CN219977646U - Differential pressure indicator - Google Patents
Differential pressure indicator Download PDFInfo
- Publication number
- CN219977646U CN219977646U CN202320857869.2U CN202320857869U CN219977646U CN 219977646 U CN219977646 U CN 219977646U CN 202320857869 U CN202320857869 U CN 202320857869U CN 219977646 U CN219977646 U CN 219977646U
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- China
- Prior art keywords
- indicator
- magnetic control
- shell
- control circuit
- control switch
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- 238000007789 sealing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 5
- 230000007257 malfunction Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a differential pressure indicator, which comprises an indicator shell and a control circuit shell, wherein the control circuit shell is sleeved outside the indicator shell, one end of the control circuit shell is connected with an electric connection plug, two magnetic control switches and a relay are arranged inside the control circuit shell, and the relay is connected with the two magnetic control switches in series. Two indicator lamps are arranged on the outer side of the control circuit shell and are respectively connected with the magnetic control switch in parallel. The utility model is provided with the double magnetic control switches, when the double magnetic control switches are simultaneously closed, the relay is activated to trigger the alarm, so that staff is informed to check and maintain, and the false alarm condition caused by the failure of a single magnetic control switch is effectively avoided; through the operating condition of two pilot lamps, can audio-visually judge the operating condition of magnetic control switch, promptly when the operating condition of two pilot lamps is different, judge that magnetic control switch is malfunctioning, convenient in time maintain has effectively reduced the alarm condition that does not lead to because of single magnetic control switch is malfunctioning.
Description
Technical Field
The utility model belongs to the technical field of equipment maintenance, and particularly relates to a differential pressure indicator.
Background
The oil-related mechanical equipment basically needs to be matched with a filter for use, and when the service life of a filter element of the filter is over (namely, the blocking condition in the filter is serious), an electric signal is sent out by a pressure difference indicator to remind a worker to replace the filter element in time. However, in the actual use process, the common pressure difference indicator on the market usually only triggers an alarm through a single magnetic control switch, and as the magnetic control switch is easy to malfunction, false alarm or no alarm is frequently generated, and economic losses can be caused when the filter element of the filter is replaced in advance or not replaced in time.
The present utility model has been made in view of this.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a differential pressure indicator. In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:
a differential pressure indicator comprising an indicator housing, further comprising a control circuit housing;
the indicator shell is cylindrical, the bottom end of the indicator shell is provided with a liquid inlet and a limiting ring, the lower part of the outer wall of the indicator shell is provided with threads, the inner wall of the indicator shell is connected with a piston in a sliding manner, the top of the piston is provided with a magnet, and the bottom surface of the piston is connected with the top surface of the limiting ring through a spring;
the control circuit shell is sleeved and arranged outside the indicator shell, one end of the control circuit shell is connected with an electric connecting plug, a magnetic control switch and a relay are arranged inside the control circuit shell through clamping grooves, the magnetic control switch is provided with two magnetic control switches and is radially and symmetrically arranged, the relay is connected with the two magnetic control switches in series, two indicator lamps are arranged outside the control circuit shell, and the indicator lamps are respectively connected with the magnetic control switches in parallel.
Further, the relay is a current relay, and the relay is electrically connected with an alarm of the monitoring room.
Further, the outer wall of the indicator shell is sleeved with a sealing ring, and the sealing ring is located above the threads.
By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects.
According to the differential pressure indicator, the double magnetic control switches are arranged, when the double magnetic control switches are simultaneously closed, the two indicator lamps are short-circuited to cause current increase, the relay is activated, the alarm is triggered through the relay, and workers are timely informed of checking and maintaining, so that the false alarm condition caused by failure (normally closed) of the single magnetic control switch is effectively avoided; the working states of the magnetic control switch can be intuitively judged through the working states of the two indicator lamps which are respectively connected with the magnetic control switch in parallel, namely, when the working states of the two indicator lamps are different (one is bright and one is off), the malfunction of the magnetic control switch is judged, the maintenance is convenient in time, and the alarm-free condition caused by the malfunction (normal-off) of the single magnetic control switch is effectively reduced.
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of the simplified electrical principle of the present utility model.
In the figure: 1. an electrical connection plug; 2. an indicator housing; 3. an indicator light; 4. a control circuit housing; 5. a seal ring; 6. a thread; 7. a liquid inlet; 8. a limiting ring; 9. a spring; 10. a piston; 11. a magnet; 12. a magnetic control switch; 13. and a relay.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1-2, the differential pressure indicator according to the present embodiment includes an indicator housing 2 and a control circuit housing 4, the indicator housing 2 is hollow and cylindrical, the bottom end of the indicator housing 2 is provided with a liquid inlet 7 and a stop collar 8, and for facilitating later inspection and maintenance, the stop collar 8 and the indicator housing 2 are detachably mounted through bolts. The outer wall lower part of indicator casing 2 is equipped with screw thread 6, and indicator casing 2 passes through the connection disk seat spiro union of screw thread 6 with the filter, in order to improve the sealed effect that both are connected, the preferably cover is established at indicator casing 2 outer wall and is installed sealing ring 5, and sealing ring 5 is located screw thread 6 top, has effectively prevented that fluid from leaking. The inner wall sliding connection of indicator casing 2 has piston 10, and magnet 11 is installed at piston 10 top, and the bottom surface of piston 10 passes through spring 9 to be connected with the top surface of spacing ring 8.
