CN111089688B - A gas tightness detector for cooking utensils draw and penetrate pipe - Google Patents
A gas tightness detector for cooking utensils draw and penetrate pipe Download PDFInfo
- Publication number
- CN111089688B CN111089688B CN201811239788.6A CN201811239788A CN111089688B CN 111089688 B CN111089688 B CN 111089688B CN 201811239788 A CN201811239788 A CN 201811239788A CN 111089688 B CN111089688 B CN 111089688B
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- gas
- ring wall
- positioning
- injection pipe
- machine body
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- 238000010411 cooking Methods 0.000 title claims description 5
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims description 35
- 239000007924 injection Substances 0.000 claims description 35
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 230000008602 contraction Effects 0.000 claims description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 description 62
- 238000007789 sealing Methods 0.000 description 22
- 238000001514 detection method Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 3
- 239000000344 soap Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention relates to an air tightness detector for a kitchen range ejector pipe, which comprises the ejector pipe to be detected and is characterized in that: the invention also comprises a machine body, an air supply part arranged on the machine body, a positioning part, a base, a pressure sensor, a top pressing mechanism, a side pressing mechanism, a plugging part and a controller.
Description
Technical Field
The invention relates to the field of gas stove quality detection, in particular to an air tightness detector for an injection pipe of a stove.
Background
The air tightness detection is one of the most important detection contents in the gas stove detection, and determines the use safety of the gas stove. The general manufacturers only do gas tightness detection for the valve part of the gas stove, and do pilot fire detection or soap lye detection for the part behind the valve body, and the two detection methods are not only poor in accuracy and easy to misjudge, but also long in waiting time and seriously affect the production efficiency of the gas stove, so that the applicant applies a Chinese utility model patent 'gas stove complete machine gas tightness leak detection system' with the patent number of ZL201720278431.X (the publication number of CN207231727U) and discloses a gas tightness detector which is used for being connected with a gas inlet joint of a gas pipeline of the gas stove to be detected and is connected with a pressure storage tank and a gas source through a gas pipe; the plugging piece is used for plugging a fuel gas spraying hole of the nozzle; the gas tightness detection tool hole is formed in a nozzle seat of a gas stove and used for installing the plugging piece, the leak detection system is simple in structure, in detection, only the gas tightness detector is connected with the gas inlet connector, the plugging piece is inserted into the gas tightness detection tool hole to plug the gas jetting hole, open fire and soap liquid do not need to be used, operation is very convenient, and parts cannot be damaged, but the leak detection system only detects the gas tightness of the whole gas stove, the gas tightness of the gas stove injection pipe also determines the sealing degree of the gas tightness of the whole gas stove, and therefore a device specially used for detecting the gas tightness of the gas stove injection pipe is needed.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a gas tightness detector for a stove injection pipe, which is convenient to operate and high in accuracy, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: this an air tightness detector for cooking utensils are penetrated pipe that draws, including drawing the pipe that draws that awaits measuring, drawing the pipe that draws that awaits measuring is divided into constriction, mixing portion and diffusion portion, its characterized in that according to the change of cross section along the air current direction: also includes:
a body;
the air supply part is arranged on the machine body;
the positioning piece is provided with a positioning port matched with the diffusion part of the injection pipe to be detected and an air inlet for inputting air into the air supply part;
the base is arranged on the machine body and is provided with a groove for positioning the positioning piece;
the pressure sensor is arranged below the groove on the base;
the jacking mechanism is arranged on the machine body, can move up and down relative to the base and is used for jacking the positioning piece;
the lateral pressure mechanism is arranged on the machine body, can horizontally move relative to the base, comprises a plugging piece which is matched with the contraction part and an inlet section positioned at the upstream of the mixing part and is used for plugging the injection pipe to be tested; and
and the controller is arranged on the machine body and is electrically connected with the pressure sensor.
Furthermore, the positioning element comprises an inner ring wall and an outer ring wall which are arranged at an interval from inside to outside and a top wall for connecting the inner ring wall and the outer ring wall, the inner ring wall and the outer ring wall jointly form a peripheral cavity, the peripheral cavity is communicated with the external air supply part, and the outer ring wall is provided with the positioning opening communicated with the peripheral cavity. The inner ring wall and the outer ring wall of the positioning piece at intervals form an annular peripheral cavity, and the peripheral cavity is communicated with an external gas supply part, so that the space for inputting pressurized gas in the positioning piece, namely the peripheral cavity, is small, the gas tightness detection of gas pressurization of the injection pipe can be carried out through the peripheral cavity in a short time, and the consumed time is short.
