CN222995302U - Density relay - Google Patents
Density relay Download PDFInfo
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- CN222995302U CN222995302U CN202421819883.4U CN202421819883U CN222995302U CN 222995302 U CN222995302 U CN 222995302U CN 202421819883 U CN202421819883 U CN 202421819883U CN 222995302 U CN222995302 U CN 222995302U
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- density relay
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Abstract
A density relay comprises a front housing connected with a shell, the shell is connected with a rear cover, the front housing is connected with window glass, the window glass is connected with a dial, a display pointer is arranged on the dial and connected with one end of a machine core, the other end of the machine core is connected with a control pointer, the machine core is connected with a temperature compensation sheet, the temperature compensation sheet is connected with a C-shaped tube, the C-shaped tube is connected with a base and is communicated with the base, a base hole is formed in the base, a gasket is arranged on the lower side of the base, a magnetic-assisted switch is arranged on the lower side of the gasket and is matched with the position of the control pointer, the structure adopts a double shaft, the front shaft is used for controlling the display pointer, the display gas density is controlled by the dial, the rear shaft of the machine core is used for controlling the control pointer, the magnetic-assisted switch is opened and closed, thus control signals and the display density are separated by 2 pointers, and the precision is higher.
Description
Technical Field
The utility model relates to the technical field of density relays, in particular to a density relay.
Background
The existing sulfur hexafluoride or mixed gas density relay adopts a magnetic-assisted switch in the interior, and the working principle is that air is introduced through an air inlet, a C-shaped pipe expands or contracts, so that a movement is driven to move, a pointer is driven to rotate through the movement, the magnetic-assisted switch is opened and closed through the pointer, and meanwhile, the pointer also displays corresponding gas density readings.
The above-mentioned structure has a problem in that the pointer rotating motion is required to turn on the magnetically assisted switch in addition to displaying the density of the corresponding gas, which may cause an error in the pointer display, and the precision is difficult to be ensured.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art and provides a density relay.
The density relay comprises a front housing, wherein the front housing is connected with a shell, the shell is connected with a rear cover, the front housing is connected with window glass, the window glass is connected with a dial, a display pointer is arranged on the dial, the display pointer is connected with one end of a machine core, the other end of the machine core is connected with a control pointer, the machine core is connected with a temperature compensation sheet, the temperature compensation sheet is connected with a C-shaped pipe, the C-shaped pipe is connected with a base and is communicated with the base, a base hole is formed in the base, a gasket is arranged on the lower side of the base, a magnetic-assistance switch is arranged on the lower side of the gasket, and the magnetic-assistance switch is matched with the position of the control pointer.
Further, a front cover sealing ring is arranged between the front cover shell and the shell.
Further, a rear cover sealing ring is arranged between the shell and the rear cover.
Further, the housing is connected with a junction box.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model adopts the double-shaft movement, the front shaft of the movement is used for controlling the display pointer to display the gas density, the rear shaft of the movement is used for controlling the control pointer to open and close the magnetic-assisted switch, thus the control signal and the display density are realized by 2 pointers separately, and the precision is higher.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
Fig. 2 is a schematic structural view of the movement of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
As shown in fig. 1-2, a density relay comprises a front housing 1, the front housing 1 is connected with a housing 7, the housing 7 is connected with a rear cover 9, the front housing 1 is connected with a window glass 2, the window glass 2 is connected with a dial 5, a display pointer 41 is arranged on the dial 5, the display pointer 41 is connected with one end of a movement 15, the other end of the movement 15 is connected with a control pointer 42, the movement 15 is connected with a temperature compensation sheet 13, the temperature compensation sheet 13 is connected with a C-shaped tube 14, the C-shaped tube 14 is connected with a base 6 and is communicated with the base 6, a base hole 16 is formed in the base 6, a gasket 12 is arranged on the lower side of the base 6, a magnetic-assistance switch 11 is arranged on the lower side of the gasket 12, and the magnetic-assistance switch 11 is matched with the position of the control pointer 42.
A front cover sealing ring 3 is arranged between the front housing 1 and the housing 7, a rear cover sealing ring 8 is arranged between the housing 7 and the rear cover 9, and the housing 7 is connected with a junction box 10.
It should be noted that sulfur hexafluoride gas or mixed gas enters through the base hole 16, the air pressure change drives the port of the C-shaped pipe 14 to deform, the movement 15 is driven to move through the temperature compensation sheet 13, the movement 15 shaft rotates to drive the display pointer 41 and the control pointer 42 to move, the dial 5 is fixed in front of the base 6, the magnetic-assisted switch 11 is fixed behind the base 6, the display pointer 41 is fixed in front of the movement 15 shaft, the control pointer 42 is fixed behind the movement 15 shaft, the rotation of the display pointer 41 can reflect the density change of the air on the dial 5, the rotation of the control pointer 42 can control the on-off of the magnetic-assisted switch 11, and therefore the separation of the display pointer 41 and the control pointer 42 can be achieved without mutual influence.
While the utility model has been described with reference to the preferred embodiments, it is not intended to limit the utility model thereto, and it is to be understood that other modifications and improvements may be made by those skilled in the art without departing from the spirit and scope of the utility model, which is therefore defined by the appended claims.
Claims (4)
1. The utility model provides a density relay, its characterized in that, including preceding housing (1), preceding housing (1) is connected with casing (7), casing (7) are connected with back lid (9), preceding housing (1) is connected with window glass (2), window glass (2) are connected with calibrated scale (5), be equipped with on calibrated scale (5) and show pointer (41), show pointer (41) are connected with core (15) one end, the core (15) other end is connected with control pointer (42), core (15) are connected with temperature compensation piece (13), temperature compensation piece (13) are connected with C venturi tube (14), C venturi tube (14) are connected and communicate with it, be equipped with base hole (16) on base (6), base (6) downside is equipped with gasket (12), the downside is equipped with magnetism helping switch (11), magnetism helping switch (11) are cooperateed with control pointer (42) position.
2. The density relay according to claim 1, characterized in that a front cover sealing ring (3) is arranged between the front cover shell (1) and the shell (7).
3. The density relay according to claim 2, characterized in that a back cover sealing ring (8) is arranged between the housing (7) and the back cover (9).
4. A density relay according to claim 3, characterized in that the housing (7) is connected to a junction box (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421819883.4U CN222995302U (en) | 2024-07-30 | 2024-07-30 | Density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421819883.4U CN222995302U (en) | 2024-07-30 | 2024-07-30 | Density relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222995302U true CN222995302U (en) | 2025-06-17 |
Family
ID=95984608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421819883.4U Active CN222995302U (en) | 2024-07-30 | 2024-07-30 | Density relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222995302U (en) |
-
2024
- 2024-07-30 CN CN202421819883.4U patent/CN222995302U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |