CN108562413B - Pipe fitting gas tightness detection workbench - Google Patents
Pipe fitting gas tightness detection workbench Download PDFInfo
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- CN108562413B CN108562413B CN201810606182.5A CN201810606182A CN108562413B CN 108562413 B CN108562413 B CN 108562413B CN 201810606182 A CN201810606182 A CN 201810606182A CN 108562413 B CN108562413 B CN 108562413B
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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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a pipe fitting air tightness detection workbench which comprises an inflating device, a high-pressure auxiliary tank, a detection device, a first pipe fitting air tightness pressurization positioning device and a second pipe fitting air tightness pressurization positioning device, wherein the inflating device is arranged on the high-pressure auxiliary tank; the detection device is provided with a first air outlet pipe; the high-pressure auxiliary tank is connected with the inflating device through a second air inlet pipe; the high-pressure auxiliary tank is also provided with a second air outlet pipe, and the first air outlet pipe and the second air outlet pipe are communicated with the main air inlet pipe through a tee joint; the main air inlet pipe is connected with the first pipe fitting airtight pressurizing and positioning device, the other end of the first pipe fitting airtight pressurizing and positioning device is connected with a pipe fitting, the other end of the pipe fitting is connected with the second pipe fitting airtight pressurizing and positioning device, and the other end of the second pipe fitting airtight pressurizing and positioning device is connected with a main air outlet pipe; according to the invention, the mode that the high-pressure auxiliary tank and the detection device are controlled by the electromagnetic valve to pressurize the pipe fitting is adopted, so that the time for detecting the pipe fitting is reduced, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of pipe fitting performance detection equipment manufacturing, in particular to a pipe fitting air tightness detection workbench.
Background
In automobile intake pipe production, the intake pipe is formed by a plurality of bodys and base welding, because the body welding department appears the leak source easily and is difficult to discover, perhaps is burnt through in the welding, needs carry out the gas tightness and detects. The existing air tightness test conditions for the pipe fittings are as follows: (1) without instrument, water test was used. Workers use the rubber pipes to connect the two ends of the pipe fitting, put the pipe fitting into water, observe the leakage condition, and judge the pipe fitting to be an unqualified product when bubbles emerge. The disadvantages are as follows: the method is original, the workload is large, only qualitative and not quantitative, and the inspection effect is not ideal. (2) The air leakage detector is mostly a manual test. Each worker corresponds to a simple air leakage detector, the two ends of the pipe fitting to be tested are connected manually or by using some fixed dies, then the worker observes the numerical value on the air leakage detector, and the numerical value is qualified within a specified range. The disadvantages are as follows: the manual detection only works in a single flow, and is difficult to be used for the inspection of a large number of products. Aiming at a first detection mode, Chinese patent with application publication number CN 105067197A discloses equipment and a method for detecting the air tightness of an automobile air inlet pipe. The equipment comprises a frame, a water tank, a lifting device, a detection table, an air source interface and a control device; the detection table comprises a clamp arranged on the base, one end of the clamp is provided with a plug, and the other end of the clamp is provided with an inflating device; the inflation device is communicated with the air source interface through a pressure reducing valve; a lifting hydraulic cylinder is connected above the inflating device, and the inflating device moves up and down under the driving of the lifting hydraulic cylinder; the control device is respectively electrically connected with the lifting device, the air charging device and the lifting hydraulic cylinder. The device has reasonable structure and high detection efficiency, and ensures the processing quality of the air inlet pipe. The whole process is automatically controlled. The pressure sensor and the exhaust valve are arranged, so that the air tightness detection is realized without immersing the water tank, the application range and the practicability of the air tightness detection equipment are improved, and the automatic judgment of the air tightness is realized. Considerable manpower is required when there are a large number of products to be inspected. Aiming at the second detection mode, the chinese patent with the publication number CN 205038030U discloses a pipe fitting airtightness detection device, which comprises a plug mechanism, a negative pressure machine and a detection mechanism. The plug mechanism is connected with one end of the pipe fitting and used for plugging one end of the pipe fitting, and comprises a flexible sealing ring and a compression assembly for compressing the flexible sealing ring to enable the flexible sealing ring to expand along the radial direction. The other end of the pipe fitting is connected with the negative pressure end of the negative pressure machine, and the negative pressure machine extracts air from the other end of the pipe fitting. The detection mechanism is connected with the negative pressure end of the negative pressure machine and used for detecting the negative pressure value in the pipe fitting.
The common point of the two technical schemes is that the structure is complicated, and the technical scheme with application publication number of CN 105067197A realizes that the pipe fitting is automatically placed in a water tank for air tightness detection, but is not suitable for special pipe fittings for water detection; the technical scheme with the authorization notice number of CN 205038030U can generate negative pressure which is not enough to affect the detection effect and precision, the structure of the plug mechanism is complex, the air pressure in the air cylinder is mainly utilized to be reduced, the piston rod retracts and compresses, the flexible sealing ring is enabled to be arched, expanded and sealed to the pipe fitting, however, the air cylinder has poor sealing performance, and the defect that external leakage is easily generated causes the instability of the whole plug mechanism, and the detection result is affected.
Therefore, a tube tightness detecting workbench with a reliable tube tightness pressurizing and positioning device is needed to solve the above technical problems.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, the present invention aims to provide a workbench for detecting the air tightness of pipe fittings.
The invention is realized by the following technical scheme.
A pipe fitting air tightness detection workbench comprises an inflating device, a high-pressure auxiliary tank, a detection device, a first pipe fitting air tightness pressurization positioning device and a second pipe fitting air tightness pressurization positioning device; the air charging device is connected with the detection device through a first air inlet pipe, and the detection device is also provided with a first air outlet pipe; the high-pressure auxiliary tank is connected with the inflating device through a second air inlet pipe; the high-pressure auxiliary tank is also provided with a second air outlet pipe, and the first air outlet pipe and the second air outlet pipe are communicated with the main air inlet pipe through a tee joint; the main air inlet pipe is connected with the first pipe fitting airtight pressurizing and positioning device, the other end of the first pipe fitting airtight pressurizing and positioning device is connected with a pipe fitting, the other end of the pipe fitting is connected with the second pipe fitting airtight pressurizing and positioning device, and the other end of the second pipe fitting airtight pressurizing and positioning device is connected with a main air outlet pipe; the air inlet of the first pipe fitting airtight pressurizing and positioning device and the air outlet of the second pipe fitting airtight pressurizing and positioning device are respectively provided with a flow detector, the first air outlet pipe is provided with a first electromagnetic valve, and the second air outlet pipe is provided with a second electromagnetic valve.
Specifically, the main air outlet pipe can be an air inlet pipe of the second pipe fitting airtight pressurization positioning device or an air outlet pipe of the second pipe fitting airtight pressurization positioning device; the first pipe fitting airtight pressurizing and positioning device and the second pipe fitting airtight pressurizing and positioning device seal and fix two ends of the pipe fitting; the second electromagnetic valve controls the second air outlet pipe to be inflated for 2S and then to be stopped, the first electromagnetic valve controls the first air outlet pipe to inflate the pipe fitting, whether the pipe fitting leaks air or not is judged according to pressure values of two ends of the pipe fitting, the detection time can be shortened through pressurization and inflation twice, and the working efficiency is improved.
Preferably, the first pipe fitting airtight pressurizing and positioning device and the second pipe fitting airtight pressurizing and positioning device both comprise a base and a pneumatic pressurizing mechanism fixedly mounted on the base, the pneumatic pressurizing mechanism comprises a support, a cylinder sleeve, a push rod, a spring and a rear cover plate, and the cylinder sleeve is mounted on the support; the cylinder sleeve is of a through hole type structure, and a sealing guide ring is arranged in the inner cavity of the through hole; a push rod is sleeved in the cylinder sleeve, a sealing shoulder is arranged on the push rod, and the sealing guide ring and the sealing shoulder form a sealed air pressure cavity; the spring is sleeved outside the front part of the push rod and is arranged between the sealing shoulder and the bracket to provide restoring force; the head end of the push rod is provided with a sealing plug; the sealing plug is provided with an air inlet which is communicated with an air inlet channel arranged in the push rod.
Preferably, the seal guide ring and the seal shoulder are provided with seal grooves for fixing the seal ring. Its aim at, the implementation of main intake pipe is right the in-process of atmospheric pressure intracavity pressurization pressure release alive, the axial displacement of relative cylinder has been realized to the push rod under the effect of pressure differential, good gas tightness in the atmospheric pressure intracavity is guaranteed to the sealing washer in the seal groove, has guaranteed operating condition's smooth operation, makes whole propelling movement process more reliable and more stable.
