CN221302311U - Gas-electricity integrated differential pressure type static level - Google Patents

Abstract

The utility model relates to the technical field of differential pressure type hydrostatic level, and discloses a gas-electricity integrated differential pressure type hydrostatic level, which comprises a shell, a pressure sensor, a circuit board, two liquid joints and two gas-electricity integrated joints, wherein the interior of the shell is divided into a liquid cavity and a gas cavity, the pressure sensor is fixed between the liquid cavity and the gas cavity, one surface of a pressure sensing diaphragm of the pressure sensor is communicated with the liquid cavity, and the other surface of the pressure sensing diaphragm of the pressure sensor is communicated with the gas cavity; the circuit board is fixed in the gas cavity; the two liquid connectors are arranged at two ends of the shell and are communicated with the liquid cavity; the two gas-electricity integrated connectors are respectively arranged at two ends of the shell and are communicated with the gas cavity, a gas-electricity integrated wiring is arranged in the gas-electricity integrated connector, the gas-electricity integrated wiring comprises a plurality of connector air pipes and a plurality of connector electric leads, the connector air pipes are communicated with the gas cavity, and the connector electric leads are electrically connected with the pressure sensor and the circuit board; the gas-electricity integrated differential pressure type static level omits the gas guide hole, so that the installation is simpler and more convenient.

Description

Gas-electricity integrated differential pressure type static level

Technical Field

The utility model relates to the technical field of differential pressure type hydrostatic level, in particular to a gas-electricity integrated differential pressure type hydrostatic level.

Background

With the development of social economy, large-scale construction projects are continuously emerging, and the automatic monitoring of the safety aspect of the large-scale construction projects is highly valued.

The differential pressure type hydrostatic level gauge is a high-precision liquid level measuring system and is suitable for measuring the relative sedimentation change of a plurality of monitoring points. The method is mainly applied to automatic settlement monitoring of large structures, subways, bridges, tunnels, railways, water conservancy, dams and goafs.

Various differential pressure type static leveling instruments exist in the market at present and mainly comprise a liquid storage tank, a high-precision pressure core body, a circuit module, a protection shell, a cable interface, a liquid pipe interface, an air pipe interface and the like. The liquid guide hole, the gas guide hole and the cable interface of the static level are mutually independent, the traditional PU pipe joint is generally adopted by the liquid guide hole and the gas guide hole, the PU pipe is plugged into the interface and screwed up by a nut, time and labor are wasted in the installation process, and especially in the environment with low air temperature, the flexibility of the PU pipe is reduced due to the influence of the environment, and the installation is inconvenient.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model aims to provide a gas-electricity integrated differential pressure type static level, which omits the provision of an air guide hole, so that the installation is simpler and more convenient.

In order to achieve the above object, the present utility model provides the following technical solutions:

A gas-electric integrated differential pressure type hydrostatic level, comprising: the pressure sensor is fixed between the liquid cavity and the gas cavity, one surface of a pressure sensing diaphragm of the pressure sensor is communicated with the liquid cavity, and the other surface of the pressure sensing diaphragm of the pressure sensor is communicated with the gas cavity; the circuit board is fixed in the gas cavity and is electrically connected with the pressure sensor; the two liquid connectors are respectively arranged at two ends of the shell and are communicated with the liquid cavity; the two gas-electricity integrated connectors are respectively arranged at two ends of the shell and are communicated with the gas cavity, gas-electricity integrated wiring is arranged in the gas-electricity integrated connectors, the gas-electricity integrated wiring comprises a plurality of connector air pipes and a plurality of connector electric leads, the connector air pipes are communicated with the gas cavity, and the connector electric leads are electrically connected with the pressure sensor and the circuit board.

In the utility model, preferably, the gas-electricity integrated wiring comprises a joint gas pipe and four joint electric wires, wherein the four joint electric wires are uniformly distributed around the joint gas pipe, and the peripheries of the joint gas pipe and the joint electric wires are wrapped with insulating sleeves.

In the utility model, the gas-electric integrated cable comprises a gas pipe and four electric wires, the arrangement mode of the gas pipe and the electric wires corresponds to that of a joint gas pipe and a joint electric wire of the gas-electric integrated joint, the peripheries of the gas pipe and the electric wires are wrapped with armor protection layers, filling ropes are arranged between the gas pipe and the electric wires and the armor protection layers, the peripheries of the armor protection layers are wrapped with polyvinyl chloride jackets, the gas-electric integrated cable is connected with the gas-electric integrated joint, the gas pipe is correspondingly connected with the joint gas pipe, and the electric wires are correspondingly connected with the joint electric wires.

In the utility model, preferably, the gas-electric integrated connector is divided into a plug and a socket, the gas-electric integrated connector comprises a plug connector and a socket connector, the socket connector is arranged in the socket, the socket is in threaded connection with the shell, the plug is used for being connected with the gas-electric integrated cable, the plug connector is arranged in the plug, a locking mechanism is arranged on the plug, and the socket is detachably connected with the plug through the locking mechanism.

In the utility model, preferably, the socket comprises a socket shell, a socket wiring and a cover cap, wherein the socket shell is in threaded connection with the shell, the socket wiring is fixed in the socket shell, the cover cap comprises a connecting ring and a cover cap body, the connecting ring is connected with the cover cap body, and the connecting ring is sleeved on the socket shell; the plug comprises a plug inner shell, a plug wiring, a locking mechanism, a connecting sleeve and a locking sleeve, wherein the plug wiring is fixed in the plug inner shell, the connecting sleeve is sleeved on the plug inner shell, the locking mechanism is sleeved on the connecting sleeve, the locking sleeve is sleeved on the end part of the connecting sleeve, and the locking sleeve can lock the connecting sleeve.

In the present utility model, preferably, the socket connection is fixed in the socket outer case by a snap spring, and the plug connection is fixed in the plug inner case by a snap spring.

In the utility model, preferably, the shell is provided with an exhaust hole, the exhaust hole is communicated with the liquid cavity, and an exhaust valve with a waterproof silica gel ring is arranged in the exhaust hole in a matching way.

In the utility model, preferably, the liquid joint comprises a quick joint, a PU pipe and a ternary fluorine rubber ring, wherein the quick joint is fixedly connected with the shell and communicated with the liquid cavity, the PU pipe is inserted into the quick joint, the PU pipe is fixed with the quick joint through a snap spring, and the ternary fluorine rubber ring is arranged at the joint of the PU pipe and the quick joint.

In the utility model, preferably, the shell comprises a shell body, a liquid cavity cover plate and a gas cavity cover plate, wherein the liquid cavity cover plate is fixed on one side of a liquid cavity of the shell body, the gas cavity cover plate is fixed on one side of a gas cavity of the shell body, the liquid cavity cover plate and the gas cavity cover plate are connected with the shell body through screws, and a silica gel waterproof sealing ring is arranged between the liquid cavity cover plate and the shell body and between the gas cavity cover plate and the shell body.

In the utility model, the bottom plate is preferably further provided with a bottom plate, and the bottom plate is fixedly connected with the bottom of the shell through bolts.

Compared with the prior art, the utility model has the beneficial effects that:

1. Compared with the traditional differential pressure type static level, the shell of the pneumatic-electric integrated differential pressure type static level omits the provision of the air guide hole, so that the installation is simpler and more convenient, and the two ends of the shell only comprise the liquid joint and the pneumatic-electric integrated joint, so that the external structure is simpler, and the step of installing the air guide pipe is omitted.

2. The gas-electricity integrated connector of the gas-electricity integrated differential pressure type static level is divided into a plug and a socket, wherein the socket is fixedly connected with a shell in a threaded manner, communicated with an air cavity of the shell and electrically connected with a circuit board; the plug is connected with the gas-electricity integrated cable, and has the advantages of being rapid and convenient to install, time-saving and labor-saving.

3. The gas-electricity integrated cable and the gas-electricity integrated connector of the gas-electricity integrated differential pressure type static level are matched, the gas pipe and the electric wires are combined into the same cable, the gas pipe is omitted, the outer periphery of the static level is simpler, the installation is more convenient, the outer skin of the gas-electricity integrated cable is made of polyvinyl chloride, and the inner part of the gas-electricity integrated cable is provided with an armored protective layer, so that the gas-electricity integrated cable has the characteristics of wear resistance, corrosion resistance, good ductility, high strength and the like.

