CN211889398U - Automatic monitoring device for oxygen content of plasma welding box - Google Patents
Automatic monitoring device for oxygen content of plasma welding box Download PDFInfo
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- CN211889398U CN211889398U CN202020291762.2U CN202020291762U CN211889398U CN 211889398 U CN211889398 U CN 211889398U CN 202020291762 U CN202020291762 U CN 202020291762U CN 211889398 U CN211889398 U CN 211889398U
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Abstract
The utility model discloses an automatic monitoring device for oxygen content of a plasma welding box, which comprises the plasma welding box and an oxygen detector, wherein a vacuum ball valve is arranged on a corresponding interface of the plasma welding box, the other interface of the vacuum ball valve is sequentially connected with a vacuum pressure switch, an electromagnetic vacuum baffle valve, a vacuum filter and a one-way valve, the air outlet end of the one-way valve is connected with an air inlet of a dry vacuum pump, and the air outlet of the dry vacuum pump is sequentially connected with a secondary filter, a flow valve and the oxygen detector; in the electrical connection relation, the oxygen detector and the vacuum pressure switch are connected in parallel at the output end of the power switch, and the electromagnetic vacuum baffle valve and the dry vacuum pump are connected in parallel at the normally open contact of the vacuum pressure switch. The utility model discloses can realize the oxygen content in the on-line monitoring plasma welding incasement to guarantee to produce qualified titanium alloy product.
Description
Technical Field
The utility model relates to a titanium alloy preparation technical field, concretely relates to plasma welding case oxygen content automatic monitoring device mainly realizes that plasma welding case automatic monitoring oxygen content under negative pressure vacuum environment.
Background
The titanium alloy is an extremely important light structural material, has very important application value in the fields of military industry, aerospace, nuclear power industry, petrochemical industry, biomedical engineering and the like, and belongs to the strategic emerging industry of China.
The plasma welding box is one of the more critical devices used in the titanium alloy processing technology, and particularly needs to be used for welding an electrode. Because titanium alloy materials are very easy to oxidize in the welding process, plasma welding needs to be vacuumized to an absolute vacuum value below 5Pa, then welding is carried out in a negative pressure protection environment filled with high-purity argon, if the oxygen content in a plasma welding box exceeds the standard due to pipeline leakage or impure argon quality in the welding process, the oxygen content of the titanium alloy materials can be influenced, finally the examined titanium alloy materials are unqualified in performance, and the tensile strength, the plasticity, the fracture toughness and the like of the materials are influenced. Because the processing technology of the titanium alloy material is irreversible, the titanium alloy with the excessive oxygen content can only be judged as a waste product, which is a waste for both cost and resources.
The common oxygen detector is generally used under micro-positive pressure regulation, even if a sampling vacuum pump is additionally arranged between the oxygen detector and a welding box, the oxygen detector can only be used under the micro-negative pressure condition, and when the vacuum value of the plasma welding box is lower than 2000Pa, the sampling vacuum pump can suck back to cause the increase of the oxygen content of the welding box. Therefore, there is a need for an apparatus capable of monitoring oxygen content on-line to ensure that a qualified titanium alloy product is produced.
Disclosure of Invention
The utility model aims at providing a plasma welding case oxygen content automatic monitoring device that structural design is reasonable not enough to above-mentioned prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme: an automatic monitoring device for oxygen content of a plasma welding box comprises the plasma welding box and an oxygen detector, and is characterized in that a vacuum ball valve is arranged on a corresponding interface of the plasma welding box, the other interface of the vacuum ball valve is sequentially connected with a vacuum pressure switch, an electromagnetic vacuum baffle valve, a vacuum filter and a one-way valve through a plurality of sections of vacuum tubes, the air outlet end of the one-way valve is connected with an air inlet of a dry vacuum pump, and the air outlet of the dry vacuum pump is sequentially connected with a secondary filter, a flow valve and the oxygen detector through the vacuum tubes and a connector; in the electrical connection relation, the oxygen detector and the vacuum pressure switch are connected in parallel at the output end of the power switch, and the electromagnetic vacuum baffle valve and the dry vacuum pump are connected in parallel at the normally open contact of the vacuum pressure switch.
