CN204255636U - Vacuum pressure testing equipment - Google Patents
Vacuum pressure testing equipment Download PDFInfo
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- CN204255636U CN204255636U CN201420790022.8U CN201420790022U CN204255636U CN 204255636 U CN204255636 U CN 204255636U CN 201420790022 U CN201420790022 U CN 201420790022U CN 204255636 U CN204255636 U CN 204255636U
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- isolation valve
- interface
- testing equipment
- gas source
- valve
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Abstract
The utility model discloses a kind of vacuum pressure testing equipment.This vacuum pressure testing equipment comprises carrier, also comprise be arranged on carrier for connect external testing equipment equipment interface, be arranged on carrier for connect noble gas source the first gas source interface, be arranged on carrier for connect vaccum-pumping equipment the second gas source interface, be connected to the first isolation valve between equipment interface and the first gas source interface, be connected to the second isolation valve between equipment interface and the second gas source interface.Vacuum pressure testing equipment impermeability provided by the utility model is good, and is conducive to saving the time of removing the pipeline be connected with external testing equipment when pressure test switches with vacuum test, reduces experiment work amount.
Description
Technical field
The utility model relates to electrical test equipment field, particularly relates to a kind of vacuum pressure testing equipment.
Background technology
In electrical test, especially in generator stator bar pressure test process, need to be filled with 0.3-0.5MPa inert gas to generator, while pressure test, prevent air from entering line rod cause oxidation corrosion.After pressure test terminates, need before vaccum-pumping equipment being connected to generator stator bar to remove the pipeline to generator pressure test, connect vaccum-pumping equipment and carry out vacuum test.After vacuum test terminates, again inert gas need be filled with generator stator bar, keep pressure-fired, prevent air from entering, simultaneously periodic monitoring force value.Tonifying Qi can be carried out when force value is on the low side.
Carrying out pressure test in vacuum test process, the connection of inertia source of the gas and vaccum-pumping equipment need be switched, switch vacuum pipeline, pressure line to be connected with generator stator bar, demolishing process workload greatly, and easily causes air to enter generator stator bar causing oxidation corrosion.In addition, when generator enters the maintenance stage, noble gas source need carry out stoppage in transit maintenance, inert gas gas cylinder need be used to substitute on-the-spot source of the gas and to provide inert gas to generator, now need to carry out gas source interface switching, inconvenient operation, and easily cause air to carry out generator.
Utility model content
The technical problems to be solved in the utility model is, for the defect of prior art, provides a kind of vacuum pressure testing equipment.
The utility model solves the technical scheme that its technical matters adopts: vacuum pressure testing equipment, comprises carrier, also comprises the equipment interface be separately positioned on described carrier, the first gas source interface and the second gas source interface; One end of described equipment interface for connecting external testing equipment, one end of the first gas source interface for connect noble gas source, the second gas source interface one end for connecting vaccum-pumping equipment; The other end of described equipment interface is connected by the first isolation valve with the other end of described first gas source interface, and the other end of described equipment interface is connected by the second isolation valve with the other end of described second gas source interface.
Preferably, also comprise be connected to the 5th isolation valve between described first gas source interface with described first isolation valve, one end is connected to the 5th isolation valve and the 3rd isolation valve between the first isolation valve and the first external interface for being connected external master gauge of being connected with the described 3rd isolation valve other end; Also comprise be connected to the 6th isolation valve between described second gas source interface with described second isolation valve, one end is connected to described 6th isolation valve and the 4th isolation valve between the second isolation valve and the second external interface for being connected external master gauge of being connected with the described 4th isolation valve other end.
Preferably, the pointer tensimeter for detecting inert gas plenum air pressure be connected between described 5th isolation valve and described first isolation valve is also comprised; Also comprise the pressure vacuum gauge for detecting the venting air pressure in described vacuum be connected between described 6th isolation valve and described second isolation valve.
Preferably, the rapid-acting coupling that described first gas source interface comprises for connecting inert gas gas cylinder is buckled with the first fish scale for being connected the on-the-spot source of the gas of inert gas.
Preferably, the reduction valve be connected with described first fish scale button and the 7th isolation valve be connected with described reduction valve is also comprised.
Preferably, the safety valve for providing overpressure protection be connected between described 5th isolation valve and described 7th isolation valve is also comprised.
Preferably, described second gas source interface comprises the second fish scale button for connecting vaccum-pumping equipment.
Preferably, the reverse checkvalve be connected between described second fish scale button and described 6th isolation valve is also comprised.
Preferably, also comprise the bleed valve be connected between described equipment interface and described first isolation valve, described bleed valve is connected between described equipment interface and described second isolation valve.
Preferably, the filter screen for filtering gas impurity be connected between described equipment interface and described bleed valve is also comprised.