4. The quick connector of the gas-electricity integrated differential pressure type static level can be a liquid connector made of 304 stainless steel materials, the PU pipe is clamped by the clamp spring made of stainless steel materials, and the ternary fluorine rubber ring is further arranged in the quick connector, so that good air tightness is guaranteed, and the quick connector is also greatly superior to a traditional connector in the installation convenience degree.

Drawings

FIG. 1 is a schematic structural view of a gas-electric integrated differential pressure type hydrostatic level of the present utility model.

Fig. 2 is an exploded view of the interior of the housing and the floor of the present utility model.

Fig. 3 is a schematic internal cross-sectional view of the housing of the present utility model.

Fig. 4 is a schematic structural view of the optoelectronic integrated joint of the present utility model.

Fig. 5 is a schematic view of the internal structure of the optoelectronic integrated cable of the present utility model.

Fig. 6 is a schematic structural view of a plug of the optoelectronic integrated connector of the present utility model.

Fig. 7 is an exploded view of a plug of the photovoltaic integrated connector of the present utility model.

Fig. 8 is a schematic structural view of a socket of the optoelectronic integrated connector of the present utility model.

In the accompanying drawings: 1. a housing; 101. a liquid chamber; 102. a gas chamber; 103. an exhaust hole; 104. an exhaust valve; 105. a case main body; 106. a liquid chamber cover plate; 107. a gas chamber cover plate; 108. a silica gel waterproof sealing ring; 2. a pressure sensor; 3. a circuit board; 4. a liquid joint; 401. a quick connector; 402. a PU pipe; 5. a gas-electricity integrated joint; 501. gas-electricity integrated wiring; 5011. connecting an air pipe; 5012. connecting the electrical leads; 5013. an insulating sleeve; 5A, a plug; 5A1, plug wiring; 5A2, plug inner housing; 5A3, a locking mechanism; 5A4, connecting sleeve; 5A5, a locking sleeve; 5B, a socket; 5B1, wiring of a socket; 5B2, a socket housing; 5B3, a cap; 5B31, a connecting ring; 5B32, a cap body; 6. a gas-electricity integrated cable; 601. an air pipe; 602. an electrical lead; 603. an armor protection layer; 604. a filling rope; 605. a polyvinyl chloride sheath; 7. a bottom plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 8, a preferred embodiment of the present utility model provides an electro-pneumatic integrated differential pressure type hydrostatic level, comprising: the device comprises a shell 1, a pressure sensor 2, a circuit board 3, two liquid connectors 4 and two gas-electricity integrated connectors 5.

As shown in fig. 2 and 3, the interior of the housing 1 is divided into a liquid chamber 101 and a gas chamber 102, a narrow space is left between the liquid chamber 101 and the gas chamber 102, the pressure sensor 2 is fixed in the narrow space, and the tightness between the pressure sensor 2 and the housing 1 is maintained, so that the liquid chamber 101 and the gas chamber 102 are completely isolated.

One surface of the pressure sensing diaphragm of the pressure sensor 2 is communicated with the liquid cavity 101, the other surface of the pressure sensing diaphragm is communicated with the gas cavity 102, a shell can be used for fixing the pressure sensing diaphragm, one surface of the pressure sensing diaphragm faces the inside of the liquid cavity 101 and is used for receiving liquid pressure, the other surface of the pressure sensing diaphragm is located in the shell, a section of pipeline extends out of the shell, and the section of pipeline is connected to the gas cavity 102, so that the other surface of the pressure sensing diaphragm is communicated with the gas cavity 102.

The circuit board 3 is fixed in the gas cavity 102, and can be fixedly connected with the inner wall of the shell 1 by bolts and the like, and the circuit board 3 is electrically connected with the pressure sensor 2 and is used for receiving the electric signal of the pressure sensor 2. Two liquid connectors 4 are respectively arranged at two ends of the shell 1 and are communicated with the liquid cavity 101 for connecting a liquid pipe. The two gas-electricity integrated connectors 5 are respectively arranged at two ends of the shell 1 and are communicated with the gas cavity 102, as shown in fig. 4, a gas-electricity integrated connection 501 is arranged in the gas-electricity integrated connector 5, the gas-electricity integrated connection 501 comprises a plurality of connector gas pipes 5011 and a plurality of connector electric leads 5012, the connector gas pipes 5011 are communicated with the gas cavity 102 and are used for communicating the gas cavity 102 with the atmosphere or other air pressure environments during measurement, and the air pressure balance at two sides of the pressure sensor 2 is kept.

