CN213022119U - Submersible pressure gauge and water pressure monitoring system - Google Patents

Abstract

The utility model discloses a dive type manometer, this dive type manometer treat the pressure at pressure measurement position and convert the signal of telecommunication, transmit the outside pressure sensing unit of dive type manometer including being used for the sensing, and be used for detecting the leakage detection unit that dive type manometer leaked. The utility model also discloses a water pressure monitoring system. The technical scheme of the utility model not only can gather pressure under water accurately in a flexible way, can in time detect the table body leakage of dive type manometer and report to the police moreover, consequently be applicable to very much the scene to the high-efficient monitoring of pressure under water.

Description

Submersible pressure gauge and water pressure monitoring system

Technical Field

The utility model relates to a pressure monitoring field especially relates to dive type manometer and water pressure monitoring system.

Background

In the field of monitoring, particularly in the field of underwater monitoring, a pressure gauge is a common instrument for measuring pressure and depth and can provide important parameters for guaranteeing safe underwater navigation of ships.

At present, most of underwater pressure meters applied in practice cause the rotation of a pointer to display pressure through the elastic deformation of sensitive elements (Bourdon tube, bellows and bellows) in the pressure meter, and have the defects of numerical value estimation, large error, error after vibration and the like during measurement. Along with the lapse of time, the electronic parts inside the instrument can be damaged to the sea water that leaks, if fail in time to detect and change, then can bring the potential safety hazard for the naval vessel sailing under water.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dive type manometer, water pressure monitoring system has solved and has used the accurate pressure measurement of dive type manometer and the leak detection problem of the table body among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

according to an aspect of the utility model, a dive type manometer is provided, include: the pressure sensing unit is used for sensing the pressure of the part to be measured, converting the pressure into an electric signal and transmitting the electric signal to the outside of the submersible pressure gauge; and a leakage detection unit for detecting leakage of the submersible pressure gauge.

According to the utility model discloses an in the dive type manometer, optionally, the leakage detection unit design is the insulation test unit for whether leak in the dive type manometer is judged to the insulation resistance value that measures from this insulation test unit.

In the submersible pressure gauge according to the present invention, optionally, the pressure sensing unit and the insulation testing unit are disposed in a sealed chamber, and the sealed chamber includes a bottom plate and a cylinder body which are hermetically connected to each other.

In accordance with the utility model discloses an in the dive type manometer, optionally, the dive type manometer still includes dive electric connector for pressure sensing unit and/or insulation test unit and outside signal intercommunication.

In accordance with the utility model discloses an in the dive type manometer, optionally, the pressure sensing unit includes pressure sensor, this pressure sensor pressure-measuring pipe with the centre bore of bottom plate is linked together.

According to the utility model discloses an in the dive type manometer, optionally, pressure sensor is equipped with two binding post, this binding post respectively through the signal line with two inside binding post of dive electric connector connect.

In a submersible pressure gauge according to the present invention, optionally, the submersible electrical connector is connected by a plug into a socket. Preferably, a plug model SM30T5K-S-18 and a socket model SM30GZ5Z-01S are used.

In a submersible pressure gauge according to the present invention, optionally, the insulation test unit comprises an insulator fixed to the bottom plate and a first metal screw directly fixed to the insulator, the insulation test unit further comprises a second metal screw directly fixed to the bottom plate, the first and second metal screws are connected to two other internal connection terminals of the submersible electrical connector through metal wires, respectively. The insulation resistance value between the first metal screw and the second metal screw is used for judging whether the submersible pressure gauge leaks or not.

In the submersible pressure gauge according to the present invention, optionally, a holding tank is provided on the bottom plate, and the insulator is embedded in the holding tank, and is made of a non-conductive polytetrafluoroethylene material.

According to the utility model discloses an in the dive type manometer, optionally, bottom plate, barrel, pressure sensor's pressure measurement mouth all adopts the metal titanium material, can improve resistant seawater corrosion strength.

According to another aspect of the utility model, a water pressure monitoring system is provided, include: the submersible pressure gauge; the pressure signal receiving instrument is used for receiving a pressure signal from the submersible pressure gauge; and the insulation alarm is used for judging whether leakage occurs or not by testing the insulation resistance value in the submersible pressure gauge.

The water pressure monitoring working principle of the submersible pressure gauge is as follows:

the pressure sensor in the meter collects pressure through a shell pressure measuring port and converts the pressure into an electric signal, and the electric signal is transmitted to the control room through the submersible electric connector, so that the water pressure can be monitored in real time;

according to the liquid pressure formula P ═ ρ gh, under the condition that the liquid density ρ, the gravity acceleration g (constant) and the water pressure P (measured by the submersible pressure gauge) are known, the depth of the submersible pressure gauge (ship) can be calculated, and the real-time monitoring of the water depth can be realized.