In order to improve the air tightness of the peripheral cavity, the groove comprises a first inner step and a second inner step which are arranged at intervals up and down, the outer ring wall is abutted against a first wall surface above the first inner step, and the inner ring wall is abutted against a second wall surface below the second inner step.
Preferably, the top wall is provided with the gas inlet for inputting gas to the gas supply part.
For the quick periphery cavity that is full of the gas of outside air feed portion input, the roof certainly go into the gas port, and top-down gradually towards keeping away from the direction downward sloping of the ejector tube air current that awaits measuring. The inclination design of the top wall can lead the gas input by the gas supply part to be quickly guided to the whole peripheral cavity.
In order to prevent the positioning element from deflecting when arranged in the groove, the base is provided with a pressing mechanism on the periphery of the groove, the pressing mechanism comprises a supporting part which is supported on the periphery of the third wall surface above the second inner step and an outer convex part which is arranged on the other part of the outer ring wall outside the positioning opening, and the tail end of the outer convex part can abut against the supporting part.
Furthermore, the tail end of the outer convex part is provided with a hole, and a fastener penetrates through the hole and is detachably connected with the supporting part. The supporting part is connected with the outer convex part through the fastener so as to prevent the positioning piece from deflecting relative to the groove.
In order to improve the sealing of the sealing part on the contraction part and the mixing part of the injection pipe, the sealing part comprises a first sealing part and a second sealing part from upstream to downstream along the airflow direction, the shape of the first sealing part is matched with that of the contraction part, the cross section area of the inlet end of the first sealing part is equal to that of the inlet of the contraction part, the cross section area of the outlet end of the first sealing part is equal to that of the outlet of the contraction part, and the cross section area of the second sealing part is equal to that of the inlet section upstream of the mixing part. The contraction part and the mixing part of the injection pipe are simultaneously plugged through the first plugging piece and the second plugging piece, the dual plugging effect is achieved, and the accuracy of air tightness detection is improved.
Furthermore, the jacking mechanism comprises a first oil cylinder, a first die head is fixed at the lower end of a piston rod of the first oil cylinder, the first die head can move up and down relative to the machine body under the action of the first oil cylinder, and pressure can be applied to the positioning piece under the condition that the piston rod moves down.
Further, the side pressing mechanism comprises a second oil cylinder, a second die head is fixed at the right end of a piston rod of the first oil cylinder, the blocking piece is fixedly connected with the second die head and can horizontally move left and right relative to the machine body under the action of the second oil cylinder, and the blocking piece can block the injection pipe to be detected in the state that the piston rod moves right.
In order to be more convenient for the staff that the gas tightness detected more directly to see out the side and decide the result, the controller sets up the base in the right side of recess, the right side of controller still is provided with the display that can show the numerical value of drawing intraductal gas pressure that awaits measuring that gathers from the controller.
Compared with the prior art, the invention has the advantages that during testing, the positioning piece is arranged in the groove of the base, then the diffusion part of the injection pipe to be tested is positioned on the positioning port of the positioning piece, when the side pressing mechanism moves rightwards and the blocking piece blocks the contraction part and the mixing part of the injection pipe to be tested, the top pressing mechanism is moved downwards to fix the positioning piece, gas is input to the positioning piece through the external gas supply part, the pressure in the injection pipe to be tested and the positioning piece is collected by the pressure sensor and then transmitted to the controller, and the controller judges whether the pressure of the injection pipe to be tested is in the set normal range, so that whether the injection pipe to be tested is qualified or not is judged.
