CN220525207U - Dynamic hydraulic pressure sensor and dynamic hydraulic pressure monitoring module - Google Patents

Abstract

The utility model discloses a dynamic hydraulic pressure sensor and a dynamic hydraulic pressure monitoring module. The dynamic hydraulic sensor is electrically connected with the logic controller and comprises a lower shell, an upper shell and a ceramic pressure sensing device. The lower shell is provided with a containing groove and a liquid channel, the opening of the containing groove is upward, and the upper shell is fixedly connected with the lower shell. The ceramic pressure sensing device is arranged in the accommodating groove and is fixed between the lower shell and the upper shell, and comprises an annular main body, a deformation layer, a sensitive resistor and a circuit layer, wherein an inner hole is defined in the annular main body, and the bottom end of the inner hole is communicated with the liquid channel so that the liquid phase of the liquid channel can enter the inner hole to enable the deformation layer to be pressed and deformed. The sensing resistor and the circuit layer are arranged on the deformation layer, and the sensing resistor outputs an electric signal to the logic controller through the circuit layer according to the resistance value of the sensing resistor, so that the logic controller outputs a corresponding pressure value according to the electric signal, and dynamic persistence monitoring is realized.

Description

Dynamic hydraulic pressure sensor and dynamic hydraulic pressure monitoring module

Technical Field

The utility model relates to the technical field of hydraulic sensors, in particular to a dynamic hydraulic sensor and a dynamic hydraulic monitoring module.

Background

The liquid phase pressure switch is widely applied to pressure sensing of liquid media and identification of super-threshold signals in industry and life, and when the pressure of the liquid phase exceeds a threshold value set by the pressure switch, the pressure switch can timely respond to the switch, so that the pressure regulation and control effect is realized.

Existing pressure switches typically rely on deformation of a spring diaphragm or spring tube in the sensor to effect sensing of pressure. As disclosed in the chinese utility model with publication number CN 208478236U, when the liquid phase pressure reaches the deformation point of the spring diaphragm, the pressure sensor makes a switch judgment, but it can only make a switch judgment at a certain pressure value, and dynamic continuous monitoring cannot be realized.

Disclosure of Invention

The embodiment of the utility model provides a dynamic hydraulic sensor and a dynamic hydraulic monitoring module, which aim to solve the technical problem that the pressure sensor in the prior art cannot realize dynamic continuous monitoring.

To solve the above technical problem, in one aspect, an embodiment of the present utility model provides a dynamic hydraulic sensor, where the dynamic hydraulic sensor is electrically connected to at least one logic controller, and the dynamic hydraulic sensor includes:

the lower shell is provided with a containing groove and a liquid channel, the opening of the containing groove is upward, one end of the liquid channel is communicated with the outside, and the other end of the liquid channel is communicated with the containing groove;

an upper housing fixedly connected to the lower housing; and

the ceramic pressure sensing device is arranged in the accommodating groove and is fixed between the lower shell and the upper shell, the ceramic pressure sensing device comprises an annular main body, a deformation layer, a sensitive resistor and a circuit layer, an inner hole is defined in the annular main body, the bottom end of the inner hole is communicated with the liquid channel, the periphery of the deformation layer is fixedly connected with the annular main body and seals the top end of the inner hole, and a sealing structure is arranged between the bottom end surface of the annular main body and the bottom wall of the accommodating groove so as to seal the inner hole;

the sensing resistor and the circuit layer are arranged on the deformation layer, the sensing resistor is configured to change the resistance value of the sensing resistor along with the deformation of the deformation layer, and the sensing resistor outputs an electric signal to the logic controller through the circuit layer according to the resistance value of the sensing resistor, so that the logic controller outputs a corresponding pressure value according to the electric signal.

