CN210571249U - Auxiliary water tank leakage detection device - Google Patents
Auxiliary water tank leakage detection device Download PDFInfo
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- CN210571249U CN210571249U CN201921061525.0U CN201921061525U CN210571249U CN 210571249 U CN210571249 U CN 210571249U CN 201921061525 U CN201921061525 U CN 201921061525U CN 210571249 U CN210571249 U CN 210571249U
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- water tank
- auxiliary water
- metal probe
- press
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Abstract
The utility model provides a detection device is revealed to expansion tank, detection device includes frame, gas tightness determine module, metal probe press-fitting mechanism, and metal probe press-fitting mechanism includes the bottom plate, sets up the double-layered dress board that is used for placing expansion tank on the bottom plate, the lateral part of pressing from both sides the dress board is provided with the pressure equipment cylinder, the pressure equipment cylinder passes through the connecting plate and is connected with the back-pull cylinder that sets up in expansion tank side top, pressure equipment cylinder motion drives the back-pull cylinder is reciprocating motion along the expansion tank position. The beneficial effects of the utility model are embodied in: adopt the utility model discloses a device can be on the basis that does not increase cycle time, goes on simultaneously to expansion tank's negative pressure test and malleation leak test, has practiced thrift check-out time greatly. Defective products can be effectively identified, and quality risks are greatly reduced. The positive pressure testing mechanism and the secondary pressure testing mechanism are integrated on the same rack, so that the occupied area of equipment is reduced, and the equipment investment and labor cost are saved.
Description
Technical Field
The utility model belongs to the technical field of the gas tightness detects, concretely relates to expansion tank reveals detection device and detection method thereof.
Background
With the improvement of the life quality of people, automobiles become indispensable transportation tools in the life of people. The auxiliary water tank of the automobile is a component of an engine cooling system and plays a role in balancing the pressure of the water tank. The conventional auxiliary water tank is basically a plastic container manufactured by a welding method, but specific equipment is required to detect the air tightness of the welded container after welding is finished, and the auxiliary water tank can be put into use after reaching the standard. Some expansion tank products are used for detecting the liquid level of cooling liquid in the water tank through assembling a metal probe on the market, and the probe is assembled with the expansion tank body in a press-fitting mode and sealed by a sealing ring. All the pipe orifices of the product are plugged, only 1 inflation inlet is reserved, then the product is placed in water, 1bar of air is filled into the product, if no air bubble exists at the welding seam, the product is considered to be zero leakage, and no air bubble exists at the welding seam of the OK product. In general, the leakage standard of OK products of auxiliary water tanks with the volume of less than 4 liters is that the leakage amount is less than 20ml/Min under the relative pressure of 1 Bar.
When the sealing ring supplied materials on the metal probe are possibly damaged, the sealing ring is also possibly damaged in the press fitting process, and the product leakage is caused. However, since the seal ring has elasticity, even if it is broken, only a slight leakage may occur after press-fitting. When the leakage amount at the probe is less than 20ml/Min, the whole leakage amount of the auxiliary water tank is less than 20ml/Min, but the leakage existing at the probe cannot be detected, but the micro leakage still causes the leakage of the cooling liquid. Therefore, the assembly of the probe must be leak tested.
And 2 leakage testing procedures are required for the press mounting of the metal probe, so that the auxiliary water tank product has 2 leakage testing procedures, and the traditional 1 leakage testing device can only perform 1 testing procedure, so that 2 leakage testing devices need to be invested, and the equipment cost, the manual procedure and the occupied area are increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a detection device is revealed to expansion tank and detection method thereof.
The purpose of the utility model is realized through the following technical scheme:
the device for detecting leakage of the auxiliary water tank comprises a frame, an air tightness detection assembly arranged on the upper portion of the frame, and a metal probe press-fitting mechanism arranged on the lower portion of the frame, wherein the metal probe press-fitting mechanism comprises a bottom plate and a clamping plate arranged on the bottom plate and used for placing the auxiliary water tank, a press-fitting cylinder is arranged on the side portion of the clamping plate and connected with a back-pull cylinder arranged above the side of the auxiliary water tank through a connecting plate, and the press-fitting cylinder moves to drive the back-pull cylinder to reciprocate along the position of the auxiliary water tank.
