CN218566809U - Efficient vacuum quick pumping and detecting device - Google Patents
Efficient vacuum quick pumping and detecting device Download PDFInfo
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- CN218566809U CN218566809U CN202221817971.1U CN202221817971U CN218566809U CN 218566809 U CN218566809 U CN 218566809U CN 202221817971 U CN202221817971 U CN 202221817971U CN 218566809 U CN218566809 U CN 218566809U
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Abstract
The application relates to the technical field of vacuum liquid storage tanks, and particularly discloses a high-efficiency vacuum quick-pumping and detecting device which comprises a helium cover, wherein the helium cover is hermetically covered on the liquid storage tank; an auto helium charging mechanism in sealed communication with the helium enclosure to deliver helium gas into the helium enclosure; the detection mechanism comprises an air pump set and a helium mass spectrometer, the air pump set is communicated with the interlayer of the liquid storage tank, and the helium mass spectrometer is arranged on the air pump set. This application is through automatic helium filling mechanism to carrying nitrogen gas in the helium cover, and detection mechanism detects the content of helium in the pumped gas when extracting the interior gas of liquid storage tank, if helium content exceedes the threshold value, then explains that there is the rosin joint in the evacuation pipeline in the liquid storage tank.
Description
Technical Field
The application relates to the technical field of vacuum liquid storage tanks, in particular to a high-efficiency vacuum quick pumping and detecting device.
Background
With the increasing expansion of the market range of low-temperature liquid, the sales volume of liquid oxygen, liquid argon, liquid nitrogen, liquid carbon dioxide, LNG natural gas, liquid hydrogen and liquid helium is greatly increased, and further, the low-temperature liquid storage tank is greatly used in various fields. The liquid storage tank can store low-temperature liquid for a long time without evaporation after being vacuumized, and therefore a vacuum interlayer and a vacuum pipeline are reasonably preset in the liquid storage tank.
Because the inner shell and the outer shell of the storage tank and the pipeline inside the interlayer are welded, the quality of all welding seams in the vacuum cavity is detected through X-ray shooting, and the quality of the welding seams is further detected by performing vacuumizing helium detection on the interlayer. A helium mass spectrometer detector is arranged on the vacuumized pipeline, and in the previous vacuumizing process, a detection person holds a spray gun to spray helium around a welding line. And detecting and displaying the related content of helium contained in the extracted gas by using a helium mass spectrometer so as to determine whether the welding seam has a welding defect.
Chinese patent with publication number CN216046839U discloses a vacuum-pumping pipeline structure of a liquid storage tank, which comprises a liquid storage tank, wherein the liquid storage tank comprises an outer shell, an interlayer and an inner shell, the interlayer is internally surrounded by the inner shell and is uniformly provided with vacuum-pumping branch pipes, holes are respectively arranged on the vacuum-pumping branch pipes, and the vacuum-pumping branch pipes are connected with each other through a vacuum-pumping confluence pipe.
The vacuumizing process greatly reduces the time required for vacuumizing, all welding seams cannot be effectively detected due to the fact that manual detection is slow, the required time is long, helium is expensive and waste is large, and errors, omission and the like easily exist in manual detection. In addition, in the conventional detection process, because the storage tank and the pipeline are different in position in the liquid storage tank, the liquid storage tank needs to be rolled back and forth, the position of the liquid storage tank needs to be adjusted, personnel can walk back and forth, the liquid storage tank is easily damaged, and the appearance quality of the liquid storage tank is finally damaged.
SUMMERY OF THE UTILITY MODEL
In order to detect the quality of the welding line of the pipeline in the shell and the interlayer in the whole liquid storage tank rapidly, accurately and thoroughly, the technical scheme of the application provides a high-efficiency vacuum rapid pumping and detection device. The technical scheme is as follows:
the application provides a high-efficiency vacuum quick-pumping and detecting device, which comprises a helium cover, wherein the helium cover is hermetically covered on a liquid storage tank; an auto helium charging mechanism in sealed communication with the helium enclosure to deliver helium gas into the helium enclosure; the detection mechanism comprises an air pump set and a helium mass spectrometer, the air pump set is communicated with the interlayer of the liquid storage tank, and the helium mass spectrometer is arranged on a pipeline of the air pump set.
Further, still include heating mechanism, heating mechanism includes intake pipe, outlet duct and electric heater, the intake pipe communicate in electric heater's inlet end with between the connector of the inner bag one end head of liquid storage pot, the outlet duct communicate in electric heater's the end of giving vent to anger with between the connector of the inner bag one end head of liquid storage pot, be equipped with the fan in the intake pipe.