Preferably, a sealing air bag is arranged on the outer ring of the sealing plug and communicated with an air passage arranged in the sealing plug. When after the sealing plug gets into the pipe fitting hole, in the main air inlet pipeline implementation pressurization process that admits air to the pipe fitting, because sealing airbag with the air flue intercommunication of establishing in the sealing plug, the atmospheric pressure in the sealing airbag also can increase thereupon, under the effect of pressure difference, sealing airbag can expand gradually, hugs closely the pipe fitting pass, realizes sealedly, and inlet pressure is big more, and sealed effect is better, under the effect that does not need the external force, realizes the self sealedly.
Preferably, the outer wall of the sealing plug is of a cylindrical wedge-shaped structure. The machining precision of pipe fitting has the error, and the diameter of pipe fitting hole also has the deviation, the wedge structure sealed end cap self diameter is the gradual change nature, and at the propulsion in-process, little head end is in the front, and the major part end can be laminated with the pipe fitting gradually after, forms preliminary sealing, has effectively avoided pipe fitting hole deviation and the sealed bad condition that appears.
Preferably, the sealing plug is detachably connected with the push rod. Its aim at, the specification of pipe fitting is different, when carrying out airtight detection to different pipe fittings, can quick replacement end cap, the adaptability of reinforcing equipment increases the availability factor of equipment, makes its economic effect maximize.
Preferably, a sealing gasket is arranged between the sealing plug and the push rod connecting part. The sealing device aims to guarantee the sealing performance between the sealing plug and the push rod and improve the reliability of the device.
During operation, will examine the pipe fitting to pass through the pipe fitting fixing base fastening fixedly earlier, the second air inlet admits air, pressurizes the atmospheric pressure chamber, under the effect of pressure difference, the tension that the spring was overcome to the push rod produces the displacement, will seal the end cap and stretch into and examine the pipe fitting hole of examining, treat seal the end cap and examine the pipe fitting formation preliminary sealed back, first air inlet goes on, to examining and implement the pressurization in the pipe fitting, meanwhile, sealed gasbag also expands under the effect of pressure, realize with the inseparable laminating of pipe fitting hole, form the secondary self sealss to along with the increase of atmospheric pressure, sealing performance also increases thereupon.
Preferably, still be equipped with the pipe fitting fixing base on the base, the pipe fitting fixing base includes U type base, U type apron, the U type apron is articulated to be fixed on the U type base, be equipped with the through-hole on the expansion end of U type apron, correspond on the U type base be equipped with the screw hole of through-hole looks adaptation, the U type apron passes through the locking bolt to be fixed on the U type base. The pipe fitting is fixed through the U-shaped base and the U-shaped cover plate and then is pressurized and detected by the pneumatic pressurizing mechanism.
Preferably, the U-shaped base and the U-shaped bottom of the U-shaped cover plate are respectively provided with an anti-slip pad.
Compared with the prior art, the invention has the beneficial effects that:
1. the mode that the high-pressure auxiliary tank and the detection device are controlled by the electromagnetic valve to pressurize the pipe fitting reduces the time for detecting the pipe fitting and improves the working efficiency;
2. the air bag type sealing structure is adopted, so that no external force is required to be applied in the pressurizing process, and self-sealing is realized;
3. the pneumatic pushing device has the advantages that the automation degree of the device is enhanced, the labor intensity is reduced, and the labor efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic view of a pipe bracket.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 5 is a schematic structural diagram of embodiment 4 of the present invention.
Fig. 6 is a schematic structural view of a pipe fixing seat in embodiment 4 of the present invention.