Compared with the prior art, the utility model discloses the beneficial effect who possesses is:
1. the vacuum ball valve is used for isolating the plasma welding box from other parts, so that the phenomenon that the oxygen content of the welding box is increased due to suck-back is effectively prevented;
2. by setting the vacuum pressure switch and setting the starting pressure of the vacuum pressure switch to 30000Pa, the vacuum pressure switch can only act when the pressure is higher than 30000Pa, and the electromagnetic vacuum baffle valve, the dry vacuum pump and the like connected with the vacuum pressure switch can only be electrified to work, so that the suck-back phenomenon of the vacuum pump is effectively prevented;
3. the dust and dirt generated in the welding process is effectively filtered through the arrangement of a vacuum filter, a secondary filter and the like;
4. through the arrangement of the one-way valve, gas is effectively prevented from flowing back into the plasma welding box, and the oxygen content in the plasma welding box is protected from being damaged;
5. through the setting of flow valve to adjustment gas flow is in oxygen detector requirement scope, makes the oxygen detector just can detect the oxygen content in the plasma welding case.
The utility model discloses connect all the time on the interface of plasma welding case, can realize the oxygen content in the on-line monitoring plasma welding case to guarantee to produce qualified titanium alloy product.
Drawings
FIG. 1 is a schematic view of the structural connection of the present invention
Fig. 2 is a schematic diagram of the electrical connection according to the present invention.
Detailed Description
The invention will now be further elucidated with reference to the drawing. The following are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent or similar replacement without departing from the scope of the present invention shall fall within the protection scope of the present invention. And the details which are not described below are all carried out by the prior art or the conventional techniques.
As shown in fig. 1-2, the utility model provides a plasma welding case oxygen content automatic monitoring device, including plasma welding case, vacuum ball valve 1, vacuum pressure switch 2, electromagnetism vacuum flapper valve 3, vacuum filter 4, check valve 5, oxygen detector 6, flow valve 7, secondary filter 8, dry vacuum pump 9, switch 10. A vacuum ball valve 1 is fixedly installed on a corresponding interface of the plasma welding box in a hoop mode, the other interface of the vacuum ball valve 1 is sequentially butted with a vacuum pressure switch 2, an electromagnetic vacuum baffle valve 3, a vacuum filter 4 and a one-way valve 5 through vacuum tubes and related joints and locked by the hoop, an air outlet end of the one-way valve 5 is also connected with an air inlet of a dry vacuum pump 9 in a hoop fixing mode, and an air outlet of the dry vacuum pump 9 is sequentially butted with a secondary filter 8, a flow valve 7 and an oxygen detector 6 through vacuum tubes and joints and locked by the hoop; in the electrical connection relation, the oxygen detector 6 and the vacuum pressure switch 2 are connected in parallel at the output end of the power switch 10, the electromagnetic vacuum flapper valve 3 and the dry vacuum pump 9 are connected in parallel at the normally open contact of the vacuum pressure switch 2, and the electromagnetic vacuum flapper valve 3 and the dry vacuum pump 9 are both 220V working voltage.
Default interface, joint in the above-mentioned this application are 16 in the internal diameter, the vacuum quick-operation joint of 25 in the external diameter.
When the oxygen detector works, the power switch 10 is switched on to supply power, and the oxygen detector 6 is electrified to start. The vacuum ball valve 1 is used for gas isolation between the plasma welding box and other parts of the device, the vacuum pressure switch 2 ensures that the device normally works (specifically, the action point is set to be 30000Pa according to the process requirement) when the pressure in the plasma welding box is higher than 30000Pa, the vacuum pressure switch does not work when the vacuum pressure in the plasma welding box is lower than 30000Pa, the electromagnetic vacuum baffle valve 3 and the dry vacuum pump 9 do not work, when the vacuum pressure in the plasma welding box is higher than 30000Pa, the vacuum pressure switch 2 works, and the electromagnetic vacuum baffle valve 3 and the dry vacuum pump 9 are electrified to work; the flow rate of the gas is adjusted to be within the range required by the oxygen detector 6 through the flow valve 7, and the oxygen detector 6 can detect the oxygen content in the plasma welding box; the vacuum filter 4 and the secondary filter 8 are used for filtering smoke and dust stains generated in the welding process; the one-way valve 5 prevents gas from flowing back into the plasma welding chamber, and protects the oxygen content in the plasma welding chamber from being damaged.
