CN215492305U - Gas tightness detection device of oil gas recovery detector - Google Patents
Gas tightness detection device of oil gas recovery detector Download PDFInfo
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- CN215492305U CN215492305U CN202122240736.4U CN202122240736U CN215492305U CN 215492305 U CN215492305 U CN 215492305U CN 202122240736 U CN202122240736 U CN 202122240736U CN 215492305 U CN215492305 U CN 215492305U
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- gas recovery
- recovery detector
- piston rod
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Abstract
The utility model discloses an air tightness detection device of an oil gas recovery detector, which comprises: the cylinder body of the cylinder is divided into a first chamber and a second chamber through a piston, wherein a piston rod penetrates out of the second chamber, and the first chamber is communicated with a main air path of the oil gas recovery detector through a first pipeline; the piston rod driving part is used for driving the piston rod to move relative to the cylinder body; the pressure sensor is communicated with a main gas path of the oil gas recovery detector and is used for detecting the pressure of the main gas path of the oil gas recovery detector; and the control unit controls the piston rod driving part to move the piston rod according to the detection pressure of the pressure sensor until the pressure sensor reaches a set pressure value. The utility model solves the problems of complex operation and inaccurate pressure regulation caused by manual regulation of the self air tightness detection of the existing oil gas recovery detector.
Description
Technical Field
The utility model relates to the field of oil gas recovery detection, in particular to an air tightness detection device of an oil gas recovery detector.
Background
The gas stations can generate volatile oil gas in daily operation, which is harmful to human health and brings potential safety hazard, so that the existing gas stations are all provided with oil gas recovery systems.
The oil gas recovery detector is used for detecting whether an oil gas recovery system of a gas station meets the requirements of national standards. Therefore, strict requirements are put on the air tightness of the oil gas recovery detector, and the national standard GB20952-2020 requires that a vacuum pressure of 1245Pa is generated to detect the air tightness of the detector. At present, most of the gas tightness detection of the oil gas recovery detector is realized by manually adjusting pressure, the operation is complicated, and meanwhile, the specified vacuum pressure is difficult to accurately adjust through manual pressure adjustment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the self air tightness detection of the existing oil gas recovery detector is complicated in operation and inaccurate in pressure regulation caused by manual regulation.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model provides an air tightness detection device of vapor recovery system detector, includes: the cylinder body of the cylinder is divided into a first chamber and a second chamber through a piston, wherein a piston rod penetrates out of the second chamber, and the first chamber is communicated with a main air path of the oil gas recovery detector through a first pipeline; the piston rod driving part is used for driving the piston rod to move relative to the cylinder body; the pressure sensor is communicated with a main gas path of the oil gas recovery detector and is used for detecting the pressure of the main gas path of the oil gas recovery detector; a control unit for controlling the piston rod drive part to move the piston rod according to the detection pressure of the pressure sensor until the pressure sensor reaches a set pressure value
In some embodiments of the present invention, the piston rod driving part includes: the sliding block is connected to the sliding way in a sliding mode and fixedly connected with the piston rod; and the driving motor is used for driving the sliding block to move along the slide way.
In some embodiments of the present invention, the driving motor and the slider are connected by a screw-nut mechanism, wherein an output shaft of the driving motor is connected to a screw of the screw-nut mechanism, and the slider is connected to a nut of the screw-nut mechanism or is integrally formed with the nut of the screw-nut mechanism.
In some embodiments of the present invention, the driving motor is a linear motor, and the linear motor drives the sliding block to move linearly along the sliding rail.
In some embodiments of the present invention, the air tightness detecting device of the oil gas recovery detector is located inside a housing of the oil gas recovery detector.
In some embodiments of the present invention, the second chamber of the cylinder is communicated with the space inside the housing of the oil gas recovery detector.
In some embodiments of the present invention, the main gas path of the oil gas recovery detector includes a first main gas path located inside a housing of the oil gas recovery detector and a second main gas path located outside the housing of the oil gas recovery detector, the first main gas path and the second main gas path are communicated through a joint, and the first chamber of the cylinder is communicated with the first main gas path through a first pipeline.
In some embodiments of the utility model, the second main gas path includes a hose and an adapter at an end of the hose, and the airtightness detection apparatus further includes a leak detection rod for sealing the adapter.