The control circuit housing 4 is cylindrical, and is coaxially sleeved and installed outside the indicator housing 2, so that the control circuit housing 4 and the indicator housing 2 adopt a detachable connection mode, such as clamping connection, screwing connection and the like, for facilitating later inspection and maintenance. The upper end of the control circuit shell 4 is connected with an electric connection plug 1, and the electric connection plug 1 supplies power for the electric elements in the control circuit shell 4. The inside magnetic control switch 12 and the relay 13 of installing through the draw-in groove of control circuit casing 4, magnetic control switch 12 are equipped with two and radial symmetry installation, and relay 13 adopts current relay 13, and relay 13 and two magnetic control switch 12 series connection, and relay 13 passes through signal acquisition module and monitoring room's alarm detecting system to be connected simultaneously. Two indicator lamps 3 are arranged on the outer side of the control circuit shell 4, and the indicator lamps 3 are respectively connected with the magnetic control switch 12 in parallel.
The use principle of the device is that when the filter is not blocked, the pressure at the oil inlet is small, the piston 10 is positioned at the lower end of the indicator shell 2 under the action of the spring 9, the magnet 11 on the spring 9 is far away from the magnetic control switch 12, the two magnetic control switches 12 are in an off state, at the moment, the two indicator lamps 3 work normally and are lightened, the current in the circuit is smaller, the relay 13 is not activated, and the alarm is not triggered; when the filter is blocked, the pressure at the oil inlet is large, the piston 10 is extruded to move upwards to the upper end of the indicator shell 2, the magnet 11 on the spring 9 is close to the magnetic control switch 12, the two magnetic control switches 12 are in a closed state, the magnetic control switch 12 is closed to cause the indication lamp 3 to be short-circuited and not bright, meanwhile, the current in the circuit is increased, and only when the two magnetic control switches 12 are closed, the relay 13 is activated, an alarm detection system of the monitoring room is triggered through the signal acquisition module, the alarm is controlled to give an alarm, and workers are reminded of timely processing and maintenance, so that the false alarm condition caused by the failure (normally closed) of the single magnetic control switch 12 is effectively avoided. When one of the two magnetic control switches 12 fails, the working states of the two indicator lamps 3 are different (one is on or off), so that the two magnetic control switches are convenient to maintain in time through visual judgment, and the alarm-free condition caused by the failure (normal disconnection) of the single magnetic control switch 12 is effectively reduced. The utility model has simple structure, simple manufacture and convenient use, and is suitable for popularization and application.
The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the utility model, may be made by those skilled in the art without departing from the scope of the utility model.
Claims (3)
1. Differential pressure indicator comprising an indicator housing (2), characterized in that: also comprises a control circuit shell (4);
the indicator shell (2) is cylindrical, the bottom end of the indicator shell is provided with a liquid inlet (7) and a limiting ring (8), the lower part of the outer wall of the indicator shell (2) is provided with threads (6), the inner wall of the indicator shell is connected with a piston (10) in a sliding manner, the top of the piston (10) is provided with a magnet (11), and the bottom surface of the piston (10) is connected with the top surface of the limiting ring (8) through a spring (9);
the utility model discloses a magnetic control switch, including indicator casing (2), control circuit casing (4), magnetic control switch (12) and relay (13) are installed through the draw-in groove to control circuit casing (4) cover and establish to install outside indicator casing (2), the one end of control circuit casing (4) is connected with electric connecting plug (1), magnetic control switch (12) are equipped with two and radial symmetry installation, relay (13) are connected in series with two magnetic control switch (12), two pilot lamps (3) are installed in the control circuit casing (4) outside, pilot lamp (3) are connected with magnetic control switch (12) in parallel respectively.
2. A differential pressure indicator as defined in claim 1, wherein: the relay (13) is a current relay (13), and the relay (13) is electrically connected with an alarm of the monitoring room.
3. A differential pressure indicator as defined in claim 1, wherein: the outer wall of the indicator shell (2) is sleeved with a sealing ring (5), and the sealing ring (5) is positioned above the threads (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857869.2U CN219977646U (en) | 2023-04-12 | 2023-04-12 | Differential pressure indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857869.2U CN219977646U (en) | 2023-04-12 | 2023-04-12 | Differential pressure indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219977646U true CN219977646U (en) | 2023-11-07 |
Family
ID=88579002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320857869.2U Active CN219977646U (en) | 2023-04-12 | 2023-04-12 | Differential pressure indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219977646U (en) |
-
2023
- 2023-04-12 CN CN202320857869.2U patent/CN219977646U/en active Active
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