Drawings
FIG. 1 is a schematic structural diagram of an overall airtightness detector according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the first plugging member in FIG. 1 in a state where the first plugging member does not plug the contraction portion of the injection pipe to be tested;
fig. 3 is a cross-sectional view of the first plugging member in fig. 1 in a state of plugging a contraction portion of the injection pipe to be tested;
FIG. 4 is a schematic view of a positioning member according to an embodiment of the present invention;
FIG. 5 is a schematic view of another angle of the positioning member according to the embodiment of the present invention;
fig. 6 is a schematic illustration of a block piece affixed to a second die in accordance with an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in FIGS. 1 to 6, the preferred embodiment of the present invention is shown. The gas tightness detector for the stove ejector tube in the embodiment comprises an ejector tube 1 to be detected, wherein the ejector tube 1 to be detected is divided into a contraction part 11, a mixing part 12 and a diffusion part 13 according to the change of the cross section along the airflow direction, the gas tightness detector further comprises a machine body 2, a gas supply part arranged on the machine body 2, a positioning part 310 with a positioning port 310 matched with the diffusion part 13 of the ejector tube 1 to be detected and a gas inlet 320 for inputting gas into the gas supply part, a base 4 arranged on the machine body 2 and provided with a groove 41 for positioning the positioning part 3, a pressure sensor arranged on the base 4 below the groove 41, a jacking mechanism 5 arranged on the machine body 2 and capable of moving up and down relative to the base 4, a lateral pressure mechanism 6 arranged on the machine body 2 and capable of moving horizontally relative to the base 4, wherein the lateral pressure mechanism 6 comprises a plugging part 7 matched with the contraction part 11 and an inlet port 711 positioned at the upstream of the mixing part 12, And a controller 8 disposed on the body 2 and electrically connected to the pressure sensor. In this embodiment, the positioning element 3 includes an inner annular wall 31 and an outer annular wall 32 arranged at an interval between the inner and outer walls, and a top wall 33 connecting the inner and outer annular walls 31 and 32, the inner annular wall 31 encloses a central cavity 311, the inner annular wall 31 and the outer annular wall 32 together enclose a peripheral cavity 321, the peripheral cavity 321 is communicated with an external gas supply part (not shown in the figure), the outer annular wall 32 has a positioning port 310 communicated with the peripheral cavity 321, because the inner annular wall 31 and the outer annular wall 32 arranged at an interval between the inner and outer walls of the positioning element 3 form an annular peripheral cavity 321, and the peripheral cavity 321 is communicated with the external gas supply part, a space for inputting pressurized gas in the positioning element 3, i.e., the peripheral cavity 321, is small, so that gas tightness detection of gas pressurization on the ejector pipe can be performed through the peripheral cavity 321 in a short time, and the consumed time is short. In order to further improve the air tightness of the peripheral cavity 321, the groove 41 includes a first inner step 411 and a second inner step 412 spaced up and down, the outer annular wall 32 abuts against the first wall surface 4111 above the first inner step 411, and the inner annular wall 31 abuts against the second wall surface 4121 below the second inner step 412. Wherein, the top wall 33 of the positioning member 3 is further provided with an air inlet 320 for inputting air into the air supply part, for the purpose that the air input from the external air supply part is quickly filled in the peripheral cavity 321, the top wall 33 gradually inclines downwards from the air inlet 320 to the direction far away from the air flow of the injection pipe 1 to be detected, and the inclination design of the top wall 33 can lead the air input from the air supply part to be quickly guided to the whole peripheral cavity 321.
In order to prevent the positioning element 3 from deflecting in the groove 41, the base 4 is provided with a pressing mechanism on the periphery of the groove 41, the pressing mechanism comprises a supporting portion 101 on the periphery of the third wall surface supported on the second inner step 412 and an outer convex portion 102 arranged on the other part of the outer annular wall 32 outside the positioning opening 310, the tail end of the outer convex portion 102 can abut against the supporting portion 101, wherein a hole 1021 is formed in the tail end of the outer convex portion 102, a fastening element penetrates through the hole 1021 to be detachably connected with the supporting portion 101, and the supporting portion 101 and the outer convex portion 102 are connected through the fastening element to prevent the positioning element 3 from deflecting relative to the groove 41. In addition, in order to improve the sealing effect of the sealing piece 7 on the contraction part 11 and the mixing part 12 of the injection pipe, the sealing piece 7 comprises a first sealing piece 71 and a second sealing piece 72 from upstream to downstream along the airflow direction, the shape of the first sealing piece 71 is adapted to the shape of the contraction part 11, the cross-sectional area of the inlet end 711 of the first sealing piece 71 is equal to that of the inlet 111 of the contraction part 11, the cross-sectional area of the outlet end 712 of the first sealing piece 71 is equal to that of the outlet 112 of the contraction part 11, and the cross-sectional area of the second sealing piece 72 is equal to that of the inlet section 121 at the upstream of the mixing part 12, so that the contraction part 11 and the mixing part 12 of the injection pipe are simultaneously sealed by the first sealing piece 71 and the second sealing piece 72, the double sealing effect is achieved, and the accuracy of air tightness detection is improved.
The pressing mechanism 5 of the present embodiment includes a first oil cylinder 51, a first die head 52 is fixed at the lower end of a piston rod of the first oil cylinder 51, the first die head 52 can move up and down relative to the machine body 2 under the action of the first oil cylinder 51, and can apply pressure on the positioning element 3 in the state that the piston rod moves down, so that the positioning element 3 is positioned in the groove 41 of the base 4; the side pressing mechanism 6 comprises a second oil cylinder 61, a second die head 62 is fixed at the right end of a piston rod of the second oil cylinder 61, the blocking piece 7 is fixedly connected with the second die head 62 and can horizontally move left and right relative to the machine body 2 under the action of the second oil cylinder 61, and the blocking piece can block the injection pipe 1 to be detected under the condition that the piston rod moves right.
Finally, for the staff that the gas tightness detected of being convenient for more directly sees the side and decides the result, controller 8 sets up in base 4 in the right side of recess 41, and controller 8's right side still is provided with the display 9 that can show the numerical value of drawing the intraductal gas pressure that awaits measuring that gathers from controller 8.
When the injection pipe testing device is used for testing, the positioning part 3 is arranged in the groove 41 of the base 4, the supporting part 101 is connected with the outer convex part 102 by using a fastening piece to prevent the positioning part 3 from deflecting relative to the groove 41, then the diffusion part 13 of the injection pipe 1 to be tested is positioned on the positioning port 310 of the positioning part 3, the lateral pressure mechanism 6 is moved rightwards, the first blocking part 71 and the second blocking part 72 simultaneously block the contraction part 11 and the mixing part 12 of the injection pipe 1 to be tested, the jacking mechanism 5 is moved downwards to fix the positioning part 3, gas is input to the positioning part 3 through the external gas supply part, the pressure in the injection pipe 1 to be tested and the positioning part 3 is collected by the pressure sensor and then is transmitted to the controller 8, the value of the gas pressure in the injection pipe 1 to be tested, which is collected by the controller 8, is displayed by the display 9, so that whether the gas tightness of the injection pipe 1 to be tested is in a set normal range is judged, therefore, whether the injection pipe 1 to be detected is qualified or not is judged, and the method has the characteristics of accurate detection and simple structure.
Claims (7)
1. The utility model provides an air tightness detector for cooking utensils are penetrated and are penetrated pipe, draws including waiting to detect and penetrate pipe (1), it is divided into constriction (11), mixing portion (12) and diffusion portion (13), its characterized in that to await measuring to draw pipe (1) according to the change of cross section along the air current direction: also includes:
a body (2);
an air supply part arranged on the machine body (2);
the positioning piece (3) is provided with a positioning port (310) matched with the diffusion part (13) of the injection pipe (1) to be detected and an air inlet (320) for inputting air into the air supply part;
the base (4) is arranged on the machine body (2) and is provided with a groove (41) for positioning the positioning piece (3);
the pressure sensor is arranged below the groove (41) of the base (4);
the jacking mechanism (5) is arranged on the machine body (2), can move up and down relative to the base (4) and is used for jacking the positioning piece (3);
the lateral pressure mechanism (6) is arranged on the machine body (2) and can horizontally move relative to the base (4), and comprises a plugging piece (7) which is matched with the contraction part (11) and an inlet section (121) positioned at the upstream of the mixing part (12) and is used for plugging the injection pipe (1) to be tested; and
the controller (8) is arranged on the machine body (2) and electrically connected with the pressure sensor, the positioning element (3) comprises an inner ring wall (31) and an outer ring wall (32) which are arranged at intervals inside and outside and a top wall (33) connecting the inner ring wall and the outer ring wall (32), the inner ring wall (31) encloses a central cavity (311), the inner ring wall (31) and the outer ring wall (32) enclose a peripheral cavity (321), the peripheral cavity (321) is communicated with the external air supply part, the outer ring wall (32) is provided with the positioning opening (310) communicated with the peripheral cavity (321), the groove (41) comprises a first inner step (411) and a second inner step (412) which are arranged at intervals up and down, the outer ring wall (32) abuts against a first wall surface (4111) above the first inner step (411), and the inner ring wall (31) abuts against a second wall surface (4121) below the second inner step (412), the top wall (33) is provided with a gas inlet (320) for inputting gas into the gas supply part, and the top wall (33) gradually inclines downwards in the direction away from the gas flow of the injection pipe (1) to be detected from the gas inlet (320) from top to bottom.