The three components of the electromagnetic vacuum flapper valve 3, the oxygen detector 6 and the dry vacuum pump 9 share one power switch 10 for power supply, and if any one of the three components has faults such as short circuit and the like in the measuring process, the upstream power switch 10 can be tripped due to overcurrent, so that the dry vacuum pump 9, the oxygen detector 6 and the electromagnetic vacuum flapper valve 3 are powered off and stop working; the vacuum filter 4, the one-way valve 5, the secondary filter 8 and the flow valve 7 belong to mechanical parts, and do not need power supply.
In the device, a vacuum ball valve 1, a vacuum pressure switch 2, an electromagnetic vacuum baffle valve 3, a vacuum filter 4, a one-way valve 5, a dry vacuum pump 9, a secondary filter 8, a flow valve 7 and an oxygen detector 6 are commercially available products, and the specific models and manufacturers are as follows:
| name of component | Specification and model | Manufacturer of the product |
| Vacuum ball valve 1 | KF16 | Shanghai Qigao |
| Vacuum pressure switch 2 | ZSE30A-01 | SMC |
| Electromagnetic vacuum flapper valve 3 | GDC-J16B | Chuanbei science and technology |
| Vacuum filter 4 | RF-20 | Honeywell |
| Check valve 5 | G3/4 | Stainless steel high-pressure one-way valve |
| Dry vacuum pump 9 | VP100 | Daertuo (a kind of medicine) |
| Secondary filter 8 | GLQ110 | Nanjing titanium gold |
| Flow valve 7 | Z0-201 | Integrated with oxygen detector 6 |
| Oxygen detector 6 | Z0-201 | Nanjing titanium gold |
Claims (1)
1. An automatic monitoring device for oxygen content of a plasma welding box comprises the plasma welding box and an oxygen detector, and is characterized in that a vacuum ball valve is arranged on a corresponding interface of the plasma welding box, the other interface of the vacuum ball valve is sequentially connected with a vacuum pressure switch, an electromagnetic vacuum baffle valve, a vacuum filter and a one-way valve through a plurality of sections of vacuum tubes, the air outlet end of the one-way valve is connected with an air inlet of a dry vacuum pump, and the air outlet of the dry vacuum pump is sequentially connected with a secondary filter, a flow valve and the oxygen detector through the vacuum tubes and a connector; in the electrical connection relation, the oxygen detector and the vacuum pressure switch are connected in parallel at the output end of the power switch, and the electromagnetic vacuum baffle valve and the dry vacuum pump are connected in parallel at the normally open contact of the vacuum pressure switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020291762.2U CN211889398U (en) | 2020-03-11 | 2020-03-11 | Automatic monitoring device for oxygen content of plasma welding box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020291762.2U CN211889398U (en) | 2020-03-11 | 2020-03-11 | Automatic monitoring device for oxygen content of plasma welding box |
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| Publication Number | Publication Date |
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| CN211889398U true CN211889398U (en) | 2020-11-10 |
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| CN202020291762.2U Active CN211889398U (en) | 2020-03-11 | 2020-03-11 | Automatic monitoring device for oxygen content of plasma welding box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114986130A (en) * | 2022-05-23 | 2022-09-02 | 上海电气核电设备有限公司 | Back gas protection method for butt welding of thin-walled tube and large-chamber container tube joint |
-
2020
- 2020-03-11 CN CN202020291762.2U patent/CN211889398U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114986130A (en) * | 2022-05-23 | 2022-09-02 | 上海电气核电设备有限公司 | Back gas protection method for butt welding of thin-walled tube and large-chamber container tube joint |
| CN114986130B (en) * | 2022-05-23 | 2024-02-02 | 上海电气核电设备有限公司 | Back gas protection method for butt welding of thin-wall pipe and large-cavity container pipe joint |
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Address after: No. 97, Qianming Road, Qingshan Community, Deshan Street, Changde Economic and Technological Development Zone, Changde City, Hunan Province, 415001 Patentee after: Hunan Xiangtou Jintian Titanium Technology Co., Ltd. Address before: 415000 97 Qianming Road, Deshan Town, Changde economic and Technological Development Zone, Changde City, Hunan Province Patentee before: HUNAN GOLDSKY TITANIUM INDUSTRY TECHNOLOGY Co.,Ltd. |