The leakage detection working principle of the submersible pressure gauge or the water pressure monitoring system is as follows: the insulation resistance value between the insulator terminal (a first metal screw) and the metal shell (a second metal screw) on the bottom plate of the shell is detected, signals are transmitted to the insulation alarm instrument in real time, and whether water leakage occurs or not is judged according to the insulation resistance value of the submersible pressure gauge.

According to the utility model discloses an among the water pressure monitoring system, optionally, pressure receiver and insulating alarm instrument are placed usually in the naval vessel control room, and wherein pressure signal receiver comprises programmable control device (PLC) or Distributed Control System (DCS) usually.

According to the utility model discloses an among the water pressure monitoring system, optionally, the pressure signal reception appearance passes through dive electric connector with pressure sensor is connected, and/or, insulating alarm appearance passes through dive electric connector with insulating test unit is connected.

After the insulating alarm instrument gives an alarm, the underwater pressure instrument can make a prejudgment before being damaged, and a new instrument can be replaced in time so as to avoid safety loss.

Compared with the prior art, the utility model provides a dive type manometer, water pressure monitoring system, not only can be nimble accurate collection pressure under water, can in time detect the table body of dive type manometer moreover and leak and report to the police, consequently be applicable to very much the scene to pressure and the high-efficient monitoring of depth of water under water.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the submersible pressure gauge and the communication between the submersible pressure gauge and an external signal according to an embodiment of the present invention.

Fig. 2 is a schematic view showing leakage in the submersible pressure gauge of fig. 1.

List of reference numerals:

the device comprises a base plate 1, an insulator 2, metal screws 3 and 3', a pressure sensor 4, a cylinder 5, a first connecting wire 6, a second connecting wire 6, a submersible electric connector 7, a connecting terminal 8, an insulation alarm 9 and a pressure signal receiver 10.

Detailed Description

The technical solution of the embodiment of the present invention will be described below with reference to the accompanying drawings. It is clear that the described embodiments relate only to a part of the embodiments of the invention, and not to all embodiments. Based on the embodiments disclosed in the present application, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of this application are used for distinguishing between different objects and not necessarily for describing a particular sequential order. Furthermore, the terms "comprising" and "having," as well as any variant thereof, are intended to cover a non-exclusive inclusion. For example, a process, product or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, product or apparatus. It will be understood by those within the art that throughout the present specification and claims, certain terms are used to indicate a relative orientation or position based on the orientation or position shown in the drawings, which is for convenience only and to simplify the description, and not to indicate or imply that the device, mechanism, structure or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, the terms should not be considered as limiting the invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one implementation of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Fig. 1 shows a submersible pressure gauge according to an embodiment of the present invention. The submersible pressure gauge comprises a shell, a submersible electric connector 7, a pressure sensor 4 arranged in the shell, an insulator 2 and metal screws 3 and 3'.

The shell is a welding seal cavity and can be fixedly arranged on a platform of a ship. The housing 1 comprises a base plate 1 and a cylinder 5, in which housing a pressure sensor 4 and a submersible electrical connector 7 are arranged. The pressure measuring tube of the pressure sensor 4 is sealingly connected to the central bore of the base plate 1. The upper part of the pressure sensor 4 is provided with two terminals 8 which are connected to the two internal terminals for pressure signals of the submersible electrical connector 7 via signal lines 6', respectively. The submersible electrical connector 7 is sealingly connected with the central hole in the upper part of the barrel 5. The upper plane of the bottom plate 1 is provided with a cylindrical groove, and an insulator 2 is embedded in the cylindrical groove. Insulator 2 is typically a non-conductive ptfe material. A metal screw 3 is arranged on the insulating body 2 and is connected via a metal line 6 to an internal terminal for leakage signals of a submersible electrical connector 7. A metal screw 3' is arranged on the upper plane of the base plate 1 and is connected to another internal terminal for leakage signals of a submersible electrical connector 7 by another metal wire 6.

In this embodiment, the pressure sensor 4 senses the pressure at the site to be measured and converts the pressure into an electrical signal, which is transmitted to the outside of the submersible pressure gauge.

In the submersible pressure gauge shown in fig. 1, a pressure measuring function is implemented by a pressure sensor. Here, the external signal terminals of the submersible electric connector 7 are connected to the outside, for example, to a pressure signal receiver 10 and an insulation alarm 9 provided in a ship control room, respectively, in this order through signal lines, thereby forming a water pressure monitoring system having not only an underwater pressure measuring function but also a function of detecting a case leakage on line.

In the exemplary embodiment shown in fig. 1, the pressure signal receiver 10 can be designed as a programmable control unit (PLC) or as a Distributed Control System (DCS).