Preferably, a metal probe is connected to a cylinder shaft of the back-pull cylinder, a sealing ring is arranged on the metal probe, and the back-pull cylinder moves to drive the metal probe to reciprocate along the auxiliary water tank.
Preferably, a pressure sensor for detecting pressure is further disposed on the metal probe.
Preferably, a displacement sensor is arranged on the connecting plate.
Preferably, still be provided with the negative pressure determine module on the bottom plate, the negative pressure determine module comprises two three-way valves, vacuum generator and stop valve, the stop valve with pressure sensor electric connection.
Preferably, the cylinder shaft of the press-fitting cylinder is arranged in a direction opposite to the cylinder shaft of the back-pull cylinder, and when the cylinder shaft of the press-fitting cylinder does extension movement, the back-pull cylinder is far away from the auxiliary water tank.
Preferably, the air tightness detection assembly comprises a manual pressure regulating valve, an air storage tank, an electric proportional valve and a stop valve, and a two-position three-way valve is arranged between the pneumatic pressure regulating valve and the stop valve.
Preferably, the metal probe press-fitting mechanism further comprises a blocking cylinder for blocking the orifice of the auxiliary water tank.
Preferably, the method for detecting a subtank leakage detecting apparatus as set forth in any one of the above, comprises the steps of,
s1, placing the auxiliary water tank to be detected on the clamping plate, plugging the pipe orifice of the auxiliary water tank through the plugging cylinder, and only reserving a detection charging port;
s2, before detection, the inflation inlet is in a state of being communicated with the outside, and the cylinder shaft of the press-fitting cylinder is in an extending state, namely the back-pull cylinder is far away from the auxiliary water tank; the press-fitting cylinder works to drive the reverse pull cylinder to move to the auxiliary water tank preliminarily, and the motion of the reverse pull cylinder is detected and positioned through the displacement sensor;
s3, the back-pull cylinder works to drive the metal probe to move inwards towards the auxiliary water tank along the inflating opening of the auxiliary water tank for micro adjustment until the inflating opening is completely sealed by a sealing ring on the metal probe;
s4, detecting the positive pressure leakage amount in the auxiliary water tank through the air tightness detection assembly on the upper part of the rack;
s5, carrying out negative pressure leakage test detection on the auxiliary water tank through the negative pressure detection assembly on the bottom plate;
and S6, after the detection is finished, the reverse pulling cylinder and the press mounting cylinder return respectively, and the leakage test of the whole auxiliary water tank is completed.
Preferably, the negative pressure detection of S5 includes the following steps:
s51, in the inflation stage, the two-position three-way valve on the bottom plate is opened, the vacuum generator generates negative pressure, and therefore the negative pressure is formed in the sealed pipe of the metal probe until the set value required by the negative pressure is reached;
s52, in the pressure maintaining stage, the stop valve is controlled to be closed through the two-position three-way valve on the bottom plate, and the air in the pipe at the metal probe is stably fused after a period of time,
and S53, in the measuring stage, because the pressure sensor is indirectly communicated with the auxiliary water tank, the pressure in the product can be measured in real time through the pressure sensor, and the leakage is judged through the pressure difference between the beginning and the end of measurement.
The beneficial effects of the utility model are embodied in: adopt the utility model discloses a device can be on the basis that does not increase cycle time, goes on simultaneously to expansion tank's negative pressure test and malleation leak test, has practiced thrift check-out time greatly. Defective products can be effectively identified, and quality risks are greatly reduced. The positive pressure testing mechanism and the secondary pressure testing mechanism are integrated on the same rack, so that the occupied area of equipment is reduced, and the equipment investment and labor cost are saved.
Drawings
FIG. 1: the utility model discloses a device structure schematic diagram.
FIG. 2: the utility model discloses well metal probe pressure equipment mechanism's schematic structure diagram.