The utility model compared with prior art tool has the following advantages: vacuum pressure testing equipment provided by the utility model, be provided be connected with external testing equipment equipment interface, be connected the first gas source interface of noble gas source and connect the second gas source interface of vaccum-pumping equipment, and be connected with external testing equipment with vaccum-pumping equipment by the first isolation valve and the second isolation valve switching noble gas source, be conducive to saving the time of removing the pipeline be connected with external testing equipment when pressure test switches with vacuum test, reduce experiment work amount; And this vacuum pressure testing equipment impermeability is good, avoids causing air to carry out external testing equipment when switching pipeline, adverse effect is caused to external testing equipment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is a structural representation of vacuum pressure testing equipment in the utility model one embodiment.
Fig. 2 is another structural representation of vacuum pressure testing equipment in the utility model one embodiment.
10, carrier; 11, equipment interface; 12, the first gas source interface; 121, rapid-acting coupling; 122, the first fish scale button; 13, the second gas source interface; 131, the second fish scale button; 14, the first isolation valve; 15, the second isolation valve; 16, bleed valve; 17, the 3rd isolation valve; 18, the first external interface; 19, the 4th isolation valve; 20, the second external interface; 21, the 5th isolation valve; 22, pointer tensimeter; 23, the 6th isolation valve; 24, pressure vacuum gauge; 25, reduction valve; 26, the 7th isolation valve; 27, safety valve; 28, reverse checkvalve; 29, filter screen.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Fig. 1, Fig. 2 illustrate the vacuum pressure testing equipment in the present embodiment.As shown in Figure 1, this vacuum pressure testing equipment comprises carrier 10, is separately positioned on equipment interface 11, first gas source interface 12 on carrier 10 and the second gas source interface 13.Particularly, one end of equipment interface 11 for connecting external testing equipment, one end of the first gas source interface 12 for connect noble gas source, the second gas source interface 13 one end for connecting vaccum-pumping equipment; The other end of equipment interface 11 is connected by the first isolation valve 14 with the other end of the first gas source interface 12, and the other end of equipment interface 11 is connected by the second isolation valve 15 with the other end of the second gas source interface 13.Understandably, the first isolation valve 14 and the second isolation valve 15 are all arranged in vacuum pressure testing equipment.
Particularly, in vacuum pressure testing equipment, be provided with the branch pipe tee connection for connection device interface 11, first isolation valve 14 and the second isolation valve 15, three ports of branch pipe tee connection are connected with the second isolation valve 15 with equipment interface 11, first isolation valve 14 respectively.Be appreciated that the connection between equipment interface 11, first isolation valve 14 and the second isolation valve 15 is not limited to branch pipe tee connection, can also be connected by other web members.
In the present embodiment, this vacuum pressure testing equipment can be vacuum pressure chamber; This carrier 10 can be casing; This external testing equipment can be generator stator bar or other equipment; This noble gas source can be Nitrogen source gases; This vaccum-pumping equipment can be vacuum pump.
Understandably, the carrier 10 of this vacuum pressure testing equipment can adopt stainless steel welded forming, and the Qianmen of carrier 10 and back door all can foldings, so that maintenance.Configure two bottom carrier 10 and support lower margin and two universal wheels, mobile and mobile rear fixing to facilitate.
When carrying out vacuum pressure test, external testing equipment is connected to the equipment interface 11 of vacuum pressure testing equipment, noble gas source and vaccum-pumping equipment are connected to respectively the first gas source interface 12 and the second gas source interface 13, by controlling the opening and closing of the first isolation valve 14 and the second isolation valve 15, to realize quick switching when providing inert gas to external testing equipment and carry out vacuum pumping, be conducive to saving the time that pressure test need remove the pipeline that to be connected with external testing equipment when switching with vacuum test, minimizing experiment work amount; And this vacuum pressure testing equipment impermeability is good, avoid causing air to carry out external testing equipment when switching pipeline, without the need to carrying out pipeline dismounting work, workload is little; And can wiredly avoid in pipeline demolishing process, air enters external testing equipment, causes adverse effect to external testing equipment.
As shown in Figure 2, this vacuum pressure testing equipment also comprises and is connected to bleed valve 16 between equipment interface 11 and the first isolation valve 14 and the filter screen 29 for filtering gas impurity of equipment between equipment interface 11 and bleed valve 16.Understandably, bleed valve 16 is connected between equipment interface 11 and the second isolation valve 15, and in order to avoid in vacuum test process, the inert gas be present in pipeline causes interference to vacuum test.