It is noted that in the embodiment shown in fig. 1, the signal communication among the submersible pressure gauge, the pressure signal receiver 10 and the insulation alarm 9 is realized by wired signal connection. In other embodiments, the wireless communication mode may be used to transmit and receive signals.

The water pressure monitoring system is particularly suitable for monitoring the pressure change of a part to be measured in real time and early warning according to specific requirements and hardware setting and can further comprise a display terminal and analysis software.

No leakage of the casing

As shown in fig. 1, there is no leakage in the submersible pressure gauge, since the first metal screw 3 is disposed on the insulator 4, the insulation resistance between the first and second metal screws 3, 3 'is theoretically infinite, and when the insulation alarm 9 is connected to the first and second metal screws 3, 3' at the monitoring end through the submersible electric connector 7, the insulation resistance between them is greater than 100 megaohms by testing, it indicates that the housing is leakage-free and continues to be in the monitoring state.

Case of leakage

As shown in figure 2, the submersible pressure gauge has leakage, the first metal screw 3 and the second metal screw 3 'are conducted through the leakage through the metal lead 6 and the metal lead 6', so that the insulation resistance value in the submersible pressure gauge is less than or equal to 100 megaohms, and when the insulation resistance value is monitored by an insulation alarm instrument, the shell is indicated to have leakage, and an alarm is given immediately.

In the above embodiment, the insulation resistance of the submersible pressure gauge is detected to determine whether water leakage occurs. In other embodiments, the water leakage can be determined by detecting the humidity inside the submersible pressure gauge.

The above description of the embodiments is only intended to help understand the core idea of the present invention. It will, of course, be understood by those skilled in the art that various modifications and additions may be made to the specific embodiments described, or substituted in a similar manner, without departing from the spirit of the invention or exceeding the scope thereof as defined in the appended claims.

Claims (11)

1. A submersible pressure gauge, comprising:

the pressure sensing unit is used for sensing the pressure of the part to be measured, converting the pressure into an electric signal and transmitting the electric signal to the outside of the submersible pressure gauge; and

and the leakage detection unit is used for detecting the leakage of the submersible pressure gauge.

2. The submersible pressure gauge according to claim 1, wherein the leak detection unit is configured as an insulation test unit for determining whether there is a leak in the submersible pressure gauge from an insulation resistance value measured by the insulation test unit.

3. Submersible pressure gauge according to claim 2, characterized in that the pressure sensing unit and the insulation testing unit are arranged in a sealed chamber comprising a bottom plate (1) and a cylinder (5) sealingly connected to each other.

4. Submersible pressure gauge according to claim 3, characterized in that it further comprises submersible electrical connectors (7) for the signal communication of the pressure sensing unit and/or the insulation test unit with the outside.

5. Submersible pressure gauge according to claim 4, characterized in that said pressure sensing unit comprises a pressure sensor (4) communicating with the central hole of the bottom plate (1) via a pressure measuring tube.

6. Submersible pressure gauge according to claim 5, characterized in that the pressure sensor (4) is provided with two terminals (8) which are connected via signal lines (6 ', 6') to two internal terminals of the submersible electrical connector (7).

7. Submersible pressure gauge according to claim 4, characterized in that the insulation test unit comprises an insulator (2) fixed to the base plate (1) and a first metal screw (3) fixed directly to the insulator, and in that the insulation test unit further comprises a second metal screw (3 ') fixed directly to the base plate (1), the first and second metal screws (3, 3') being connected to two further internal terminals of the submersible electrical connector (7) by metal wires (6, 6), respectively.

8. The submersible pressure gauge according to claim 7, wherein the bottom plate is provided with a receiving groove, the insulator (2) is embedded in the receiving groove, and/or the insulator (2) is made of non-conductive tetrafluoro material, and the bottom plate (1), the cylinder (5) and the pressure measuring port of the pressure sensor (4) are made of metal titanium.

9. A water pressure monitoring system, comprising:

a submersible pressure gauge according to any one of claims 4 to 8;

a pressure signal receiver (10) for receiving a pressure signal from a submersible pressure gauge; and

and the insulation alarm (9) is used for judging whether leakage occurs or not by testing the insulation resistance value in the submersible pressure gauge.

10. The water pressure monitoring system according to claim 9, wherein the pressure signal receiver (10) is connected to the pressure sensor (4) of the submersible pressure gauge via a submersible electrical connector (7) of the submersible pressure gauge, and/or the insulation alarm (9) is connected to the insulation test unit of the submersible pressure gauge via a submersible electrical connector (7) of the submersible pressure gauge.

11. A water pressure monitoring system, comprising:

a submersible pressure gauge according to any one of claims 1 to 4;

a pressure signal receiver (10) for receiving a pressure signal from a submersible pressure gauge; and

and the insulation alarm (9) is used for judging whether leakage occurs or not by testing the insulation resistance value in the submersible pressure gauge.

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