Compared with the prior art, the technical scheme of the utility model has the following technical effects:
when the air tightness detection device provided by the utility model is used for carrying out air tightness detection on a main air path of an oil gas recovery detector, the control unit controls the piston rod driving part according to the detection value of the pressure sensor to enable the piston rod to move towards the direction away from the cylinder body of the cylinder, so that the volume of the first cavity is increased, and the air pressure is reduced; and determining whether the main gas path of the oil gas recovery detector leaks air or not according to the pressure value detected by the pressure sensor after a set time until the pressure value of the main gas path meets the requirement. The whole detection process adopts automatic control, does not need manual operation of workers, and realizes intelligent airtightness detection. And the control unit controls the action of the piston rod driving part according to the feedback value of the pressure sensor, and can accurately adjust the vacuum pressure value specified by the national standard.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the utility model, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a specific embodiment of an air tightness detection device of an oil gas recovery detector provided by the utility model.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it 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; 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.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 shows a specific embodiment of an air tightness detection device (hereinafter referred to as an air tightness detection device) of an oil gas recovery detector, according to the present invention, the air tightness detection device is used for performing air tightness detection on a main gas path 10 of the oil gas recovery detector 100, and the air tightness detection is realized by sealing an external joint of the main gas path 10 and then performing vacuum pumping.
The air tightness detection device comprises an air cylinder 20 communicated with a main air path 10 of the oil gas recovery detector 100, a piston rod driving part 30 driving a piston rod 21 of the air cylinder 20 to move, a pressure sensor 40 detecting the pressure of the main air path 10 of the oil gas recovery detector 100 and a control unit 50, wherein the control unit 50 controls the piston rod driving part 30 to enable the piston rod 21 to move according to the detection pressure of the pressure sensor 40 until the pressure sensor reaches a set pressure value. The cylinder 20 is divided into a first chamber 20a and a second chamber 20b by a piston 22, the piston rod 21 penetrates out of the second chamber 20b, and the first chamber 20a is communicated with the main air passage 10 of the oil and gas recovery detector 100 through a first pipeline 60.
When the air tightness detection device is used for detecting the air tightness of the main air path 10 of the oil gas recovery detector 100, the pressure of the main air path 10 of the oil gas recovery detector 100 in an initial state is 1 atmospheric pressure; the control unit 50 controls the piston rod driving unit 30 to move the piston rod 21 in a direction away from the cylinder body of the cylinder 20 based on the detection value of the pressure sensor 40, so that the volume of the first chamber 20a is increased and the air pressure is decreased; and controlling the piston rod driving part 30 to stop until the pressure sensor 40 detects that the pressure value of the main air path 10 of the oil gas recovery detector 100 reaches 1245Pa vacuum pressure required by the national standard GB20952-2020, keeping the piston rod 21 at the current position, and determining whether the main air path 10 of the oil gas recovery detector 100 leaks air or not according to the pressure value detected by the pressure sensor 40 after a set time. If the vacuum pressure value is reduced, it is determined that the main gas path 10 of the oil gas recovery detector 100 has a problem of airtightness. The whole detection process of the air tightness detection device adopts automatic control, manual operation of workers is not needed, the control unit 50 controls the action of the piston rod driving part 30 according to the feedback value of the pressure sensor 40, the vacuum pressure value specified by the national standard can be accurately adjusted, and intelligent air tightness detection is realized.
In particular, the implementation of the piston rod drive 30 is not exclusive. In one embodiment, the method comprises the following steps: the sliding device comprises a sliding rail 31, a sliding block 32 connected to the sliding rail 31 in a sliding mode, and a driving motor 33 used for driving the sliding block 32 to move along the sliding rail 31, wherein the sliding block 32 is fixedly connected with the piston rod 21. The slider 32 can move linearly along the slide rail 31 by controlling the driving motor 33, and then the piston rod 21 is driven to move linearly.
Specifically, the driving motor 33 drives the slider 32 in a non-exclusive manner, and in one specific embodiment, as shown in fig. 1, the driving motor 33 and the slider 32 are connected by a screw-nut mechanism, wherein an output shaft of the driving motor 33 is connected to a screw 34 of the screw-nut mechanism, and the slider 32 is connected to a nut 35 of the screw-nut mechanism or is integrally formed with the nut 35. More specifically, the slide 31 is formed by a square base and a rectangular groove formed on the upper surface of the square base, and the slide 32 is formed in a square block shape and slidably connected in the rectangular groove. An internal thread hole is formed in the sliding block 32 and is connected to the lead screw 34 in a threaded mode, and when the lead screw 34 rotates under the driving of the driving motor 33, the sliding block 32 moves linearly along the slide rail 31.
In another embodiment, the driving motor 33 is a linear motor, and the linear motor drives the sliding block 32 to move linearly along the sliding rail 31. More specifically, the slide 31 is formed by a square base and a rectangular groove formed on the upper surface of the square base, and the slide 32 is formed in a square block shape and slidably connected in the rectangular groove.
Specifically, the air tightness detecting device of the oil gas recovery detector 100 is located inside the casing 100a of the oil gas recovery detector 100, so that the whole oil gas recovery detector 100 is more portable. Meanwhile, the connecting pipeline between the air tightness detection device and the main gas circuit 10 of the oil gas recovery detector 100 is simpler, and the problem of increased leakage risk caused by the complicated connecting pipeline is avoided.