The electrical connection between the connector electrical lead 5012 and the pressure sensor 2 and the circuit board 3 may be directly connected by the connector electrical lead 5012 or may be indirect electrical connection through the transfer of other conductive devices. For example, when the pressure sensor 2 is directly connected to the power supply, the electrical connector wire 5012 is required to be directly connected to the pressure sensor 2, and because of the requirement of electrical signal transmission, the pressure sensor 2 is directly electrically connected to the circuit board 3, and the power supply of the circuit board 3 requires that the circuit board 3 be connected to the power supply again, so that the circuit board 3 is required to be connected to the electrical connector wire 5012 again; for another example, the pressure sensor 2 is powered by the circuit of the circuit board 3, and then the pressure sensor 2 is only directly connected to the circuit board 3, and then the circuit board 3 is directly connected to the power supply by the electric wires 602 of the circuit board 3. Both of these cases are covered in the category of the electrical connection of the electrical connector lead 5012 to the pressure sensor 2 and the circuit board 3. In addition, the electrical conductors 602 of the circuit board 3 may be used for transmitting electrical signals or for transmitting electrical energy.

The working principle of the differential pressure type hydrostatic level is that the liquid joint 4 is connected with a liquid conduit, the end part of the liquid conduit is arranged at a measuring point, the pressure sensor 2 can sense the pressure in the liquid cavity 101, and the pressure value of the pressure sensor 2 reflects the height of the end part of the liquid conduit because the pressure in the liquid cavity 101 is related to the liquid level height in the liquid conduit, and if the height of the end part of the liquid conduit changes, the pressure value of the pressure sensor 2 correspondingly changes, and the conditions that the end part (namely the measuring point) of the liquid conduit is settled or the height of the measuring point is changed can be reflected. Because the liquid surface at the end part of the liquid conduit is communicated with a gas medium (usually the atmosphere), in order to ensure the air pressure balance at the two sides of the pressure sensor 2, the gas cavity 102 is arranged, and the air pressure balance can be realized by communicating the gas cavity 102 with the gas medium communicated with the liquid surface at the end part of the liquid conduit, so that the accuracy of the measurement of the liquid pressure is ensured.

Compared with the traditional differential pressure type hydrostatic level, the shell 1 of the pneumatic-electric integrated differential pressure type hydrostatic level omits the gas guide holes, so that the installation is simpler and more convenient, and the two ends of the shell 1 only comprise the liquid joint 4 and the pneumatic-electric integrated joint 5, so that the external structure is simpler, and the step of installing the gas guide pipe 601 is omitted.

In a preferred embodiment of the present utility model, as shown in fig. 4, the integrated gas-electric connection 501 includes a gas pipe 5011 and four electrical conductors 5012, the four electrical conductors 5012 are uniformly arranged around the gas pipe 5011, and the gas pipe 5011 and the electrical conductors 5012 are covered with an insulating sleeve 5013.

For the convenient to use of hydrostatic level, still be furnished with the integrative cable 6 of gas-electricity with the integrative joint 5 looks adaptation of gas-electricity, as shown in fig. 5, the integrative cable 6 of gas-electricity includes a trachea 601 and four electrical leads 602, the trachea 601 and the corresponding with joint trachea 5011 and joint electrical lead 5012 of the integrative joint 5 of gas-electricity of the mode of arranging of electrical lead 602, the trachea 601 is located the center of cable, four electrical leads 602 evenly distributed is around the trachea 601, four sides of trachea 601 promptly, the periphery parcel of trachea 601 and electrical lead 602 has armor layer 603, be filled rope 604 between trachea 601 and electrical lead 602 and the armor layer 603, armor layer 603 periphery parcel has polyvinyl chloride sheath 605, the integrative cable 6 of gas-electricity is connected with the integrative joint 5 of gas-electricity, trachea 601 is connected with joint trachea 5011 corresponds, electrical lead 602 is connected with joint electrical lead 5012 corresponds.