As shown in Figure 2, this vacuum pressure testing equipment also comprise be connected to the 5th isolation valve 21 between the first gas source interface 12 with the first isolation valve 14, the first external interface 18 for being connected external master gauge that one end is connected to the 3rd isolation valve 17 between the 5th isolation valve 21 with the first isolation valve 14 and is connected with the 3rd isolation valve 17 other end.Before carrying out pressure test, first close the first isolation valve 14 and the 5th isolation valve 21, open the 3rd isolation valve 17 and make its external master gauge work, whether the reading observing its external master gauge within a period of time declines, if decline, then there is the place of Leakage Gas; If do not decline, then open the first isolation valve 14 and the 5th isolation valve 21 carries out pressure test, record external testing equipment pressure.Understandably, if only close the first isolation valve 14 and do not close the 5th isolation valve 21, gas may be caused to be leaked by the first gas source interface 12 or safety valve 27.If only close the 5th isolation valve 21 and do not close the first isolation valve 14, gas may be caused to leak from equipment interface 11, cause the counting of external master gauge to decline.。
As shown in Figure 2, this vacuum pressure testing equipment also comprises the pointer tensimeter 22 for detecting inert gas plenum air pressure be connected between the 5th isolation valve 21 and the first isolation valve 14.Understandably, when adopting noble gas source to provide inert gas to external testing equipment, open the first isolation valve 14 and the second isolation valve 15, to make pointer tensimeter 22 can fast recording inner gas pressure simultaneously.Pointer tensimeter 22 can also be applied in the maintenance stage, need fill the inert gas of about 0.05MPa to generator stator bar with, now needs to adopt pointer tensimeter 22 periodical inspection to guarantee that its pressure is not less than 0.02MPa.Particularly, the first isolation valve 14 and the 5th isolation valve 21 are needle-valve, its good airproof performance, can be used for long-term maintenance or pressure test.
As shown in Figure 2, the rapid-acting coupling 121 that first gas source interface 12 comprises for connecting inert gas gas cylinder buckles 122 with the first fish scale for being connected the on-the-spot source of the gas of inert gas, when entering the maintenance stage to make external testing equipment, the on-the-spot source of the gas of inert gas need carry out in maintenance process, inert gas gas cylinder can be directly used to be filled with inert gas directly to external testing equipment, without the need to carrying out gas source interface switching separately, simple to operation, and can effectively avoid air to carry out external testing equipment and then affect causing harmful effect to external testing equipment.
Understandably, because inert gas gas cylinder is provided with reduction valve, therefore this vacuum pressure testing equipment can adopt rapid-acting coupling 121 to connect inert gas gas cylinder.The on-the-spot source of the gas of inert gas is not provided with reduction valve, therefore in vacuum pressure testing equipment, is provided with the reduction valve 25 be connected with the first fish scale button 122 and the 7th isolation valve 26 be connected with reduction valve 25.Understandably, when adopting inert gas gas inflated, the 7th isolation valve 26 need be closed, to avoid inert gas to flow to reduction valve 25, cause the counting of pointer tensimeter 22 to occur deviation.
As shown in Figure 2; this vacuum pressure testing equipment also comprises the safety valve 27 for providing overpressure protection be connected between described 5th isolation valve 21 and the 7th isolation valve 26; adopting the on-the-spot source of the gas of inert gas to open venting to the pressure of external testing equipment inflation more than during 3.3bar, avoid damaging external testing equipment.Safety valve 27 is connected between described 5th isolation valve 21 and the 7th isolation valve 26, for ensureing that inflatable safety does not affect again the impermeability of vacuum pressure testing equipment.
As shown in Figure 2, this vacuum pressure testing equipment also comprise be connected to the 6th isolation valve 23 between the second gas source interface 13 with the second isolation valve 15, the second external interface 20 for being connected external master gauge that one end is connected to the 4th isolation valve 19 between the 6th isolation valve 23 with the second isolation valve 15 and is connected with the 4th isolation valve 19 other end.Between vacuum test process, first close the second isolation valve 15 and the 6th isolation valve 23, open the 4th isolation valve 19 and make its external master gauge work, whether the counting observing external master gauge within a period of time rises, if rise, then there is the place of Leakage Gas; If do not rise, then open the second isolation valve 15 and the 6th isolation valve 23 to carry out vacuum test.Understandably, if only close the second isolation valve 15 and do not close the 6th isolation valve 23, if pressure increase, then Leakage Gas position is between the second gas source interface 13 and the second isolation valve 15, determines whether other positions exist Leakage Gas simultaneously.
As shown in Figure 2, this vacuum pressure testing equipment also comprises the pressure vacuum gauge 24 for detecting the venting air pressure in vacuum be connected between the 6th isolation valve 23 and the second isolation valve 15.Understandably, carrying out in vacuum test process, opening the second isolation valve 15 and the 6th isolation valve 23 simultaneously, pressure vacuum gauge 24 fast recording is bled air pressure.Particularly, the second isolation valve 15 and the 6th isolation valve 23 are needle-valve, its good airproof performance, can be used for long-term maintenance or pressure test.