Specifically, in one embodiment, the pressure sensor 40 is integrated on a main circuit board 80 of the oil and gas recovery detecting instrument 100 and is communicated with the main air passage 10 through a second pipeline 90, the main circuit board is located inside a casing 100a of the oil and gas recovery detecting instrument 100, and the driving motor 33 is connected with the control unit 50 through the main circuit board 80. The control unit 50 is located outside the casing 100a of the oil gas recovery detector 100, and includes a central controller and a display, the display displays the pressure value of the main air path 10, and the central controller is configured to receive the pressure detection value fed back by the main circuit board 80 and send a control instruction to the main circuit board 80.
The second chamber 20b of the cylinder 20 is communicated with the inner space of the housing 100a of the oil gas recovery detector 100, that is, the air pressure of the second chamber 20b of the cylinder 20 is the same as the air pressure of the inner space of the housing 100a of the oil gas recovery detector 100, so that the piston rod 21 can move only by a small pushing force.
The main gas path 10 of the oil gas recovery detector 100 includes a first main gas path 10a located inside the casing 100a of the oil gas recovery detector 100 and a second main gas path 10b located outside the casing 100a of the oil gas recovery detector 100, the first main gas path 10a is communicated with the second main gas path 10b through a joint, and the first chamber 20a of the cylinder 20 is communicated with the first main gas path 10a through a first pipeline 60. The cylinder 20 is communicated with the first main gas circuit 10a inside the casing 100a of the oil gas recovery detector 100, so that the number of joints connecting the gas circuit with the casing 100a of the oil gas recovery detector can be reduced, and leakage points are reduced.
The second main air passage 10b includes a hose 10b1 and an adapter 10b2 at an end of the hose 10b1, and the airtightness detection apparatus further includes a leak detection rod 70 for sealing the adapter 10b 2. When the airtightness is to be detected, the leak detection rod 70 is inserted into the adapter 10b2, so that the main gas passage 10 is sealed as a whole, and the airtightness of the main gas passage 10 is detected by evacuating the airtightness detection device.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the utility model.
Claims (8)
1. The utility model provides an air tightness detection device of vapor recovery system detector which characterized in that includes:
the cylinder body of the cylinder is divided into a first chamber and a second chamber through a piston, wherein a piston rod penetrates out of the second chamber, and the first chamber is communicated with a main air path of the oil gas recovery detector through a first pipeline;
the piston rod driving part is used for driving the piston rod to move relative to the cylinder body;
the pressure sensor is communicated with a main gas path of the oil gas recovery detector and is used for detecting the pressure of the main gas path of the oil gas recovery detector;
and the control unit controls the piston rod driving part to move the piston rod according to the detection pressure of the pressure sensor until the pressure sensor reaches a set pressure value.
2. The airtightness detection apparatus according to claim 1, wherein the piston rod drive unit includes:
the sliding block is connected to the sliding way in a sliding mode and fixedly connected with the piston rod;
and the driving motor is used for driving the sliding block to move along the slide way.
3. The airtightness detection apparatus according to claim 2, wherein the driving motor is connected to the slider through a screw-nut mechanism, an output shaft of the driving motor is connected to a screw of the screw-nut mechanism, and the slider is connected to a nut of the screw-nut mechanism or is integrally formed with the nut of the screw-nut mechanism.
4. The airtightness detection device of the oil-gas recovery detector according to claim 2, wherein the driving motor is a linear motor, and the linear motor drives the slider to move linearly along the slide way.
5. The air tightness detection device of the oil gas recovery detector according to claim 1, wherein the air tightness detection device of the oil gas recovery detector is located inside a housing of the oil gas recovery detector.
6. The airtightness detection apparatus according to claim 5, wherein the second chamber of the cylinder is in communication with a space inside a housing of the oil gas recovery detector.
7. The airtightness detection device of the oil-gas recovery detector according to claim 1, wherein the main gas path of the oil-gas recovery detector includes a first main gas path located inside a housing of the oil-gas recovery detector and a second main gas path located outside the housing of the oil-gas recovery detector, the first main gas path and the second main gas path are communicated through a joint, and the first chamber of the cylinder is communicated with the first main gas path through a first pipeline.
8. The air tightness detection device of the oil and gas recovery detector of claim 7, wherein the second main air path comprises a hose and an adapter at the end of the hose, and the air tightness detection device further comprises a leak detection rod for sealing the adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122240736.4U CN215492305U (en) | 2021-09-16 | 2021-09-16 | Gas tightness detection device of oil gas recovery detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122240736.4U CN215492305U (en) | 2021-09-16 | 2021-09-16 | Gas tightness detection device of oil gas recovery detector |
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| Publication Number | Publication Date |
|---|---|
| CN215492305U true CN215492305U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122240736.4U Active CN215492305U (en) | 2021-09-16 | 2021-09-16 | Gas tightness detection device of oil gas recovery detector |
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| CN (1) | CN215492305U (en) |
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2021
- 2021-09-16 CN CN202122240736.4U patent/CN215492305U/en active Active
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