CN218470064U - Piston type differential pressure gauge capable of automatically alarming - Google Patents
Piston type differential pressure gauge capable of automatically alarming Download PDFInfo
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- CN218470064U CN218470064U CN202222362300.7U CN202222362300U CN218470064U CN 218470064 U CN218470064 U CN 218470064U CN 202222362300 U CN202222362300 U CN 202222362300U CN 218470064 U CN218470064 U CN 218470064U
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- differential pressure
- pressure gauge
- sliding plug
- magnetic sensor
- piston
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Abstract
The utility model relates to a differential pressure gauge, a piston differential pressure gauge that can automatic alarm. The utility model discloses a realize like this, the sliding plug formula differential pressure gauge that can remind automatically, including sliding plug formula differential pressure gauge, sliding plug formula differential pressure agent comprises glass pipe, sliding plug, pressure spring, the sliding plug is installed at glass intraductally, and glass manages's both ends respectively set up a low pressure intake pipe and high-pressure intake pipe, its characterized in that: the sliding plug type differential pressure gauge also comprises a permanent magnet and a magnetic sensor; wherein the permanent magnet is arranged at the top end of the piston in the differential pressure gauge; the magnetic sensor is arranged on the reading position of the glass tube, where the filter element needs to be replaced, according to the detection requirement. The beneficial effects are that: when the filter element of the filter is blocked, the piston moves towards the low-pressure end in the glass tube to push the permanent electromagnet to move towards the reed pipe. When the permanent magnet reaches the position of the magnetic sensor, the magnetic sensor is conducted under the action of magnetism, and the alarm circuit can be driven to work.
Description
Technical Field
The utility model relates to a differential pressure gauge, especially a piston differential pressure gauge that can automatic alarm.
Background
In a storage and transportation system for light oil such as gasoline, diesel oil, aviation kerosene and the like, the whole oil path is blocked due to the blockage of a filter element of an oil filter or an oil-water separator. A differential pressure gauge is usually used to observe whether the oil is blocked in the oil circuit; the differential pressure gauge is usually connected in parallel at both ends of the filter, and can remind an operator of the need of replacing the filter element when the differential pressure changes.
The most typical example is that in gasoline, diesel oil and aviation kerosene fuelling vehicles, a filter is arranged at the rear end of a fuelling gun, and a differential pressure gauge is adopted to be matched with the filter for warning of oil path blockage phenomenon. In the prior art, the differential pressure gauge comprises a shell, a glass tube, a piston, a pressure spring and the like, when the pressure difference between an inlet and an outlet of the filter exceeds a certain value, inlet oil pushes the piston to move towards the direction of a liquid outlet, and scales are marked on the glass tube. When the piston moves a distance exceeding a certain number, it indicates that the filter cartridge has a useful life that needs to be replaced.
The technical scheme has the following defects: the automatic reminding (alarming) cannot be realized by manual visual monitoring.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a piston differential pressure gauge that can automatic alarm.
The utility model discloses a realize like this, a piston differential pressure gauge that can automatic alarm, including the sliding plug formula differential pressure gauge, the sliding plug formula differential pressure agent comprises glass pipe, sliding plug, pressure spring, the sliding plug is installed at glass intraductally, and the both ends of glass pipe respectively set up a low pressure intake pipe and high-pressure intake pipe, its characterized in that: the sliding plug type differential pressure gauge also comprises a permanent magnet and a magnetic sensor; wherein the permanent magnet is arranged at the top end of the piston in the differential pressure gauge; the magnetic sensor is arranged on the reading position of the glass tube, where the filter element needs to be replaced, according to the detection requirement.
The magnetic-sensing sensor is a reed switch sensor; or a hall sensor, also known as a hall switch.
The beneficial effects of the utility model are that: when the filter element of the filter is blocked, the piston moves towards the low-pressure end in the glass tube to push the permanent electromagnet to move towards the reed pipe. When the permanent magnet reaches the position of the magnetic sensor, the magnetic sensor is conducted under the action of magnetism, and the alarm circuit can be driven to work.
Drawings
FIG. 1: one of the working principles of the piston type differential pressure gauge capable of automatically alarming is provided;
FIG. 2: the utility model relates to a piston type differential pressure gauge which can automatically alarm.
Detailed Description
Referring to fig. 2, fig. 2 shows an embodiment of a piston type differential pressure gauge capable of automatically alarming. The pressure difference meter with the automatic reminding function is a sliding plug type pressure difference meter and is composed of a glass tube 1, a sliding plug 2, a pressure spring 3, a magnetic sensor 4 and a permanent magnet 5, wherein the sliding plug 2 is installed in the glass tube 1, two ends of the glass tube 1 are respectively provided with a low-pressure air inlet tube 11 and a high-pressure air inlet tube 12, and the sliding plug 1 moves left and right along with the change of the pressure difference at the two ends of the glass tube 1. The sliding plug type differential pressure gauge also comprises a magnetic sensor 4 and a permanent magnet 5; wherein, the permanent magnet 5 is arranged at the top end or the tail end or the middle part of the piston 2 in the differential pressure gauge; the magnetic sensor 4 is arranged on the reading position of the glass tube 1, where the filter core needs to be replaced, according to the detection requirement.
When the filter element of the filter is blocked, the piston moves towards the low-pressure end 11 in the glass tube 1 to push the permanent magnet 5 to move towards the position of the magnetic sensor 4. Once the permanent magnet 5 reaches the position of the magnetic sensor 4, the magnetic sensor is conducted, and the wireless transmitter is driven to send out a signal. The signal may drive an alarm circuit, or be transmitted to a central control room or the like.
The magnetic sensor can be a reed switch, a Hall switch or other magnetic sensors.
Claims (2)
1. The utility model provides a piston differential pressure gauge that can automatic alarm, includes the piston differential pressure gauge of sliding plug formula, the piston differential pressure gauge of sliding plug comprises glass pipe (1), sliding plug (2), pressure spring (3), it is intraductal at glass to slide plug (2), and the both ends of glass pipe respectively set up a low pressure intake pipe (11) and high-pressure intake pipe (12), its characterized in that respectively: the sliding plug type differential pressure gauge also comprises a permanent magnet (5) and a magnetic sensor (4); wherein the permanent magnet (5) is arranged at the top end of the sliding plug (2) in the differential pressure gauge; the magnetic sensor (4) is arranged at the reading position of the glass tube (1) where the filter element needs to be replaced according to the detection requirement.
2. The piston type differential pressure gauge capable of automatically alarming as claimed in claim 1, wherein: the magnetic sensor (4) is a reed switch sensor; or a hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222362300.7U CN218470064U (en) | 2022-09-06 | 2022-09-06 | Piston type differential pressure gauge capable of automatically alarming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222362300.7U CN218470064U (en) | 2022-09-06 | 2022-09-06 | Piston type differential pressure gauge capable of automatically alarming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218470064U true CN218470064U (en) | 2023-02-10 |
Family
ID=85139177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222362300.7U Active CN218470064U (en) | 2022-09-06 | 2022-09-06 | Piston type differential pressure gauge capable of automatically alarming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218470064U (en) |
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2022
- 2022-09-06 CN CN202222362300.7U patent/CN218470064U/en active Active
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