In the figure: 1. an inflator; 101. a first intake pipe; 102. a second intake pipe; 2. a high pressure auxiliary tank; 201. a second air outlet pipe; 202. a second solenoid valve; 3. a detection device; 301. a first air outlet pipe; 302. a first solenoid valve; 4. the first pipe fitting airtight pressurization positioning device; 401. an air inlet; 5. the second pipe fitting airtight pressurization positioning device; 501. an air outlet; 6. a tee joint; 7. a main air inlet pipe; 8. a pipe fitting; 9. a main air outlet pipe; 901. a third electromagnetic valve; 10. a flow detector; 11. a base; 12. a pneumatic pressurizing mechanism; 1201. a support; 1202. a cylinder liner; 1203. a push rod; 1204. a spring; 1205. a rear cover plate; 1206. a first air outlet; 1207. a seal guide ring; 1208. sealing the shoulder; 1209. a pneumatic chamber; 1210. sealing the plug; 1211. an air inlet channel; 1212. a first air inlet; 1213. a sealing groove; 1214. sealing the air bag; 1215. an airway; 1216. sealing gaskets; 1217. a second air inlet; 13. a pipe fitting fixing seat; 1301. a U-shaped base; 1302. a U-shaped cover plate; 1303. a through hole; 1304. a threaded hole; 1305. locking the bolt; 1306. a non-slip mat; 1307. a U-shaped seat plate; 1308. a splint; 1309. a chute; 1310. a slideway; 1311. locking the nut; 14. a pipe bracket.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood 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 of the present invention without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in fig. 1-2, a pipe airtightness detection workbench comprises an inflation device 1, a high-pressure auxiliary tank 2, a detection device 3, a first pipe airtightness pressurization positioning device 4, and a second pipe airtightness pressurization positioning device 5; the inflation device 1 is connected with the detection device 3 through a first air inlet pipe 101, and the detection device 3 is further provided with a first air outlet pipe 301; the high-pressure auxiliary tank 2 is connected with the inflator 1 through a second intake pipe 102; the high-pressure auxiliary tank 2 is also provided with a second air outlet pipe 201, and the first air outlet pipe 301 and the second air outlet pipe 201 are communicated with a main air inlet pipe 7 through a tee joint 6; the main air inlet pipe 7 is connected with the first pipe fitting airtight pressurization positioning device 4, the other end of the first pipe fitting airtight pressurization positioning device 4 is connected with a pipe fitting 8, the other end of the pipe fitting 8 is connected with the second pipe fitting airtight pressurization positioning device 5, the other end of the second pipe fitting airtight pressurization positioning device 5 is connected with a main air outlet pipe 9, and a third electromagnetic valve 901 is arranged on the main air outlet pipe 9; a flow detector 10 is respectively arranged at the air inlet 401 of the first pipe fitting airtight pressurizing and positioning device 4 and the air outlet 501 of the second pipe fitting airtight pressurizing and positioning device 5; a first electromagnetic valve 302 is arranged on the first air outlet pipe 301, and a second electromagnetic valve 202 is arranged on the second air outlet pipe 201.
Specifically, the main air outlet pipe 9 may be an air inlet pipe of the second pipe fitting airtight pressurization positioning device 5 or an air outlet pipe of the second pipe fitting airtight pressurization positioning device 5; the first pipe fitting airtight pressurizing and positioning device 4 and the second pipe fitting airtight pressurizing and positioning device 5 seal and fix two ends of a pipe fitting 8; the second electromagnetic valve 202 controls the second air outlet pipe 201 to inflate for 2S and then stop, the first electromagnetic valve 302 controls the first air outlet pipe 301 to inflate the pipe fitting 8, whether the pipe fitting leaks air or not is judged according to pressure values at two ends of the pipe fitting, detection time can be shortened through pressurization and inflation twice, and working efficiency is improved.
A pipe bracket 14 is arranged between the first pipe airtight pressurizing and positioning device 4 and the second pipe airtight pressurizing and positioning device 5.
Example 2
As shown in fig. 3, a pipe airtightness detecting table is similar to the structure principle of the embodiment, and is different from embodiment 1 in that each of the first pipe airtight pressurizing positioning device 4 and the second pipe airtight pressurizing positioning device 5 includes a base 11 and a pneumatic pressurizing mechanism 12 fixedly mounted on the base 11, the pneumatic pressurizing mechanism 12 includes a support 1201, a cylinder sleeve 1202, a push rod 1203, a spring 1204 and a back cover plate 1205, and the cylinder sleeve 1202 is mounted on the support 1201; the cylinder sleeve 1202 is of a through hole type structure, and a sealing guide ring 1207 is arranged in the inner cavity of the through hole; a push rod 1203 is sleeved in the cylinder sleeve 1202, a sealing shoulder 1208 is arranged on the push rod 1203, and the sealing guide ring 1207 and the sealing shoulder 1208 form a sealed air pressure cavity 1209; the spring 1204 is sleeved on the front part of the push rod 1203 and is arranged between the sealing shoulder 1208 and the bracket 1201 to provide restoring force; a sealing plug 1210 is arranged at the head end of the push rod 1203; an air inlet of the sealing plug 1210 is communicated with an air inlet 1211 arranged in the push rod 1203; the cylinder liner 1202 is provided with a first inlet 1212 and a second inlet 1217, the first inlet 1212 is disposed at the tail of the cylinder liner 1202 and is communicated with the inlet 1211; the second inlet 1217 is placed in the middle of the cylinder liner 1202 and communicates with the pneumatic chamber 1209.
