CN113916462A - Explosion-proof vacuum detection cover for helium mass spectrometer leak detector - Google Patents
Explosion-proof vacuum detection cover for helium mass spectrometer leak detector Download PDFInfo
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- CN113916462A CN113916462A CN202111184948.3A CN202111184948A CN113916462A CN 113916462 A CN113916462 A CN 113916462A CN 202111184948 A CN202111184948 A CN 202111184948A CN 113916462 A CN113916462 A CN 113916462A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
- G01M3/205—Accessories or associated equipment; Pump constructions
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Abstract
The invention discloses an explosion-proof vacuum detection cover for a helium mass spectrometer leak detector, and relates to the technical field of helium mass spectrometer leak detector equipment. This an explosion-proof type vacuum test cover for helium mass spectrometer leak detector, including casing and last casing down, there is last casing top through hinge movable mounting down, sealing mechanism is installed to casing one side down, sealing mechanism comprises fixing base, lead screw, clamp plate and locking hand wheel, casing one side surface welding has a fixing base down No. one the fixing base surface is rotated and is installed the lead screw, lead screw surface threaded connection has the locking hand wheel, it has the clamp plate to go up casing one side welding, the clamp plate is used for the spacing of last casing. The invention solves the problems that helium gas needs to be injected into the inner cavity of the existing vacuum detection cover in the using process, and when the pressure in the vacuum detection cover is increased, the gap at the joint of the lower shell and the upper shell is increased, so that the sealing effect of the vacuum detection cover is poor, and the using effect of the vacuum detection cover is greatly reduced.
Description
Technical Field
The invention relates to the technical field of helium mass spectrometer leak detector equipment, in particular to an explosion-proof vacuum detection cover for a helium mass spectrometer leak detector.
Background
Helium Mass spectrometer leak detector (Helium Mass spectrometer leak detector) is a gas industry term, and a Mass spectrometer for leak detection is used for detecting Helium by using a gas analyzer and using Helium or hydrogen as leak detection gas. The helium has low background noise and small molecular weight and viscosity coefficient, so the helium is easy to pass through the leak hole and diffuse; in addition, since helium is an inert gas and does not corrode equipment, helium is often used as a leak gas. The gas is sprayed to a detected container connected with a gas analyzer (adjusted to a working state only reacting to helium gas), if the container has a leak hole, the analyzer reacts, and the position of the leak hole and the size of the leak gas can be known.
Helium is injected into the inner cavity of the existing vacuum detection cover in the using process, and after the pressure in the vacuum cover is increased, the gap at the joint of the lower shell and the upper shell is increased, so that the sealing effect of the vacuum cover is poor, and the using effect of the vacuum detection cover is greatly reduced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an explosion-proof vacuum detection cover for a helium mass spectrometer leak detector, which solves the problems that the sealing effect of the vacuum cover is poor and the using effect of the vacuum detection cover is greatly reduced because helium gas needs to be injected into an inner cavity of the vacuum detection cover in the using process of the existing vacuum detection cover, and a gap at the joint of a lower shell and an upper shell is increased after the pressure in the vacuum cover is increased.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an explosion-proof vacuum detection cover for a helium mass spectrometer leak detector comprises a lower shell and an upper shell, wherein the upper shell is movably arranged above the lower shell through a hinge, and a sealing mechanism is arranged on one side of the lower shell;
sealing mechanism comprises fixing base, lead screw, clamp plate and locking hand wheel, the welding of casing one side surface has the fixing base No. one the fixing base surface is rotated and is installed the lead screw, lead screw surface threaded connection has the locking hand wheel, the welding of last casing one side has the clamp plate, the clamp plate is used for the spacing of last casing, the last casing lower surface is equipped with air-tight bag.
Further, a pivot is installed in the fixing base surface rotation, a pivot and the fixed linking to each other in lead screw bottom, a pivot is used for the rotation of lead screw, the upper surface of casing is equipped with spacing arch down, the spacing groove has been seted up to the upper shell lower surface, spacing groove and spacing protruding peg graft each other and are used for promoting the leakproofness between casing and the last casing down.
Furthermore, the air-tight bag is located the spacing inslot, go up casing one end surface and seted up a recess, a recess inner chamber is equipped with the charging connector, the charging connector is used for inflating of air-tight bag and deflates.
Further, go up casing upper surface movable mounting and have protection machanism, protection machanism comprises No. two fixing bases, No. two pivots, skeleton, pressure seat and supports, the welding of casing opposite side surface has No. two fixing bases down, No. two fixing base surface rotation installs No. two pivots, No. two pivot skin weld has the skeleton, the welding of skeleton both sides has the support, support and skeleton are mutually supported and are used for the protection of last casing, the welding of the skeleton other end has the pressure seat.
Further, go up casing inner chamber bottom and be equipped with the support column No. one, a support column is provided with the multiunit altogether, a support column bottom all is connected with the backup pad No. one, a backup pad is used for the support of check out test set, lower casing inner chamber is equipped with the support column No. two, No. two the support column is provided with the multiunit altogether, No. two backup pads of support column top fixedly connected with, No. two the backup pad is used for check out test set's support.
Further, a support spring is arranged in each of the first support column and the second support column, a telescopic column is connected to the top of each support spring, the telescopic columns are used for supporting a first support plate and a second support plate, and the support springs are used for resetting the telescopic columns.
Furthermore, No. two grooves are formed in one end of the upper surface of the upper shell, a pressure gauge is installed in an inner cavity of the No. two grooves and used for installing the pressure gauge, and the pressure gauge is used for detecting the pressure in the inner cavity of the shell.
Further, lower casing one end is equipped with the air feed and connects, the air feed connects and is used for being connected with check out test set.
Further, the casing other end is equipped with the check valve down, check valve one end is connected with the flexible pipe of screw thread, the flexible pipe of screw thread one end fixedly connected with exhaust joint, the flexible pipe of screw thread and exhaust joint all are located casing inner chamber down, the exhaust joint is used for with wait to examine equipment and be connected.
Three beneficial effects
The invention has the following beneficial effects:
1. this an explosion-proof type vacuum test cover for helium mass spectrometer leak detector, through the pivot, the lead screw, the clamp plate, locking hand wheel, spacing arch, the spacing groove, a recess, charging connector and sealed gasbag, mutually support and close the last casing between, spacing arch and spacing groove interlock each other and are in the same place, rotate the lead screw through a pivot simultaneously, can make lead screw one end remove to the clamp plate inner chamber, rotatory locking hand wheel accessible clamp plate compresses tightly the last casing, link to each other the charging connector in trachea and a recess simultaneously, can aerify to sealed gasbag inner chamber through the charging connector, sealed gasbag aerifys the back inflation, thereby accessible sealed gasbag fills spacing arch and spacing groove junction, the leakproofness of connecting between casing and the lower casing under can further promotion.
2. This an explosion-proof type vacuum test cover for helium mass spectrometer leak detector, through the support column No. one, a backup pad, No. two support columns, No. two backup pads, mutually support between supporting spring and the flexible post, can treat the check out test set through No. two backup pads and support, accessible a backup pad and No. two backup pads compress the supporting spring of a support column and No. two support column inner chambers when closing last casing, make flexible post pressed into in a backup pad and No. two backup pads, thereby realize waiting to examine spacing of check out test set, will avoid waiting to examine test set when treating that it leaks gas and detects and take place to rock in the vacuum test cover, promote the leakproofness of waiting to examine test set and exhaust joint junction.
3. The anti-explosion vacuum detection cover for the helium mass spectrometer leak detector is characterized in that the anti-explosion vacuum detection cover is connected with a helium tank through a gas supply connector, a check valve, a threaded expansion pipe and the gas supply connector which are matched with each other, helium can be injected into the vacuum detection cover through a pipeline, the check valve is connected with the helium mass spectrometer leak detector through a pipeline, then an exhaust connector is connected with equipment to be detected, the exhaust connector is connected with the check valve through the threaded expansion pipe, the threaded expansion pipe can be stretched randomly during use, the exhaust connector is conveniently and quickly connected with the equipment to be detected in different models, the check valve is a one-way valve, when the helium enters an inner cavity of the equipment to be detected through a dew point, when the helium mass spectrometer leak detector is disassembled and then detects the equipment to be detected in other vacuum detection covers, one end of a thread of the expansion pipe can be blocked through the check valve, and the helium in the equipment to be detected is prevented from losing during detection, the detection efficiency of the equipment to be detected is improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic overall sectional structure of the present invention;
FIG. 3 is a schematic view of the construction of the lower housing of the present invention;
FIG. 4 is a schematic structural diagram of the upper housing of the present invention;
FIG. 5 is a schematic view of the guard mechanism of the present invention;
FIG. 6 is a schematic structural view of the present invention;
FIG. 7 is a schematic cross-sectional view of the cleaning mechanism of the present invention;
fig. 8 is a schematic view of the structure of the guide post of the present invention.
In the figure, 1, a lower shell; 101. an upper housing; 2. a sealing mechanism; 201. a first fixed seat; 202. a first rotating shaft; 203. a screw rod; 204. pressing a plate; 205. locking a hand wheel; 206. a limiting bulge; 207. a limiting groove; 208. a first groove; 209. an air charging nozzle; 210. sealing the air bag; 3. a protection mechanism; 301. a second fixed seat; 302. a second rotating shaft; 303. a framework; 304. pressing a base; 305. a support; 4. a first support column; 401. a first support plate; 402. a second support column; 403. a second support plate; 404. a support spring; 405. a telescopic column; 5. a second groove; 501. a pressure gauge; 502. a gas supply joint; 503. a non-return valve; 504. a threaded telescopic pipe; 505. an exhaust joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1 to 8, an embodiment of the present invention provides a technical solution: an explosion-proof vacuum detection cover for a helium mass spectrometer leak detector comprises a lower shell 1 and an upper shell 101, wherein the upper shell 101 is movably arranged above the lower shell 1 through a hinge, and a sealing mechanism 2 is arranged on one side of the lower shell 1;
the sealing mechanism 2 comprises a first fixing seat 201, a screw rod 203, a pressing plate 204 and a locking hand wheel 205, wherein the first fixing seat 201 is welded on the surface of one side of the lower shell 1, the screw rod 203 is installed on the surface of the first fixing seat 201 in a rotating mode, the locking hand wheel 205 is connected to the surface of the screw rod 203 in a threaded mode, the pressing plate 204 is welded on one side of the upper shell 101, the pressing plate 204 is used for limiting the upper shell 101, a sealing air bag 210 is arranged on the lower surface of the upper shell 101, the screw rod 203 is rotated through a rotating shaft 202, one end of the screw rod 203 can be moved to the inner cavity of the pressing plate 204, the upper shell 101 can be tightly pressed through the pressing plate 204 by the rotating locking hand wheel 205, an air pipe is connected with an inflating nozzle 209 in a first groove 208, the inner cavity of the sealing air bag 210 can be inflated through the inflating nozzle 209, the sealing air bag 210 is inflated and then expands, and the joint of the limiting bulge 206 and the limiting groove 207 can be filled through the sealing air bag 210, the sealability of the connection between the upper case 101 and the lower case 1 can be further improved.
Specifically, a pivot 202 is installed in the fixing base 201 surface rotation, a pivot 202 is connected with lead screw 203 bottom is fixed, a pivot 202 is used for the rotation of lead screw 203, the upper surface of casing 1 is equipped with spacing arch 206 down, spacing groove 207 has been seted up to last casing 101 lower surface, spacing groove 207 is pegged graft each other with spacing arch 206 and is used for promoting the leakproofness between casing 1 and the last casing 101 down.
In this embodiment, the limiting groove 207 and the limiting protrusion 206 are inserted into each other to improve the sealing property between the lower casing 1 and the upper casing 101.
Specifically, the sealing airbag 210 is located in the limiting groove 207, a first groove 208 is formed in the surface of one end of the upper casing 101, an inflating nozzle 209 is arranged in the inner cavity of the first groove 208, and the inflating nozzle 209 is used for inflating and deflating the sealing airbag 210.
In this embodiment, connect the trachea with the charging connector 209 in the recess 208 No. one, can aerify to sealed gasbag 210 inner chamber through charging connector 209, sealed gasbag 210 inflates the back inflation to accessible sealed gasbag 210 fills spacing arch 206 and spacing groove 207 junction, can further promote the leakproofness of connecting between upper casing 101 and the lower casing 1.
Specifically, go up surface activity and install protection machanism 3 on casing 101, protection machanism 3 comprises No. two fixing bases 301, No. two pivot 302, skeleton 303, pressure seat 304 and support 305, 1 opposite side of casing side welding has No. two fixing bases 301 down, No. two fixing bases 301 rotate on surface and install No. two pivot 302, No. two pivot 302 skin weld has skeleton 303, skeleton 303 both sides welding has support 305, support 305 and skeleton 303 mutually support and are used for the protection of last casing 101, the welding of the skeleton 303 other end has pressure seat 304.
In this embodiment, when the pressure of vacuum detection cover inner chamber is great, the accessible is No. two pivot 302 rotated skeleton 303, support 305 has all been welded to skeleton 303 both sides, can push down on last casing 101 surface through skeleton 303 and support 305 mutually supporting, the skeleton 303 other end links to each other with lead screw 203 through pressing seat 304 simultaneously, can compress tightly seat 304 through rotatory locking hand wheel 205, can promote the protecting effect to last casing 101, avoid the too big deformation that causes last casing 101 of pressure in the vacuum detection cover.
Specifically, go up casing 101 inner chamber bottom and be equipped with support column 4 No. one, support column 4 is provided with the multiunit altogether, support column 4 bottom all is connected with a backup pad 401 No. one, a backup pad 401 is used for the support of check out test set, casing 1 inner chamber is equipped with support column 402 No. two down, support column 402 is provided with the multiunit altogether No. two, No. two backup pads 403 of support column 402 top fixedly connected with, No. two backup pads 403 are used for the support of check out test set.
In this embodiment, can treat check out test set through No. two backup pads 403 and support, accessible backup pad 401 and No. two backup pads 403 compress the supporting spring 404 of a support column 4 and No. two support column 402 inner chambers when closing last casing 101, make flexible post 405 pressed into in backup pad 401 and No. two backup pads 403, thereby realize waiting checking the spacing of check out test set, will avoid waiting to check out test set when treating that the gas leakage detects and take place to rock in the vacuum detection cover, promote the leakproofness of waiting to check out test set and exhaust joint 505 junction.
Specifically, support spring 404 is all equipped with in support column 4 and No. two support column 402 inner chambers, support spring 404 top all is connected with flexible post 405, flexible post 405 is used for the support to a backup pad 401 and No. two backup pads 403, support spring 404 is used for the restoration of flexible post 405.
In this embodiment, the telescopic column 405 is supported by the support spring 404, and the telescopic column 405 can be quickly reset after the extrusion force applied to the first support plate 401 and the second support plate 403 is removed.
Specifically, No. two recess 5 have been seted up to upper housing 101 upper surface one end, manometer 501 is installed to No. two recess 5 inner chambers, No. two recess 5 are used for manometer 501's installation, manometer 501 is used for the pressure detection of casing inner chamber.
In this embodiment, No. two recess 5 have been seted up on upper housing 101 surface, and manometer 501 is installed to No. two recess 5 inner chambers, can carry out real-time monitoring to the pressure value of vacuum detection cover inner chamber through manometer 501, and after the leakproofness that the vacuum detected the cover reduces, manometer 501's pointer changes, and the operator can in time carry out the vacuum detection cover and adjust.
Specifically, one end of the lower housing 1 is provided with an air supply connector 502, and the air supply connector 502 is used for connecting with a detection device.
In this embodiment, the gas supply connector 502 can be quickly connected to the device to be tested.
Specifically, the other end of the lower housing 1 is provided with a check valve 503, one end of the check valve 503 is connected with a threaded telescopic pipe 504, one end of the threaded telescopic pipe 504 is fixedly connected with an exhaust joint 505, the threaded telescopic pipe 504 and the exhaust joint 505 are both located in the inner cavity of the lower housing 1, and the exhaust joint 505 is used for being connected with equipment to be tested.
In this embodiment, the gas supply connector 502 is connected to a helium tank through a pipeline, helium gas can be injected into the vacuum detection cover, the check valve 503 is connected to a helium mass spectrometer leak detector through a pipeline, then the gas exhaust connector 505 is connected to the equipment to be detected, wherein the air exhaust joint 505 is connected with the non-return valve 503 through a threaded telescopic pipe 504, the threaded telescopic pipe 504 can be stretched randomly for a long time in use, thereby facilitating the quick connection of the exhaust joint 505 with different types of equipment to be tested, the non-return valve 503 is a one-way valve, when helium enters the inner cavity of the equipment to be detected through a dew point and the helium mass spectrometer leak detector is disassembled to detect the equipment to be detected in other vacuum detection covers, one end of the threaded telescopic pipe 504 can be blocked through the check valve 503, prevent to examine the helium loss in the equipment of examining when detecting, promote the detection efficiency to examining the equipment of examining.
When the helium mass spectrometer leak detector works, the gas supply connector 502 is connected with a helium tank through a pipeline, helium can be injected into a vacuum detection cover, the check valve 503 is connected with the helium mass spectrometer leak detector through a pipeline, then the gas exhaust connector 505 is connected with equipment to be detected, wherein the gas exhaust connector 505 is connected with the check valve 503 through the threaded expansion pipe 504, the threaded expansion pipe 504 can be stretched randomly during use, so that the gas exhaust connector 505 can be conveniently and quickly connected with the equipment to be detected of different models, the check valve 503 is a one-way valve, when the helium enters the inner cavity of the equipment to be detected through a dew point, when the helium mass spectrometer leak detector is disassembled and then detects the equipment to be detected in other vacuum detection covers, one end of the threaded expansion pipe 504 can be blocked through the check valve 503, the helium in the expansion pipe to be detected is prevented from losing during detection, the detection efficiency of the equipment to be detected is improved, the first support column 4 and the second support column 402 are respectively installed in the inner cavity of the lower shell 1 and the upper shell 101, a first supporting plate 401 and a second supporting plate 403 are respectively installed at the bottom of a first supporting column 4 and the top of a second supporting column 402, equipment to be detected is placed in an inner cavity of a lower shell 1, the equipment to be detected can be supported through the second supporting plate 403, a supporting spring 404 in the inner cavity of the first supporting column 4 and the inner cavity of the second supporting column 402 can be compressed through the first supporting plate 401 and the second supporting plate 403 when an upper shell 101 is closed, a telescopic column 405 is pressed into the first supporting plate 401 and the second supporting plate 403, so that the equipment to be detected is limited, the equipment to be detected is prevented from shaking in a vacuum detection cover when the equipment to be detected is subjected to gas leakage detection, the sealing performance of the joint of the equipment to be detected and an exhaust joint 505 is improved, the upper shell 101 is closed, a limiting bulge 206 and a limiting groove 207 are mutually meshed together, and a screw rod 203 is rotated through a first rotating shaft 202, one end of a screw rod 203 can be moved to the inner cavity of a pressing plate 204, a locking hand wheel 205 can be rotated to tightly press the upper shell 101 through the pressing plate 204, an air pipe is connected with an inflating nozzle 209 in a first groove 208, the inner cavity of a sealing air bag 210 can be inflated through the inflating nozzle 209, the sealing air bag 210 is inflated and then expands, so that the joint of a limiting bulge 206 and a limiting groove 207 can be filled through the sealing air bag 210, the sealing performance of the connection between the upper shell 101 and the lower shell 1 can be further improved, a second groove 5 is formed in the surface of the upper shell 101, a pressure gauge 501 is arranged in the inner cavity of the second groove 5, the pressure value of the inner cavity of the vacuum detection cover can be monitored in real time through the pressure gauge 501, when the sealing performance of the vacuum detection cover is reduced, the pointer of the pressure gauge 501 changes, an operator can timely adjust the vacuum detection cover, when the pressure of the inner cavity of the vacuum detection cover is higher, the accessible is No. two pivot 302 rotated skeleton 303, and support 305 has all been welded to skeleton 303 both sides, can push down on last casing 101 surface through skeleton 303 and support 305 mutually supporting, and the skeleton 303 other end links to each other with lead screw 203 through pressing seat 304 simultaneously, can compress tightly pressing seat 304 through rotatory locking hand wheel 205, can promote the protecting effect to last casing 101, avoids the too big deformation that causes casing 101 of pressure in the vacuum test cover.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. The utility model provides an explosion-proof type vacuum test cover for helium mass spectrometer leak detector, includes casing (1) and last casing (101) down, there is last casing (101), its characterized in that below casing (1) top through hinge movable mounting: a sealing mechanism (2) is arranged on one side of the lower shell (1);
sealing mechanism (2) comprises fixing base (201), lead screw (203), clamp plate (204) and locking hand wheel (205) No. one, casing (1) one side surface welding has fixing base (201) No. one fixing base (201) surface rotation installs lead screw (203) No. one, lead screw (203) surface threaded connection has locking hand wheel (205), it has clamp plate (204) to go up casing (101) one side welding, clamp plate (204) are used for the spacing of last casing (101), it is equipped with air bag (210) to go up casing (101) lower surface.
2. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as claimed in claim 1, wherein: a fixing base (201) surface rotation installs pivot (202) No. one, pivot (202) link to each other with lead screw (203) bottom is fixed, pivot (202) are used for the rotation of lead screw (203), the upper surface of casing (1) is equipped with spacing arch (206) down, spacing groove (207) have been seted up to last casing (101) lower surface, spacing groove (207) are pegged graft each other with spacing arch (206) and are used for promoting the leakproofness between casing (1) and last casing (101) down.
3. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as claimed in claim 2, wherein: sealed gasbag (210) are located spacing groove (207), go up casing (101) one end surface and seted up a recess (208), a recess (208) inner chamber is equipped with charging connector (209), charging connector (209) are used for inflating and deflating of sealed gasbag (210).
4. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as claimed in claim 1, wherein: go up surface activity and install protection machanism (3) on casing (101), protection machanism (3) comprises No. two fixing bases (301), No. two pivot (302), skeleton (303), pressure seat (304) and support (305), casing (1) opposite side surface welding has No. two fixing bases (301) down, No. two fixing bases (301) surface rotation installs No. two pivot (302), No. two pivot (302) surface welding has skeleton (303), skeleton (303) both sides welding has support (305), support (305) and skeleton (303) mutually support and are used for the protection of last casing (101), skeleton (303) other end welding has pressure seat (304).
5. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as claimed in claim 1, wherein: go up casing (101) inner chamber bottom and be equipped with support column (4) No. one, support column (4) are provided with the multiunit altogether, support column (4) bottom all is connected with backup pad (401) No. one, backup pad (401) are used for the support of check out test set, casing (1) inner chamber is equipped with support column (402) No. two down, support column (402) are provided with the multiunit altogether No. two, support column (402) top fixedly connected with backup pad (403) No. two, backup pad (403) No. two are used for the support of check out test set.
6. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as claimed in claim 5, wherein: support column (4) and No. two support column (402) inner chambers all are equipped with supporting spring (404), supporting spring (404) top all is connected with flexible post (405), flexible post (405) are used for the support to a backup pad (401) and No. two backup pads (403), supporting spring (404) are used for reseing of flexible post (405).
7. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as claimed in claim 6, wherein: go up casing (101) upper surface one end and seted up No. two recess (5), manometer (501) are installed to No. two recess (5) inner chambers, No. two recess (5) are used for the installation of manometer (501), manometer (501) are used for the pressure detection of casing inner chamber.
8. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as claimed in claim 1, wherein: lower casing (1) one end is equipped with air feed joint (502), air feed joint (502) are used for being connected with check out test set.
9. An explosion-proof vacuum test enclosure for a helium mass spectrometer leak detector as defined in claim 8, wherein: the other end of the lower shell (1) is provided with a check valve (503), one end of the check valve (503) is connected with a threaded telescopic pipe (504), one end of the threaded telescopic pipe (504) is fixedly connected with an exhaust joint (505), the threaded telescopic pipe (504) and the exhaust joint (505) are both located in the inner cavity of the lower shell (1), and the exhaust joint (505) is used for being connected with equipment to be detected.
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| CN202111184948.3A CN113916462B (en) | 2021-10-12 | 2021-10-12 | Explosion-proof vacuum detection cover for helium mass spectrometer leak detector |
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| CN202111184948.3A CN113916462B (en) | 2021-10-12 | 2021-10-12 | Explosion-proof vacuum detection cover for helium mass spectrometer leak detector |
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