The gas-electricity integrated differential pressure type static level of the embodiment specifically sets the gas-electricity integrated connector 5 and the gas-electricity integrated cable 6 as the gas pipe 601 and the four electric wires 602, can meet the use of the differential pressure type static level prepared by the number of lines, omits to set up gas guide holes, ensures that the installation is simpler and more convenient, and only comprises the liquid connector 4 and the gas-electricity integrated connector 5 at two ends of the shell 1, so that the external structure is simpler; the gas-electricity integrated cable 6 is matched with the gas-electricity integrated connector 5, the gas pipe 601 and the electric wire 602 are combined into the same cable, the gas pipe 601 is omitted, the outer periphery of the static level is simpler, the installation is more convenient, the outer skin of the gas-electricity integrated cable 6 is made of polyvinyl chloride, and the inner part is provided with an armored protective layer, so that the gas-electricity integrated cable has the characteristics of wear resistance, corrosion resistance, good ductility, high strength and the like.

In a preferred embodiment of the present utility model, as shown in fig. 4, the integrated gas-electric connector 5 is divided into a plug 5A and a socket 5B, the integrated gas-electric connector 501 includes a plug connection 5A1 and a socket connection 5B1, the socket connection 5B1 is disposed in the socket 5B, the socket 5B is screwed with the housing 1, the plug 5A is used for connecting with the integrated gas-electric cable 6, the plug connection 5A1 is disposed in the plug 5A, a locking mechanism 5A3 is disposed on the plug 5A, and the socket 5B is detachably connected with the plug 5A through the locking mechanism 5A 3.

Specifically, as shown in fig. 8, the socket 5B includes a socket housing 5B2, a socket wiring 5B1, and a cap 5B3, the socket housing 5B2 is in threaded connection with the housing 1, the socket wiring 5B1 is fixed in the socket housing 5B2, and optionally, the socket wiring 5B1 may be clamped in the socket housing 5B2 by setting a clamp spring at an end of the socket wiring 5B1, so as to achieve fixing of the socket wiring 5B1 in the socket housing 5B 2. The cap 5B3 includes a connection ring 5B31 and a cap body 5B32, the connection ring 5B31 is connected with the cap body 5B32, the connection ring 5B31 is sleeved on the socket housing 5B2, and when the socket 5B is not connected with the plug 5A, the cap body 5B32 can be used to cover the end of the socket 5B, so as to keep the end of the socket 5B clean.

As shown in fig. 6 and 7, the plug 5A includes a plug inner housing 5A2, a plug connection 5A1, a locking mechanism 5A3, a connecting sleeve 5A4, and a locking sleeve 5A5, wherein the plug connection 5A1 is fixed in the plug inner housing 5A2, alternatively, the plug connection 5A1 may be clamped in the plug inner housing 5A2 by arranging a clamp spring at an end of the plug connection 5A1, so as to fix the plug connection in the plug inner housing 5A 2. The connecting sleeve 5A4 is sleeved on the plug inner shell 5A2, the locking mechanism 5A3 is sleeved on the connecting sleeve 5A4, the locking sleeve 5A5 is sleeved on the end part of the connecting sleeve 5A4, and the connecting sleeve 5A4 can be locked by the locking sleeve 5A 5. The gas-electric integrated cable 6 is sequentially inserted into the locking sleeve 5A5 and the connecting sleeve 5A4, so that the gas-electric integrated cable is in tight contact with the plug wiring 5A1, connection of a gas pipe and an electric wire is achieved, the locking sleeve 5A5 is screwed, fixing of the gas-electric integrated cable 6 in the plug 5A can be achieved, then the plug 5A is connected with the socket 5B, the locking mechanism 5A3 is locked, and quick installation of the gas-electric integrated cable 6 and the gas-electric integrated connector 5 is achieved.

The gas-electricity integrated connector 5 of the gas-electricity integrated differential pressure type static level of the embodiment is divided into a plug 5A and a socket 5B, wherein the socket 5B is fixedly connected with the shell 1 in a threaded manner, communicated with the gas cavity 102 of the shell 1 and electrically connected with the circuit board 3; the plug 5A is connected with the gas-electricity integrated cable 6, and has the advantages of being rapid and convenient to install, time-saving and labor-saving.