Specifically, the liquid storage pot is the level setting, the liquid storage pot below is equipped with rotates and lifts the mechanism, it includes two bearing rollers that can open a shelves size regulation, roll to rotate and lift the mechanism the bearing roller all with the liquid storage pot pastes mutually to lift, roll the liquid storage pot.
Particularly, the automatic helium filling mechanism comprises a helium source and an inflation tube communicated between the helium source and the helium cover, the helium mass spectrometer is arranged on the inflation tube, and an automatic valve and an instrument are further arranged on the inflation tube to control the on-off of nitrogen in the inflation tube.
The automatic valve is characterized by further comprising a helium detector arranged in the helium cover, wherein the helium detector is electrically connected with the automatic helium filling mechanism through a control system so as to control the automatic valve to open and close.
Specifically, the helium detector is located below the horizontal center line of the liquid storage tank, and the two ends of the liquid storage tank are respectively provided with one helium detector.
Particularly, the helium cover comprises a fixing frame and a sealing film, the sealing film is wrapped on the fixing frame to form a sealing cover body, and an automatic rolling wheel is arranged at the bottom end of the fixing frame.
Specifically, the fixing frame is of a steel structure, and the sealing film is a high-sealing-performance plastic film.
Compared with the prior art, the application has the beneficial effects that: the liquid storage tank is horizontally arranged, the helium cover is covered on the liquid storage tank to form a closed cavity, signals are sent according to the helium concentration meter control system, and the helium source conveys or closes helium into the helium cover through the gas filling pipe according to the signals to ensure the concentration of the helium in the cover. Meanwhile, the electric heater is matched with the fan, so that the temperature in the inner shell of the liquid storage tank is increased, and the interlayer is more quickly and thoroughly vacuumized. When the concentration of nitrogen in the helium cover meets fifty percent, the gas in the interlayer of the liquid storage tank is being extracted by the gas extractor set, and the existence and the content of helium in the extracted gas are monitored by the helium mass spectrometer in real time so as to verify whether the welding quality problem exists in the inner shell or the outer shell of the liquid storage tank or the vacuum interlayer pipeline. If no helium component exists, the welding of the inner shell, the outer shell and the interlayer pipeline of the liquid storage tank is qualified. To sum up, this application can detect out the welding seam quality of pipeline in inside and outside welding seam and the vacuum interlayer of stock solution jar fast, accurate, harmless, has improved the speed of vacuum storage pot evacuation simultaneously greatly.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application, in which:
fig. 1 is a schematic view of the overall structure of the present application.
Reference numerals are as follows: 1. a helium shield; 101. automatically turning over the roller; 2. an air extractor set; 3. a detection tube; 4. a helium mass spectrometer; 5. a source of helium; 6. an inflation tube; 7. a helium gas detector; 8. a PLC electrical control cabinet; 9. rotating the lifting mechanism; 10. an air outlet pipe; 11. an electric heater; 12. an air inlet pipe; 13. a fan.
Detailed Description
The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
With the increasing expansion of the market range of low-temperature liquid, the sales of liquid oxygen, liquid argon, liquid nitrogen, liquid carbon dioxide, LNG natural gas, liquid hydrogen and liquid helium are greatly increased, and further the large-scale use of the low-temperature liquid in related industries is promoted. The liquid storage tank can store low-temperature liquid for a long time after being vacuumized, and evaporation loss is reduced, so that a reasonable vacuum interlayer and a vacuum pipeline are arranged in the liquid storage tank.
Because the inner shell and the outer shell of the storage tank and the pipeline inside the interlayer are welded, the quality of all welding seams in the vacuum cavity is detected through X-ray shooting, and the quality of the welding seams is further detected by performing vacuumizing helium detection on the interlayer. A helium mass spectrometer is arranged on the vacuumized pipeline, and in the previous vacuuming process, a tester holds a spray gun by hand to spray helium around a welding line. And the helium mass spectrometer detects and displays the related content of helium contained in the extracted gas so as to determine whether the welding seam has welding defects.
Chinese patent with publication number CN216046839U discloses a vacuum pumping pipeline structure of a liquid storage tank, which comprises a liquid storage tank, wherein the liquid storage tank comprises an outer shell, an interlayer and an inner shell, the interlayer is internally surrounded by the inner shell and is uniformly provided with vacuum pumping branch pipes, the vacuum pumping branch pipes are all provided with holes, and the vacuum pumping branch pipes are connected with each other through a vacuum pumping converging pipe.
The vacuumizing process greatly reduces the time required for vacuumizing, all welding seams cannot be effectively detected due to the fact that manual detection is slow, the required time is long, helium is expensive and waste is large, and errors, omission and the like easily exist in manual detection. In addition, in the conventional detection process, because the storage tank and the pipeline are different in position in the liquid storage tank, the liquid storage tank needs to be rolled back and forth, the position of the liquid storage tank needs to be adjusted, personnel can walk back and forth, the liquid storage tank is easily damaged, and the appearance quality of the liquid storage tank is finally damaged.