Detailed Description
The utility model discloses a detection device is revealed to a pair water tank, it is shown with reference to fig. 1-2, including frame 1, the bottom of frame 1 is provided with the movable pulley of being convenient for remove. The upper portion of frame is provided with division board 3, be provided with gas tightness detection subassembly 4 on the division board 3, the lower part of frame 1 is provided with operation mesa 2, set up in metal probe pressure equipment mechanism 3 on the operation mesa 2. In the fig. 1, only the detection device on one side of the rack is shown, and in practice, the detection device can be arranged on the other side of the rack in the same way, that is, both sides of the rack can be detected simultaneously, so that the efficiency is improved better.
The air tightness detection assembly 4 comprises a manual pressure regulating valve, an air storage tank, an electric proportional valve and a stop valve which are connected with each other, and a two-position three-way valve is arranged between the pneumatic pressure regulating valve and the stop valve. The air tightness detection component 4 is used for detecting positive pressure leakage of the auxiliary water tank.
The metal probe press-fitting mechanism 3 comprises a bottom plate 61 and a clamping plate 62 which is arranged above the bottom plate 61 and used for placing an auxiliary water tank, wherein the clamping plate 62 is erected on the bottom plate 61 through a bracket.
The side part of the clamping plate 62 is provided with a press-fitting cylinder 63 through a fixing plate 66, the press-fitting cylinder 63 is connected with a reverse-pulling cylinder 65 arranged above the auxiliary water tank side through a connecting plate 64, the cylinder shaft of the reverse-pulling cylinder 65 is connected with a metal probe through a press-fitting head 651, and the metal probe is provided with a sealing ring for sealing an inflation inlet.
The press-fitting cylinder 63 moves to drive the reverse-pulling cylinder 65 to reciprocate along the position of the auxiliary water tank, so that the metal probe on the reverse-pulling cylinder is driven to reciprocate in the inflation inlet of the auxiliary water tank 7, and the sealing ring on the metal probe seals the inflation inlet. In order to detect whether the movement and press fitting are in place, a displacement sensor (not shown in the figure) is arranged on the connecting plate.
In order to better detect the pressure in the auxiliary water tank 7, a pressure sensor 71 for detecting the pressure is further arranged on the metal probe. The pressure sensor 71 is in communication with the interior of the metal probe.
In order to detect the negative pressure of the auxiliary water tank 7, a negative pressure detection assembly is further arranged on the bottom plate 61, the negative pressure detection assembly is composed of a control assembly 72 formed by a two-position three-way valve and a stop valve, and a vacuum generator, and the stop valve is electrically connected with the pressure sensor 71.
The cylinder shaft movement direction of the press-fitting cylinder and the cylinder shaft movement direction of the back-pull cylinder are arranged oppositely, and when the cylinder shaft of the press-fitting cylinder does extension movement, the back-pull cylinder is far away from the auxiliary water tank.
Because the auxiliary water tank is provided with a plurality of pipe orifices, the plurality of pipe orifices need to be blocked for the accuracy of the test, the metal probe press-fitting mechanism also comprises blocking air cylinders 67, 68 and 69 for blocking the pipe orifices of the auxiliary water tank, and the blocking air cylinders are distributed at different positions because the pipe orifices are at different positions.
The utility model also discloses a detection method of the auxiliary water tank leakage detection device, which comprises the following steps,
s1, placing the auxiliary water tank 7 to be detected on the clamping plate 62, plugging the pipe orifice of the auxiliary water tank through a plugging cylinder, and only reserving a detection charging port;
s2, before detection, the inflation inlet is in a state of being communicated with the outside, the cylinder shaft of the press-fitting cylinder 63 is in an extending state, namely the back-pull cylinder 65 is far away from the auxiliary water tank; the press-fitting cylinder 63 works to drive the backward-pulling cylinder 65 to move preliminarily to the position of the auxiliary water tank, and the movement of the backward-pulling cylinder is detected and positioned through a displacement sensor;
s3, the back-pull cylinder works to drive the metal probe to move inwards towards the auxiliary water tank along the inflating opening of the auxiliary water tank for micro adjustment until the inflating opening is completely sealed by a sealing ring on the metal probe;
s4, detecting the positive pressure leakage amount in the auxiliary water tank 7 through the air tightness detection component on the upper part of the frame; based on the positive pressure leakage quantity detection method for ripe and conventional test, just not the utility model discloses a key place, the event is no longer repeated here.