In a preferred embodiment of the present utility model, as shown in fig. 1 to 3, a vent hole 103 is provided on the housing 1, the vent hole 103 is communicated with the liquid cavity 101, and a vent valve 104 with a waterproof silica gel ring is provided in the vent hole 103 in a matching manner. The exhaust valve 104 is used to exhaust the gas in the liquid chamber 101 to prevent the liquid pressure in the liquid chamber 101 from being disturbed by the mixed gas, so that the measurement data is inaccurate.

In a preferred embodiment of the present utility model, as shown in fig. 1, the liquid joint 4 includes a quick connector 401, a PU tube 402 and a ternary fluoro rubber ring (not shown in the drawing), the quick connector 401 is fixedly connected with the housing 1 and is communicated with the liquid chamber 101, the PU tube 402 is inserted into the quick connector 401, the PU tube 402 and the quick connector 401 are fixed by a snap spring (the quick connector 401 is in an open structure, the PU tube 402 is directly inserted until reaching the bottom, the snap spring clamps the PU tube 402), the ternary fluoro rubber ring is arranged at the joint of the PU tube 402 and the quick connector 401, and the ternary fluoro rubber ring can squeeze the inexact space, thereby playing a role of sealing.

The liquid joint of this embodiment's integrative pressure differential hydrostatic level of gas electricity adopts the quick-operation joint that stainless steel matter (like 304 stainless steel) was made, and inside adopts the jump ring that is stainless steel matter with PU pipe 402 blocking, and inside still is provided with ternary fluorine rubber circle in addition, has guaranteed good gas tightness, also is superior to traditional connector greatly in the installation convenient degree.

In a preferred embodiment of the present utility model, as shown in fig. 2, the housing 1 includes a housing body 105, a liquid chamber cover 106, and a gas chamber cover 107, the liquid chamber cover 106 is fixed on the liquid chamber 101 side of the housing body 105, the gas chamber cover 107 is fixed on the gas chamber 102 side of the housing body 105, the liquid chamber cover 106 and the gas chamber cover 107 are connected to the housing body 105 by screws, and a silica gel waterproof seal 108 is provided between the liquid chamber cover 106 and the housing body 105, and between the gas chamber cover 107 and the housing body 105. In order to stabilize the shell 1, the gas-electricity integrated differential pressure type static level can be further provided with a bottom plate 7, the bottom plate 7 is fixedly connected with the bottom of the shell 1 through bolts, the area of the bottom plate 7 is large, the contact area between the bottom and the ground is increased, and therefore the effect of stabilizing the whole device is achieved.

This embodiment is through setting up casing 1 into the split structure of casing body 105, liquid chamber apron 106 and gas chamber apron 107, makes things convenient for the installation and the dismantlement of casing 1, sets up the leakproofness in two chambeies of casing 1 to waterproof sealing washer 108 of silica gel, through increasing bottom plate 7, makes gas-electricity integration pressure differential type hydrostatic level more firm.

The foregoing description is directed to the preferred embodiments of the present utility model, but the embodiments are not intended to limit the scope of the utility model, and all equivalent changes or modifications made under the technical spirit of the present utility model should be construed to fall within the scope of the present utility model.

Claims (10)

1. A gas-electric integrated differential pressure type hydrostatic level, comprising: a shell, a pressure sensor, a circuit board, two liquid joints and two gas-electricity integrated joints,

The pressure sensor is fixed between the liquid cavity and the gas cavity, one surface of a pressure sensing diaphragm of the pressure sensor is communicated with the liquid cavity, and the other surface of the pressure sensing diaphragm of the pressure sensor is communicated with the gas cavity;

the circuit board is fixed in the gas cavity and is electrically connected with the pressure sensor;

The two liquid connectors are respectively arranged at two ends of the shell and are communicated with the liquid cavity;

The two gas-electricity integrated connectors are respectively arranged at two ends of the shell and are communicated with the gas cavity, gas-electricity integrated wiring is arranged in the gas-electricity integrated connectors, the gas-electricity integrated wiring comprises a plurality of connector air pipes and a plurality of connector electric leads, the connector air pipes are communicated with the gas cavity, and the connector electric leads are electrically connected with the pressure sensor and the circuit board.