As shown in Figure 2, the second gas source interface 13 comprises the second fish scale button 131 for connecting vaccum-pumping equipment.This vacuum pressure testing equipment also comprises the reverse checkvalve 28 be connected between the second fish scale button 131 and the 6th isolation valve 23, after quitting work for preventing vaccum-pumping equipment, during the vacuum of the vacuum in external testing equipment lower than vaccum-pumping equipment, by in the oily back suction in vaccum-pumping equipment to external testing equipment, adverse effect is caused to external testing equipment.
The utility model is described by a specific embodiment, it will be appreciated by those skilled in the art that, when not departing from the utility model scope, can also carry out various conversion and be equal to substituting to the utility model.In addition, for particular condition or concrete condition, various amendment can be made to the utility model, and not depart from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole embodiments fallen in the utility model right.
Claims (10)
1. a vacuum pressure testing equipment, comprises carrier (10), it is characterized in that: also comprise the equipment interface (11) be separately positioned on described carrier (10), the first gas source interface (12) and the second gas source interface (13); One end of described equipment interface (11) for connecting external testing equipment, one end of the first gas source interface (12) for connect noble gas source, the second gas source interface (13) one end for connecting vaccum-pumping equipment; The other end of described equipment interface (11) is connected by the first isolation valve (14) with the other end of described first gas source interface (12), and the other end of described equipment interface (11) is connected by the second isolation valve (15) with the other end of described second gas source interface (13).
2. vacuum pressure testing equipment according to claim 1, is characterized in that: also comprise be connected to the 5th isolation valve (21) between described first gas source interface (12) with described first isolation valve (14), one end is connected to described 5th isolation valve (21) and the 3rd isolation valve (17) between described first isolation valve (14) and the first external interface (18) for being connected external master gauge that is connected with described 3rd isolation valve (17) other end; Also comprise be connected to the 6th isolation valve (23) between described second gas source interface (13) with described second isolation valve (15), one end is connected to described 6th isolation valve (23) and the 4th isolation valve (19) between described second isolation valve (15) and the second external interface (20) for being connected external master gauge that is connected with described 4th isolation valve (19) other end.
3. vacuum pressure testing equipment according to claim 2, is characterized in that: also comprise the pointer tensimeter (22) for detecting inert gas plenum air pressure be connected between described 5th isolation valve (21) and described first isolation valve (14); Also comprise the pressure vacuum gauge (24) for detecting the venting air pressure in described vacuum be connected between described 6th isolation valve (23) and described second isolation valve (15).
4. vacuum pressure testing equipment according to claim 3, is characterized in that: the rapid-acting coupling (121) that described first gas source interface (12) comprises for connecting inert gas gas cylinder is buckled (122) with the first fish scale for being connected the on-the-spot source of the gas of inert gas.
5. vacuum pressure testing equipment according to claim 4, is characterized in that: also comprise the reduction valve (25) be connected with described first fish scale button (122) and the 7th isolation valve (26) be connected with described reduction valve (25).
6. vacuum pressure testing equipment according to claim 5, is characterized in that: also comprise the safety valve (27) for providing overpressure protection be connected between described 5th isolation valve (21) and described 7th isolation valve (26).
7. vacuum pressure testing equipment according to claim 2, is characterized in that: described second gas source interface (13) comprises the second fish scale button (131) for connecting vaccum-pumping equipment.
8. vacuum pressure testing equipment according to claim 7, is characterized in that: also comprise the reverse checkvalve (28) be connected between described second fish scale button and described 6th isolation valve (23).
9. the vacuum pressure testing equipment according to any one of claim 1 ~ 8, it is characterized in that: also comprise the bleed valve (16) be connected between described equipment interface (11) and described first isolation valve (14), described bleed valve (16) is connected between described equipment interface (11) and described second isolation valve (15).
10. vacuum pressure testing equipment according to claim 9, is characterized in that: also comprise the filter screen for filtering gas impurity (29) be connected between described equipment interface (11) and described bleed valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420790022.8U CN204255636U (en) | 2014-12-12 | 2014-12-12 | Vacuum pressure testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420790022.8U CN204255636U (en) | 2014-12-12 | 2014-12-12 | Vacuum pressure testing equipment |
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| Publication Number | Publication Date |
|---|---|
| CN204255636U true CN204255636U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420790022.8U Active CN204255636U (en) | 2014-12-12 | 2014-12-12 | Vacuum pressure testing equipment |
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| CN (1) | CN204255636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113736982A (en) * | 2020-05-27 | 2021-12-03 | 中国科学院上海应用物理研究所 | Gas protection device for post-welding online heat treatment and use method thereof |
-
2014
- 2014-12-12 CN CN201420790022.8U patent/CN204255636U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113736982A (en) * | 2020-05-27 | 2021-12-03 | 中国科学院上海应用物理研究所 | Gas protection device for post-welding online heat treatment and use method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |