CN210922997U - Air bag sealing performance verification device - Google Patents
Air bag sealing performance verification device Download PDFInfo
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- CN210922997U CN210922997U CN201921809894.3U CN201921809894U CN210922997U CN 210922997 U CN210922997 U CN 210922997U CN 201921809894 U CN201921809894 U CN 201921809894U CN 210922997 U CN210922997 U CN 210922997U
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Abstract
The utility model relates to an air bag tightness verification device, which comprises a clamp, wherein the clamp comprises a mounting groove for accommodating an air bag, and an inflation groove is arranged on one side opposite to the mounting groove; the water chamber assembly comprises a shell arranged around the periphery of the clamp and a shaft body arranged on a bottom plate of the shell; the inflation groove is matched with a side plate of the shell to form an air chamber; and a gap is reserved between the bottom of the clamp and the bottom plate of the shell, so that the bottom of the clamp, the side plate of the shell and the outer side wall of the shaft body are matched to form a water chamber. The air bag tightness verifying device realizes off-line detection of air bag tightness, obviously improves maintenance efficiency, saves the construction period of the step during overhaul, and improves the reliability and controllability of air bag use.
Description
Technical Field
The utility model relates to a nuclear power technical field especially relates to an airbag sealing nature verification device.
Background
The CRF pump group belongs to CCM equipment of a nuclear power station, is a cold source of two-loop equipment, and whether the running state of the CRF pump group is good or not directly relates to the normal running of the whole unit.
As shown in fig. 1, in order to ensure the efficiency and emergency condition of the equipment, the ridge and Australia secondary CRF pump set is provided with two shaft seal structures, wherein the first shaft seal is packing seal from top to bottom, and the second seal structure is air bag seal. The packing seals play a shaft seal role under normal operation conditions, and the air bag is in a standby state at the moment; the sealed emergency condition of gasbag is used in the input, and it is great promptly to let out the leakage quantity when the packing, and under the sealed condition that loses efficacy of packing, for the efficiency of guarantee pump package changing the packing and maintenance personal's safety, need to use the sealed input of gasbag, and then change the packing. Therefore, the air bag sealing has great significance for the pump set. The gasbag seals the inefficacy and can cause to change packing maintenance duration cost-push under emergency (for the guarantee changes packing maintainer safety, need keep apart the duct and change the packing), and then causes the unit to reduce power, causes direct economic loss.
At present, whether the air bag has the function of sealing shaft water sealing can not be verified in an off-line state, the air bag can only be verified after the pump set returns to a seat and the CRF pump set finishes water inlet, if the pressure can not be maintained after verification, the air bag can be replaced by the pump set, and the time limit for grid connection is seriously influenced because the air bag needs to be completely inspected when the air bag is replaced due to the structure of the pump body, and the time limit for grid connection is roughly 15 days.
The air bag is not verified in the off-line state, unreliability of the air bag can be caused, major hidden dangers can be buried for safe and stable operation of subsequent equipment, and if the air bag is failed in the on-line state in the sealing performance, the major hidden dangers can be buried for safe and stable operation of the equipment.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing an airbag sealing verification device.
The utility model provides a technical scheme that its technical problem adopted is: an air bag sealing verification device is constructed, comprising
The clamp comprises a mounting groove for accommodating the air bag, and an inflation groove is arranged on one side opposite to the mounting groove;
the water chamber assembly comprises a shell arranged around the periphery of the clamp and a shaft body arranged on a bottom plate of the shell;
the inflation groove is matched with a side plate of the shell to form an air chamber; and a gap is reserved between the bottom of the clamp and the bottom plate of the shell, so that the bottom of the clamp, the side plate of the shell and the outer side wall of the shaft body are matched to form a water chamber.
Preferably, the clamp comprises a first annular plate and a second annular plate parallel to each other; and an annular riser disposed between the first annular plate and the second annular plate;
the annular vertical plate defines the mounting groove and the inflation groove with the first annular plate and the second annular plate.
Preferably, the air bag is provided with a fastening hole;
the annular vertical plate is provided with a first fastening piece which is matched with the fastening hole to fix the air bag on the mounting groove, or the annular vertical plate is provided with a mounting hole which is matched with the fastening hole to enable a second fastening piece to penetrate through the mounting hole to fix the air bag on the mounting groove.
Preferably, the annular vertical plate is provided with an air tap for communicating the air chamber with the air bag;
a first inflation joint communicated with the air chamber is arranged on a side plate of the shell;
the first inflation connector is connected with an external air source to inflate the air chamber, the air faucet is used for inflating the air bag, and the air bag is tightly held after being inflated.
Preferably, a positioning groove is formed in the circumferential side surface of one side, opposite to the shaft body, of the first annular plate and/or the second annular plate;
an O-shaped ring is arranged in the positioning groove to tension the shell and the clamp.
Preferably, the inner wall of the side plate of the shell protrudes to form a positioning step, and the bottom of the clamp abuts against the positioning step.
Preferably, the shell is further provided with a second inflation joint and an exhaust pipe plug which are communicated with the water chamber.
Preferably, the air bag tightness verifying device further comprises an air pressure gauge connected with the air chamber;
and the water pressure gauge is connected with the water chamber.
Preferably, the clamp is made of aluminum alloy;
the water chamber component is made of stainless steel.
Preferably, the air bag sealing verification apparatus further comprises a cover plate connected to the top of the jig.
Implement the utility model discloses following beneficial effect has: the air bag tightness verifying device fills the blank of an air bag tightness verifying tool and an air bag spare part acceptance checking tool, simulates the online operation working condition of an air bag, and truly and effectively detects the air bag tightness; the air bag tightness is detected off line, the maintenance efficiency is obviously improved, and the construction period of the step during overhaul is saved; the reliability and the controllability of the use of the air bag are improved, and the equipment rework maintenance caused by the online detection of the air bag sealing failure is avoided, the grid connection time is delayed, and the waste of a large amount of manpower, material resources and financial resources caused by the repeated maintenance of the equipment is avoided.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic diagram of the structure of a CRF pump unit in the related art;
fig. 2 is a schematic structural view of the airbag sealing performance verification device of the present invention;
fig. 3 is a front view of the airbag sealing verification device of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3 taken along section line A-A;
FIG. 5 is a partial schematic view of FIG. 4;
FIG. 6 is a schematic structural view of the clamp of the present invention;
figure 7 is a top view of the clamp of the present invention;
FIG. 8 is a cross-sectional view of FIG. 7 taken along section line B-B;
FIG. 9 is a partial schematic view of FIG. 8;
fig. 10 is a schematic structural diagram of the cover plate of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
As shown in fig. 2-5, the device for verifying air bag tightness of the present invention comprises a fixture 1, which includes a mounting groove 100 for accommodating an air bag, and an inflating groove 101 is disposed on one side opposite to the mounting groove 100.
And the water chamber assembly 2 comprises a shell surrounding the periphery of the clamp 1 and a shaft body 23 arranged on a bottom plate 22 of the shell.
Wherein, the gas charging groove 101 and the side plate 21 of the housing cooperate to form a gas chamber, and a gap is left between the bottom of the clamp 1 and the bottom plate 22 of the housing, so that the bottom of the clamp 1, the side plate 21 of the housing and the outer side wall of the shaft body 23 cooperate to form a water chamber 200.
As shown in fig. 6 to 9, in the present embodiment, the jig 1 includes a first annular plate 11 and a second annular plate 12 which are parallel to each other; and an annular vertical plate 13 disposed between the first annular plate 11 and the second annular plate 12, wherein the annular vertical plate 13 defines the mounting groove 100 and the inflation groove 101 between the first annular plate 11 and the second annular plate 12.
The first annular plate 11 and the second annular plate 12 are sized according to practical requirements, and in some embodiments, the first annular plate and the second annular plate may not be annular plates, such as square plates or elliptical plates, and are not limited herein. The size parameters of the annular vertical plate 13, such as height, thickness, diameter, etc., can be selected according to actual requirements, and are not limited here.
In this embodiment, a fastening hole is formed in the airbag, and a first fastening member is disposed on the annular vertical plate 13 and is matched with the fastening hole to fix the airbag to the mounting groove 100, or a mounting hole is disposed on the annular vertical plate 13 and is matched with the fastening hole to allow a second fastening member to pass through the mounting hole to fix the airbag to the mounting groove 100.
It can be understood that the airbag can be provided with bolt holes, and the annular vertical plate 13 is correspondingly provided with fastening bolts for fastening the airbag in the installation groove 100, or the external bolts can penetrate through the installation holes in the installation groove 100 and then cooperate with the bolt holes in the airbag to fasten the airbag on the installation groove 100, in some embodiments, the airbag can be fastened on the installation groove 100 by means of sticking/magic tapes or other attaching means, and it can be understood that there are various fixing forms, and there is no specific limitation here.
Further, an air nozzle 131 communicating the air chamber with the air bag is arranged on the annular vertical plate 13, and a first inflation joint 211 communicating with the air chamber is arranged on the side plate 21 of the shell.
Wherein, this first inflatable joint 211 connects outside air supply in order to aerify to this air chamber, and then aerifys to this gasbag through this air cock 131, can provide constant pressure gas for the gasbag through compressed gas or hand pump to simulate real CRF pump package air inflation condition, this axis body 23 is held tightly to this gasbag after aerifing.
Furthermore, a positioning groove is formed in a circumferential side surface of the first annular plate 11 and/or the second annular plate 12 opposite to the shaft body 23, and an O-ring is arranged in the positioning groove to tension the housing and the clamp 1.
As shown in fig. 8-9, the first annular plate 11 is provided with a positioning groove 111, the second annular plate 12 is provided with a positioning groove 121, and the positioning groove 111 and the positioning groove 121 are both provided with O-rings.
In this embodiment, this shell roughly is the cylinder structure, it includes bottom plate 22, and locate the curb plate 21 and the central point that the annular of this bottom plate 22 border closed and form and be equipped with the axis body 23, this axis body 23 can be through welded fastening to this bottom plate 22 on, the protruding location step that forms of curb plate 21 inner wall of this shell, this location step of 1 bottom butt of this anchor clamps, this anchor clamps 1 carries out the location installation through the location step with this shell promptly, and realize airtight relatively through realizing with the help of aforementioned O type circle, realize closely laminating, and then realize the mutual independence of air chamber and hydroecium. The positioning step is spaced apart from the bottom plate 22 such that the bottom of the jig 1 remains spaced apart from the bottom plate 22 after the jig is mounted on the positioning step, thereby forming the water chamber 200.
Further, the housing is provided with a second air charging connector 212 and a vent plug (not shown) which are communicated with the water chamber 200. The second inflation connector 212 may be disposed on the side plate 21 of the housing or on the bottom plate 22, and the exhaust plug may be disposed on the side plate 21 of the housing or on the bottom plate 22.
As shown in fig. 10, in the present embodiment, the airbag sealing verification apparatus further includes a cover plate 3 connected to the top of the clamp 1, wherein the cover plate 3 is in a ring-shaped plate structure and is detachably mounted to the top of the clamp 1 by screwing, and in some embodiments, may be mounted by snapping, or by pressing, etc., and is not limited herein.
This apron 3 cooperatees with anchor clamps 1, can avoid the gasbag to aerify the back inflation and make anchor clamps 1 warp, or prop bad anchor clamps 1 to this life who improves gasbag leakproofness verification device.
In the embodiment, the clamp 1 is made of aluminum alloy, so that the clamp is light, easy to carry, strong in oxidation resistance and convenient to operate and use; this hydroecium subassembly 2's material is the stainless steel, and firm intensity is big, and non-deformable has guaranteed the circularity of axis body 23 and shell, has improved the life of gasbag leakproofness verifying attachment. Of course, the clamp 1 and the water chamber assembly 2 may be made of other metal materials.
The air bag sealability verifying apparatus further includes a pressure gauge connected to the air chamber and a water pressure gauge connected to the water chamber 200.
In the embodiment, the air bag is firstly installed and fixed in the installation groove 100 of the clamp 1, the positioning groove is filled with the O-shaped ring, a small amount of lubricating grease is coated at the position of the O-shaped ring, the clamp 1 is integrally installed on the shell through the positioning step, the cover plate 3 is additionally installed, the clamp 1 and the shell form an independent air chamber and a water chamber 200, then the first inflation connector 211 is connected, the air chamber is inflated to 2.5bar by utilizing compressed air, the exhaust plug on the outer wall of the water chamber is unscrewed, the hand pump and related pipelines thereof and the second inflation connector 212 are utilized to fill water and exhaust the water chamber 200, when uniform water flows out from the exhaust plug, the exhaust plug can be screwed and pressurized to 1.5bar, whether pressure drop exists in 15min of air pressure and water pressure is observed through the barometer and the water pressure meter, if no pressure drop exists, the air bag.
The air bag sealing performance verifying device fills the blank of an air bag sealing performance verifying tool and an air bag spare part acceptance verifying tool, simulates the online operation working condition of an air bag, and truly and effectively detects the air bag sealing performance; the air bag tightness is detected off line, the maintenance efficiency is obviously improved, and the construction period of the step during overhaul is saved; the reliability and the controllability of the use of the air bag are improved, and the equipment rework maintenance caused by the online detection of the air bag sealing failure is avoided, the grid connection time is delayed, and the waste of a large amount of manpower, material resources and financial resources caused by the repeated maintenance of the equipment is avoided.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. An air bag tightness verifying device is characterized by comprising
The clamp (1) comprises a mounting groove (100) for accommodating an air bag, and an inflation groove (101) is arranged on the side opposite to the mounting groove (100);
the water chamber assembly (2) comprises a shell arranged around the periphery of the clamp (1) and a shaft body (23) arranged on a bottom plate (22) of the shell;
wherein the inflation groove (101) is matched with a side plate (21) of the shell to form an air chamber; a gap is reserved between the bottom of the clamp (1) and the bottom plate (22) of the shell, so that the bottom of the clamp (1), the side plate (21) of the shell and the outer side wall of the shaft body (23) are matched to form a water chamber (200).
2. The airbag tightness verifying device according to claim 1, characterized in that said clamp (1) comprises a first annular plate (11) and a second annular plate (12) parallel to each other; and an annular riser (13) provided between the first annular plate (11) and the second annular plate (12);
the annular vertical plate (13) defines the mounting groove (100) and the inflation groove (101) with the first annular plate (11) and the second annular plate (12).
3. The airbag tightness verifying device according to claim 2, wherein the airbag is provided with a fastening hole;
the annular vertical plate (13) is provided with a first fastening piece which is matched with the fastening hole to fix the air bag on the mounting groove (100), or the annular vertical plate (13) is provided with a mounting hole which is matched with the fastening hole to allow a second fastening piece to penetrate through the mounting hole to fix the air bag on the mounting groove (100).
4. The airbag tightness verifying device according to claim 2, wherein the annular riser (13) is provided with an air tap (131) for communicating the air chamber with the airbag;
a side plate (21) of the shell is provided with a first inflation joint (211) communicated with the air chamber;
the first inflation connector (211) is connected with an external air source to inflate the air chamber, the air nozzle (131) is used for inflating the air bag, and the air bag is tightly held on the shaft body (23) after being inflated.
5. The airbag tightness verifying device according to claim 2, characterized in that a positioning groove is provided on a circumferential side of the first annular plate (11) and/or the second annular plate (12) opposite to the shaft body (23);
an O-shaped ring is arranged in the positioning groove to tension the shell and the clamp (1).
6. The airbag tightness verifying device according to claim 1, characterized in that the inner wall of the side plate (21) of the housing is protruded to form a positioning step, and the bottom of the clamp (1) abuts against the positioning step.
7. The airbag tightness verifying device according to claim 1, wherein a second inflation connector (212) and a vent plug are further provided on the housing to communicate with the water chamber (200).
8. The airbag seal verification apparatus of claim 1, further comprising a gas pressure gauge connected to the gas chamber;
and the water pressure gauge is connected with the water chamber (200).
9. The airbag tightness verifying device according to claim 1, wherein the material of the clamp (1) is an aluminum alloy;
the water chamber component (2) is made of stainless steel.
10. The airbag tightness verification device according to claim 1, further comprising a cover plate (3) connected to the top of the jig (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921809894.3U CN210922997U (en) | 2019-10-25 | 2019-10-25 | Air bag sealing performance verification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921809894.3U CN210922997U (en) | 2019-10-25 | 2019-10-25 | Air bag sealing performance verification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210922997U true CN210922997U (en) | 2020-07-03 |
Family
ID=71348167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921809894.3U Active CN210922997U (en) | 2019-10-25 | 2019-10-25 | Air bag sealing performance verification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210922997U (en) |
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2019
- 2019-10-25 CN CN201921809894.3U patent/CN210922997U/en active Active
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