2. The airtightness detector for the stove ejector tube according to claim 1, is characterized in that: the base (4) is provided with a pressing and holding mechanism on the periphery of the groove (41), the pressing and holding mechanism comprises a supporting part (101) which is supported on the periphery of a third wall surface above the second inner step (412) and an outer convex part (102) which is arranged on the other part of the outer ring wall (32) outside the positioning opening (310), and the tail end of the outer convex part (102) can abut against the supporting part (101).
3. The airtightness detector for the cooking utensil injection pipe according to claim 2, is characterized in that: the tail end of the outer convex part (102) is provided with a hole (1021), and a fastener penetrates through the hole (1021) and is detachably connected with the supporting part (101).
4. The air tightness detector for the kitchen range injection pipe according to any one of claims 1 to 3, characterized in that: the closure (7) comprises, from upstream to downstream in the direction of the gas flow, a first closure (71) and a second closure (72), the shape of the first closure (71) being adapted to the shape of the constriction (11), and the cross-sectional area of the inlet end (711) of the first closure (71) being equal to the cross-sectional area of the inlet (111) of the constriction (11), the cross-sectional area of the outlet end (712) of the first closure (71) being equal to the cross-sectional area of the outlet (112) of the constriction (11), and the cross-sectional area of the second closure (72) being equal to the cross-sectional area of the inlet section (121) upstream of the mixing section (12).
5. The airtightness detector for the stove ejector tube according to claim 4, is characterized in that: the jacking mechanism (5) comprises a first oil cylinder (51), a first die head (52) is fixed at the lower end of a piston rod of the first oil cylinder (51), the first die head (52) can move up and down relative to the machine body (2) under the action of the first oil cylinder (51), and can apply pressure on the positioning piece (3) in the state that the piston rod moves down.
6. The airtightness detector for the stove ejector tube according to claim 5, is characterized in that: the lateral pressing mechanism (6) comprises a second oil cylinder (61), a second die head (62) is fixed at the right end of a piston rod of the second oil cylinder (61), the blocking piece (7) is fixedly connected with the second die head (62), can horizontally move left and right relative to the machine body (2) under the action of the second oil cylinder (61), and can block the injection pipe (1) to be detected in the state that the piston rod moves right.
7. The airtightness detector for the stove ejector tube according to claim 6, is characterized in that: controller (8) set up base (4) in the right side of recess (41), the right side of controller (8) still is provided with display (9) that can show the numerical value that draws the injection pipe (1) interior gas pressure that awaits measuring of gathering from controller (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811239788.6A CN111089688B (en) | 2018-10-24 | 2018-10-24 | A gas tightness detector for cooking utensils draw and penetrate pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811239788.6A CN111089688B (en) | 2018-10-24 | 2018-10-24 | A gas tightness detector for cooking utensils draw and penetrate pipe |
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| Publication Number | Publication Date |
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| CN111089688A CN111089688A (en) | 2020-05-01 |
| CN111089688B true CN111089688B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811239788.6A Active CN111089688B (en) | 2018-10-24 | 2018-10-24 | A gas tightness detector for cooking utensils draw and penetrate pipe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113108994A (en) * | 2021-04-07 | 2021-07-13 | 宁波新松机器人科技有限公司 | Hydraulic motor leakproofness detection device |
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| CN111089688A (en) | 2020-05-01 |
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Denomination of invention: A Gas Tightness Tester for the Ejection Tube of a Stove Effective date of registration: 20231102 Granted publication date: 20211112 Pledgee: Bank of China Limited Ningbo Hangzhou Bay New Area sub branch Pledgor: NINGBO FOTILE KITCHEN WARE Co.,Ltd. Registration number: Y2023980063518 |