In order to detect the quality of the welding line of the pipeline in the shell and the interlayer in the whole liquid storage tank rapidly, accurately and thoroughly, the technical scheme of the application provides a high-efficiency vacuum rapid pumping and detection device. The technical scheme is as follows:
the present application is described in further detail below with reference to fig. 1.
As shown in figure 1, the application provides a high-efficient vacuum is taken out soon and detection device, including helium cover 1, automatic helium filling mechanism and detection mechanism, helium cover 1 sealed cowling is established on the liquid storage pot, and automatic helium filling mechanism and helium cover 1 sealed intercommunication, detection mechanism and the interior evacuation pipeline intercommunication of predetermineeing of liquid storage pot.
During detection, the liquid storage tank is horizontally arranged, the automatic helium filling mechanism conveys helium gas into the helium cover 1, and the detection mechanism detects whether helium gas exists in the extracted gas and the content of the helium gas while the gas in the liquid storage tank is extracted, so that whether welding defects exist in pipelines of an inner shell, an outer shell and an interlayer of the liquid storage tank or not is described.
As shown in fig. 1, the helium tank 1 includes a fixing frame and a sealing film, the fixing frame is made of steel, the sealing film is wrapped on the fixing frame to form a tank body, and when the helium tank 1 is placed on the ground, the sealing tank body is formed. Preferably, the sealing film is a high-sealability plastic film. In order to facilitate the movement of the detection device, the bottom end of the fixing frame is provided with a plurality of automatic rolling wheels 101, and the automatic rolling wheels 101 can be universal wheels with self-locking function.
As shown in fig. 1, the detection mechanism includes a gas pump set 2 and a helium mass spectrometer 4, the gas pump set 2 is placed on the ground, in this embodiment, the gas pump set 2 may be a vacuum pump. The gas pumping unit 2 is also connected with a detection tube 3 penetrating the helium cover 1, and the detection tube 3 is communicated between the gas pumping unit 2 and a vacuum pumping pipeline preset in the liquid storage tank. The helium mass spectrometer 4 is provided on the detection tube 3, and detects the helium concentration of the gas in the detection tube 3.
As shown in fig. 1, the automatic helium charging mechanism includes a helium gas source 5 and a gas filling tube 6, and the helium gas source 5 may be a helium gas cylinder. The gas-filled tube 6 is communicated between the gas outlet of the helium bottle and the helium cover 1, and the gas-filled tube 6 is provided with an automatic valve to control the on-off of the nitrogen in the gas-filled tube 6. The gas tube 6 is also provided with an instrument which is a pressure gauge for monitoring the pressure in the gas tube 6.
As shown in fig. 1, in consideration of the inspection effect and the expensive cost of helium, helium is saved on the premise of meeting the detection requirement, and when the concentration of helium in the helium cover 1 reaches a certain value, the input of helium can be stopped, for this purpose, a helium detector 7 is arranged in the helium cover 1, and the helium detector 7 is electrically connected to an automatic valve on the gas filling pipe 6 through a control system, which is a PLC electric control cabinet 8 in the embodiment.
The helium detector 7 detects the helium concentration in the helium hood 1 in real time, when the helium concentration is greater than or equal to fifty percent, the PLC electrical control cabinet 8 sends a signal, the automatic valve is closed, and the gas filling pipe 6 stops conveying helium into the helium hood 1. When the helium concentration is less than fifty percent, the PLC electric control cabinet 8 sends a signal, the automatic valve is opened, and the helium is continuously conveyed into the helium cover 1 through the gas-filled tube 6, so that the automation degree is improved.
As shown in figure 1, in order to further save the required helium and ensure the detection accuracy, a helium detector 7 is arranged below the horizontal central line of the liquid storage tank, and the helium detector 7 is arranged at both ends of the liquid storage tank. In addition, a rotating lifting mechanism 9 is arranged below the liquid storage tank, and two rotating lifting mechanisms 9 are arranged along the axial direction of the liquid storage tank. Each rotary lifting mechanism 9 comprises two carrier rollers capable of being shifted and adjusted in size and rolling, the two carrier rollers are attached to the liquid storage tank to lift and roll the liquid storage tank, and the liquid storage tank can be automatically rolled according to detection requirements.
Because the position below the horizontal central line of the liquid storage tank in the helium cover 1 meets the detection requirement, the self-rotation of the liquid storage tank is realized through the lifting mechanism, the position of the liquid storage tank is convenient to adjust, and the detection requirements of detection pipelines at different positions in the liquid storage tank are met.