S5, carrying out negative pressure leakage test detection on the auxiliary water tank 7 through the negative pressure detection assembly on the bottom plate; specifically, the negative pressure detection of S5 includes the following steps:
s51, in the inflation stage, the two-position three-way valve on the bottom plate is opened, the vacuum generator generates negative pressure, and therefore the negative pressure is formed in the sealed pipe of the metal probe until the set value required by the negative pressure is reached;
s52, in the pressure maintaining stage, the stop valve is controlled to be closed through the two-position three-way valve on the bottom plate, and the air in the pipe at the metal probe is stably fused after a period of time,
s53, in the measuring stage, because the pressure sensor 71 is indirectly communicated with the auxiliary water tank, the pressure in the product can be measured in real time through the pressure sensor, and the leakage is judged through the pressure difference between the beginning and the end of the measurement.
And S6, after the detection is finished, the reverse pulling cylinder and the press mounting cylinder return respectively, and the leakage test of the whole auxiliary water tank is completed.
Meanwhile, the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. Auxiliary water tank reveals detection device, its characterized in that: the metal probe press-fitting mechanism comprises a bottom plate, a clamping plate arranged on the bottom plate and used for placing an auxiliary water tank, a press-fitting cylinder is arranged on the side portion of the clamping plate and connected with a back-pull cylinder arranged above the side of the auxiliary water tank through a connecting plate, and the press-fitting cylinder moves to drive the back-pull cylinder to reciprocate along the position of the auxiliary water tank.
2. The auxiliary tank leakage detecting device according to claim 1, wherein: the metal probe is connected to a cylinder shaft of the back-pull cylinder, a sealing ring is arranged on the metal probe, and the back-pull cylinder moves to drive the metal probe to reciprocate along the auxiliary water tank.
3. The auxiliary tank leakage detecting device according to claim 2, wherein: and the metal probe is also provided with a pressure sensor for detecting pressure.
4. The auxiliary tank leakage detecting device according to claim 1, wherein: and a displacement sensor is arranged on the connecting plate.
5. The auxiliary tank leakage detecting device according to claim 3, wherein: the bottom plate is also provided with a negative pressure detection assembly, the negative pressure detection assembly consists of a two-position three-way valve, a vacuum generator and a stop valve, and the stop valve is electrically connected with the pressure sensor.
6. The auxiliary tank leakage detecting device according to claim 1, wherein: the cylinder shaft movement direction of the press-fitting cylinder and the cylinder shaft movement direction of the back-pull cylinder are arranged oppositely, and when the cylinder shaft of the press-fitting cylinder does extension movement, the back-pull cylinder is far away from the auxiliary water tank.
7. The auxiliary tank leakage detecting device according to claim 1, wherein: the air tightness detection assembly comprises a manual pressure regulating valve, an air storage tank, an electric proportional valve and a stop valve, and a two-position three-way valve is arranged between the manual pressure regulating valve and the stop valve.
8. The auxiliary tank leakage detecting device according to claim 1, wherein: the metal probe press-fitting mechanism further comprises a plugging air cylinder for plugging the orifice of the auxiliary water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061525.0U CN210571249U (en) | 2019-07-09 | 2019-07-09 | Auxiliary water tank leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061525.0U CN210571249U (en) | 2019-07-09 | 2019-07-09 | Auxiliary water tank leakage detection device |
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| Publication Number | Publication Date |
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| CN210571249U true CN210571249U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921061525.0U Active CN210571249U (en) | 2019-07-09 | 2019-07-09 | Auxiliary water tank leakage detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781691A (en) * | 2020-12-31 | 2021-05-11 | 瑞纳智能设备股份有限公司 | Meter body detection system |
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2019
- 2019-07-09 CN CN201921061525.0U patent/CN210571249U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781691A (en) * | 2020-12-31 | 2021-05-11 | 瑞纳智能设备股份有限公司 | Meter body detection system |
| CN112781691B (en) * | 2020-12-31 | 2023-08-04 | 瑞纳智能设备股份有限公司 | Meter body detecting system |
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