end of the first recovery pipeline is communicated with the connecting pipeline, and the other end of the first recovery pipeline is communicated with the inlet of the second tank body;

the first recovery valve is arranged on the first recovery pipeline and is used for conducting or plugging the first recovery pipeline.

6. A gas detection charging apparatus according to claim 5, wherein said charging means further comprises:

One end of the second recovery pipeline is communicated with the connecting pipeline, and the other end of the second recovery pipeline is communicated with the inlet of the second tank body;

the first evacuation pump is arranged on the second recovery pipeline;

a first buffer tank arranged on the second recovery pipeline, the first buffer tank is arranged between the first evacuation pump and the connecting pipeline;

The second recovery valve is arranged on the second recovery pipeline, and the first buffer tank is arranged between the second recovery valve and the first evacuation pump.

7. A gas detection charging apparatus as defined in claim 4, wherein said charging means further comprises:

One end of the evacuation pipeline is communicated with the connecting pipeline and is used for discharging detection gas in the connecting pipeline;

The second evacuation pump is arranged on the evacuation pipeline;

A second buffer tank arranged on the evacuating pipeline, the second buffer tank is arranged between the second evacuation pump and the connecting pipeline;

And the evacuation valve is arranged on the evacuation pipeline, and the second buffer tank is arranged between the evacuation valve and the second evacuation pump.

8. The gas detection charging apparatus of claim 4, wherein said charging assembly further comprises:

the vacuum gauge is arranged on the connecting pipeline;

and/or, the filling device further comprises:

and the second pressure reducing valve is arranged on the main gas charging pipeline.

9. A gas detection filling apparatus according to any one of claims 1-8, wherein the number of filling means is two, the main filling pipes of both filling means being in communication with the outlet of the first tank.

10. A gas detection filling apparatus, comprising:

The first tank body is used for storing detection gas;

A filling device comprising:

The inflation assembly is used for inflating the detection gas to the equipment to be detected;

One end of the main air charging pipeline is connected to the outlet of the first tank body;

One end of the first filling pipeline is communicated with the other end of the main inflation pipeline, and the other end of the first filling pipeline is communicated with the inflation assembly;

One end of the second filling pipeline is communicated with the other end of the main inflation pipeline, and the other end of the second filling pipeline is communicated with the inflation assembly;

the inflation pressure of the first inflation pipeline is smaller than that of the second inflation pipeline, and after the first inflation pipeline inflates the equipment to be detected, the equipment to be detected is inflated through the second inflation pipeline.