As shown in fig. 1, the detection device further comprises a heating mechanism, and the heating mechanism comprises an air outlet pipe 10, an electric heater 11 and an air inlet pipe 12. The electric heater 11 is placed on the ground, the air inlet pipe 12 is communicated between the air inlet end of the electric heater 11 and a connector of a seal head at the other end of the liquid storage tank, the air outlet pipe 10 is communicated between the air outlet end of the electric heater 11 and the connector of the seal head at the other end of the liquid storage tank, and the air inlet pipe 12 is provided with a fan 13.
The implementation principle of the application is as follows: the liquid storage tank is horizontally arranged, the helium cover 1 is covered on the liquid storage tank to form a closed cavity, the PLC electrical control cabinet 8 sends signals, and the helium bottle continuously conveys helium gas into the helium cover 1 through the gas-filled tube 6. Meanwhile, the electric heater 11 is matched with the fan 13, so that the temperature of the inner shell of the liquid storage tank is increased, and the interior of the interlayer is effectively heated to increase the temperature.
When the concentration of nitrogen in the helium cover meets fifty percent, the vacuum pump pumps gas in the interlayer of the liquid storage tank through the detection tube 3, and the helium mass spectrometer 4 monitors the existence and the content of helium in the detection tube 3 in real time to verify whether the welding quality problem exists in the outer shell of the liquid storage tank or the vacuum interlayer pipeline. If no helium component exists, the welding of the inner shell and the outer shell of the liquid storage tank and the interlayer pipeline is qualified. To sum up, this application can detect out the welding seam quality of pipeline in inside and outside welding seam and the vacuum interlayer of stock solution jar fast, accurate, harmless, has improved the speed of vacuum storage pot evacuation simultaneously greatly.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (8)
1. The utility model provides a high-efficient vacuum is taken out soon and detection device which characterized in that includes:
the helium cover is hermetically covered on the liquid storage tank;
an auto helium charging mechanism in sealed communication with the helium enclosure to deliver helium gas into the helium enclosure;
the detection mechanism comprises an air pump set and a helium mass spectrometer, the air pump set is communicated with the interlayer of the liquid storage tank, and the helium mass spectrometer is arranged on a pipeline of the air pump set.
2. The device according to claim 1, further comprising a heating mechanism, wherein the heating mechanism comprises an air inlet pipe, an air outlet pipe and an electric heater, the air inlet pipe is communicated between an air inlet end of the electric heater and a connector of an end socket at one end of the inner container of the liquid storage tank, the air outlet pipe is communicated between an air outlet end of the electric heater and the connector of the end socket at one end of the inner container of the liquid storage tank, and the air inlet pipe is provided with a fan.
3. The vacuum rapid-pumping and detecting device as claimed in claim 1, wherein the liquid storage tank is horizontally disposed, a rotating lifting mechanism is disposed below the liquid storage tank, the rotating lifting mechanism includes two rollers capable of being shifted and adjusted in size and rolling, and the two rollers are attached to the liquid storage tank to lift and roll the liquid storage tank.
4. The apparatus as claimed in claim 1, wherein the automatic helium charging mechanism comprises a helium source and an inflation tube connected between the helium source and the helium cover, the helium mass spectrometer is disposed on the inflation tube, and the inflation tube is further provided with an automatic valve and an automatic meter for controlling the on/off of nitrogen in the inflation tube.
5. The apparatus as claimed in claim 4, further comprising a helium gas detector disposed in the helium enclosure, wherein the helium gas detector is electrically connected to the automatic helium charging mechanism through a control system to control the automatic valve to open and close.
6. The apparatus as claimed in claim 5, wherein the helium detector is located below the horizontal centerline of the liquid storage tank, and the helium detector is located at both ends of the liquid storage tank.
7. The efficient vacuum fast pumping and detecting device as claimed in claim 1, wherein the helium cover comprises a fixing frame and a sealing film, the sealing film is wrapped on the fixing frame to form a sealing cover body, and an automatic rolling wheel is arranged at the bottom end of the fixing frame.
8. The vacuum rapid pumping and detecting device as claimed in claim 7, wherein the fixing frame is made of steel, and the sealing film is a plastic film with high sealing performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221817971.1U CN218566809U (en) | 2022-07-14 | 2022-07-14 | Efficient vacuum quick pumping and detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221817971.1U CN218566809U (en) | 2022-07-14 | 2022-07-14 | Efficient vacuum quick pumping and detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN218566809U true CN218566809U (en) | 2023-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221817971.1U Active CN218566809U (en) | 2022-07-14 | 2022-07-14 | Efficient vacuum quick pumping and detecting device |
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| CN (1) | CN218566809U (en) |
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2022
- 2022-07-14 CN CN202221817971.1U patent/CN218566809U/en active Active
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