2. The pneumoelectric integrated differential pressure type hydrostatic level according to claim 1, wherein the pneumoelectric integrated wiring comprises a joint air pipe and four joint electric wires, the four joint electric wires are uniformly distributed around the joint air pipe, and the peripheries of the joint air pipe and the joint electric wires are wrapped with insulating sleeves.

3. The gas-electric integrated differential pressure type hydrostatic level according to claim 2, further comprising a plurality of gas-electric integrated cables, wherein the gas-electric integrated cables comprise a gas pipe and four electric wires, the gas pipe and the electric wires are arranged in a mode corresponding to a joint gas pipe and a joint electric wire of the gas-electric integrated joint, an armor protection layer is wrapped on the peripheries of the gas pipe and the electric wires, a filling rope is arranged between the gas pipe and the electric wires and the armor protection layer, a polyvinyl chloride sheath is wrapped on the peripheries of the armor protection layer, the gas-electric integrated cables are connected with the gas-electric integrated joint, the gas pipe is correspondingly connected with the joint gas pipe, and the electric wires are correspondingly connected with the joint electric wires.

4. A gas-electricity integrated differential pressure type hydrostatic level according to claim 3, wherein the gas-electricity integrated connector is divided into a plug and a socket, the gas-electricity integrated connector comprises a plug connector and a socket connector, the socket connector is arranged in the socket, the socket is in threaded connection with the shell, the plug is used for being connected with the gas-electricity integrated cable, the plug connector is arranged in the plug, a locking mechanism is arranged on the plug, and the socket is detachably connected with the plug through the locking mechanism.

5. The electro-pneumatic integrated differential pressure type hydrostatic level according to claim 4, wherein,

The socket comprises a socket shell, a socket wiring and a cover cap, wherein the socket shell is in threaded connection with the shell, the socket wiring is fixed in the socket shell, the cover cap comprises a connecting ring and a cover cap body, the connecting ring is connected with the cover cap body, and the connecting ring is sleeved on the socket shell;

The plug comprises a plug inner shell, a plug wiring, a locking mechanism, a connecting sleeve and a locking sleeve, wherein the plug wiring is fixed in the plug inner shell, the connecting sleeve is sleeved on the plug inner shell, the locking mechanism is sleeved on the connecting sleeve, the locking sleeve is sleeved on the end part of the connecting sleeve, and the locking sleeve can lock the connecting sleeve.

6. The electro-pneumatic integrated differential hydrostatic level of claim 5, wherein said socket wire is secured within said socket housing by a snap spring and said plug wire is secured within said plug inner housing by a snap spring.

7. The pneumoelectric integrated differential pressure type static level according to claim 1, wherein the shell is provided with an exhaust hole, the exhaust hole is communicated with the liquid cavity, and an exhaust valve with a waterproof silica gel ring is arranged in the exhaust hole in a matching mode.

8. The pneumoelectric integrated differential pressure type static level according to claim 1, wherein the liquid joint comprises a quick joint, a PU pipe and a ternary fluorine rubber ring, the quick joint is fixedly connected with the shell and is communicated with the liquid cavity, the PU pipe is inserted into the quick joint, the PU pipe is fixed with the quick joint through a snap spring, and the ternary fluorine rubber ring is arranged at the joint of the PU pipe and the quick joint.

9. The pneumoelectric integrated differential pressure type static level according to claim 1, wherein the shell comprises a shell body, a liquid cavity cover plate and a gas cavity cover plate, the liquid cavity cover plate is fixed on one side of the liquid cavity of the shell body, the gas cavity cover plate is fixed on one side of the gas cavity of the shell body, the liquid cavity cover plate and the gas cavity cover plate are connected with the shell body through screws, and a silica gel waterproof sealing ring is arranged between the liquid cavity cover plate and the shell body and between the gas cavity cover plate and the shell body.

10. The electro-pneumatic integrated differential pressure type hydrostatic level of claim 1, further comprising a bottom plate fixedly connected to the bottom of the housing by bolts.