The seal guide ring 1207 and the seal shoulder 1208 are both provided with a seal groove 1213 for fixing a seal ring.
The outer ring of the sealing plug 1210 is provided with a sealing air bag 1214, and the sealing air bag 1214 is communicated with an air inlet channel 1215 arranged in the sealing plug 1210.
The outer wall of the sealing plug 1210 is in a cylindrical wedge-shaped structure.
The sealing plug 1210 is detachably connected with the push rod 1203.
A sealing gasket 1216 is arranged between the connecting part of the sealing plug 1210 and the push rod 1203. During operation, will examine the pipe fitting to pass through pipe fitting fixing base 13 fastening fixedly earlier, second air inlet 1217 admits air, pressurize atmospheric pressure chamber 1209, under the effect of pressure difference, push rod 1203 overcomes spring 1204's tension and produces the displacement, stretch into with sealed end cap 1210 and examine the pipe fitting 8 hole of examining, treat sealed end cap 1210 and examine the preliminary sealed back of pipe fitting 8 formation, first air inlet 1212 goes on, to examining implement the pressurization in the pipe fitting 8, meanwhile, sealed gasbag 1214 also expands under the effect of pressure, realize the inseparable laminating with the pipe fitting 8 hole, form secondary self sealss, and along with the increase of atmospheric pressure, sealing performance also increases thereupon.
Example 3
As shown in fig. 4, a pipe airtightness detection workbench is similar to the structure principle of embodiments 1 and 2, and the present embodiment is different from embodiments 1 and 2 in that a pipe fixing seat 13 is further disposed on a base 11, the pipe fixing seat 13 includes a U-shaped base 1301 and a U-shaped cover 1302, the U-shaped cover 1302 is hinged and fixed to the U-shaped base 1301, a through hole 1303 is disposed at a movable end of the U-shaped cover 1302, a threaded hole 1304 adapted to the through hole 1303 is correspondingly disposed on the U-shaped base 1301, and the U-shaped cover 1302 is fixed to the U-shaped base 1301 by a locking bolt 1305; the U-shaped bases 1301 and the U-shaped cover plate 1302 are respectively provided with anti-slip pads 1306.
Example 4
As shown in fig. 5 to 6, the present embodiment is similar to the structural principles of embodiments 1, 2, and 3, and is different from embodiments 1, 2, and 3 in that the pipe fixing seat 13 includes a U-shaped seat 1307 and a clamping plate 1308, the clamping plate 1308 is hinged on the U-shaped seat 1307 in bilateral symmetry, a sliding slot 1309 is provided on the clamping plate 1308, a vertical sliding way is provided on the U-shaped seat 1307, the free end of the clamping plate 1308 is arranged in a cross manner, and the cross portion 1310 is locked and fixed by a locking nut 1311 passing through the sliding slot 1309 and the sliding way 1310. The pipe fitting fixing base 13 in this embodiment can adapt to pipe fittings of different specifications, and the included angle of the clamping plate 1308 is controlled by adjusting the upper position and the lower position of the locking nut 1311, so that the clamping height of the pipe fitting is controlled, and the use performance of equipment is enhanced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention.
Claims (8)
1. The pipe fitting air tightness detection workbench is characterized by comprising an inflating device (1), a high-pressure auxiliary tank (2), a detection device (3), a first pipe fitting air tightness pressurization positioning device (4) and a second pipe fitting air tightness pressurization positioning device (5); the inflation device (1) is connected with the detection device (3) through a first air inlet pipe (101), and the detection device (3) is further provided with a first air outlet pipe (301); the high-pressure auxiliary tank (2) is connected with the inflating device (1) through a second air inlet pipe (102); the high-pressure auxiliary tank (2) is also provided with a second air outlet pipe (201), and the first air outlet pipe (301) and the second air outlet pipe (201) are communicated with the main air inlet pipe (7) through a tee joint (6); the main air inlet pipe (7) is connected with the first pipe fitting airtight pressurization positioning device (4), the other end of the first pipe fitting airtight pressurization positioning device (4) is connected with a pipe fitting (8), the other end of the pipe fitting (8) is connected with the second pipe fitting airtight pressurization positioning device (5), the other end of the second pipe fitting airtight pressurization positioning device (5) is connected with a main air outlet pipe (9), a third electromagnetic valve (901) is arranged on the main air outlet pipe (9), and the tail end of the main air outlet pipe (9) is connected with an external air source or an air charging device (1); a flow detector (10) is respectively arranged at the air inlet (401) of the first pipe fitting airtight pressurizing and positioning device (4) and the air outlet (501) of the second pipe fitting airtight pressurizing and positioning device (5); a first electromagnetic valve (302) is arranged on the first air outlet pipe (301), and a second electromagnetic valve (202) is arranged on the second air outlet pipe (201); the first pipe fitting airtight pressurizing and positioning device (4) and the second pipe fitting airtight pressurizing and positioning device (5) respectively comprise a base (11) and a pneumatic pressurizing mechanism (12) fixedly installed on the base (11), the pneumatic pressurizing mechanism (12) comprises a support (1201), a cylinder sleeve (1202), a push rod (1203), a spring (1204) and a rear cover plate (1205), and the cylinder sleeve (1202) is installed on the support (1201); the cylinder sleeve (1202) is of a through hole type structure, and a sealing guide ring (1207) is arranged in the inner cavity of the through hole; a push rod (1203) is sleeved in the cylinder sleeve (1202), a sealing shoulder (1208) is arranged on the push rod (1203), and the sealing guide ring (1207) and the sealing shoulder (1208) form a sealed air pressure cavity (1209); the spring (1204) is sleeved on the front part of the push rod (1203) and is arranged between the sealing shoulder (1208) and the bracket (1201) to provide restoring force; a sealing plug (1210) is arranged at the head end of the push rod (1203); an air inlet of the sealing plug (1210) is communicated with an air inlet passage (1211) arranged in the push rod (1203); the outer ring of the sealing plug (1210) is provided with a sealing air bag (1214), and the sealing air bag (1214) is communicated with an air passage (1215) arranged in the sealing plug (1210).
2. The pipe fitting airtightness detection workbench according to claim 1, wherein each of the seal guide ring (1207) and the seal shoulder (1208) is provided with a seal groove (1213) for fixing a seal ring.
3. The pipe fitting air tightness detection workbench according to claim 1, wherein the outer wall of the sealing plug (1210) is in a cylindrical wedge structure.
4. The pipe fitting air tightness detection workbench according to claim 1, characterized in that the sealing plug (1210) is detachably connected with the push rod (1203).
5. The pipe fitting airtightness detection workbench according to claim 4, wherein a sealing gasket (1216) is disposed between the connection portion of the sealing plug (1210) and the push rod (1203).
6. The pipe airtightness detecting workbench according to claim 1, wherein a pipe fixing seat (13) is further disposed on the base (11), the pipe fixing seat (13) comprises a U-shaped base (1301) and a U-shaped cover plate (1302), the U-shaped cover plate (1302) is hinged and fixed on the U-shaped base (1301), a through hole (1303) is disposed at a movable end of the U-shaped cover plate (1302), a threaded hole (1304) adapted to the through hole (1303) is correspondingly disposed on the U-shaped base (1301), and the U-shaped cover plate (1302) is fixed on the U-shaped base (1301) through a locking bolt (1305).
7. The pipe fitting air tightness detection workbench according to claim 6, wherein anti-slip pads (1306) are respectively arranged on the U-shaped bottom of the U-shaped base (1301) and the U-shaped cover plate (1302).
8. The pipe airtightness detection workbench according to claim 1, wherein a pipe bracket (14) is disposed between the first pipe airtightness pressurization positioning device (4) and the second pipe airtightness pressurization positioning device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810606182.5A CN108562413B (en) | 2018-06-13 | 2018-06-13 | Pipe fitting gas tightness detection workbench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810606182.5A CN108562413B (en) | 2018-06-13 | 2018-06-13 | Pipe fitting gas tightness detection workbench |
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| CN108562413A CN108562413A (en) | 2018-09-21 |
| CN108562413B true CN108562413B (en) | 2020-12-18 |
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| CN201810606182.5A Active CN108562413B (en) | 2018-06-13 | 2018-06-13 | Pipe fitting gas tightness detection workbench |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109855816A (en) * | 2019-02-28 | 2019-06-07 | 合肥江淮汽车制管有限公司 | Air tightness detection equipment based on nylon tube fuel pipe |
| CN110426154A (en) * | 2019-07-15 | 2019-11-08 | 合肥和瑞机械制造有限公司 | A kind of multifunctional pipe air-tightness detection device |
| CN110440991A (en) * | 2019-08-28 | 2019-11-12 | 卧龙电气驱动集团股份有限公司 | Airtight quality and whole air-tightness detection device and method between lead-acid accumulator monomer |
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