In some embodiments, the sealing structure is a first sealing ring, the bottom wall of the accommodating groove is provided with an annular convex rib, the annular convex rib is arranged along the circumferential direction of the first sealing ring, and the bottom surface of the first sealing ring is tightly attached to the bottom wall of the accommodating groove, so that the annular convex rib is tightly pressed on the bottom surface of the first sealing ring;

or, the sealing structure is a second sealing ring, the second sealing ring comprises a sealing ring main body and a protruding part integrated with the sealing ring main body, a circle of sealing concave part is arranged on the bottom wall of the accommodating groove along the circumferential direction of the liquid channel, the sealing ring main body is embedded into the sealing concave part, a first through hole is arranged on the sealing ring main body, the protruding part is arranged around the circumferential direction of the first through hole and protrudes upwards, the bottom end surface of the annular main body is tightly attached to the sealing ring main body, and the protruding part extends into the inner hole and the outer circumferential surface of the protruding part is tightly attached to the inner wall surface of the inner hole;

or, the sealing structure is a welding glue layer.

In some embodiments, the lower housing and the upper housing are connected in a manner selected from at least one of a screw connection, a weld, a snap connection, a pin connection, an adhesive connection, or a tight fit connection.

In some embodiments, the liquid channel is provided with an upper port which is exposed at the bottom wall of the accommodating groove, an annular wall surface is arranged on the bottom wall of the accommodating groove along the circumferential direction of the upper port, and the annular main body and/or the sealing structure is sleeved on the outer periphery of the annular wall surface.

In some embodiments, the top end surface of the lower housing is ultrasonically welded to the bottom end surface of the upper housing.

In some embodiments, the dynamic hydraulic sensor further comprises a screw, the lower housing and the upper housing are respectively provided with a first screw hole and a second screw hole which are longitudinally arranged, and the screw sequentially penetrates through the first screw hole and the second screw hole so that the lower housing and the upper housing are in screw connection.

In some embodiments, a first internal thread is arranged on the inner side wall of the accommodating groove, a first external thread is arranged on the outer side surface of the upper shell, and the upper shell and the lower shell are coaxially arranged and in threaded connection;

the cross sections of the upper shell and the lower shell are polygonal.

In some embodiments, the dynamic hydraulic sensor further includes a first plug pin, a first insertion hole is disposed on the lower housing, a circle of insertion slots are disposed on a side surface of the lower housing along a circumferential direction of the upper housing, the upper housing is embedded into the accommodating groove until abutting the ceramic pressure sensing device, and has a positioning position, in the positioning position, the insertion slots are flush with the first insertion hole, and the first plug pin is blocked into the insertion slots through the first insertion hole, so that the upper housing and the lower housing are in pin connection.

In some embodiments, the dynamic hydraulic sensor further comprises a second bolt, a second external thread is arranged on the outer side face of the lower shell, the upper shell is sleeved on the outer side face of the lower shell, a second internal thread is arranged on the inner wall face of the upper shell, the upper shell is provided with a second jack, the lower shell is provided with a plugging gap, the lower shell is in threaded connection with the upper shell and has a screwing position, the second jack is flush with the plugging gap in the screwing position, and the second bolt is plugged into the plugging gap through the second jack.

On the other hand, the embodiment of the utility model also provides a dynamic hydraulic monitoring module, which comprises:

the dynamic hydraulic sensor;

the logic controller is connected with the dynamic hydraulic sensor; and

and the display screen is connected with the logic controller.

The embodiment of the utility model has the following beneficial effects: the sensitive resistor of the dynamic hydraulic sensor is configured to change the resistance value along with the deformation of the deformation layer, and the sensitive resistor outputs an electric signal to the logic controller according to the resistance value, so that the logic controller outputs a corresponding pressure value according to the electric signal, and dynamic continuous monitoring is realized.

Drawings

FIG. 1 is a schematic diagram of a dynamic hydraulic monitoring module according to a first embodiment of the present utility model;

FIG. 2A is a schematic diagram of a first embodiment of a dynamic hydraulic sensor of the present utility model;

FIG. 2B is a schematic view of the installation of FIG. 2A;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2A;

FIG. 4 is a top view of FIG. 2A;

FIG. 5 is a schematic diagram of a second embodiment of a dynamic hydraulic sensor of the present utility model;

FIG. 6 is a cross-sectional view taken along B-B of FIG. 5;

FIG. 7 is a schematic diagram of a third embodiment of a dynamic hydraulic sensor of the present utility model;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7;

FIG. 9 is a schematic diagram of a fourth embodiment of a dynamic hydraulic sensor of the present utility model;

FIG. 10 is a cross-sectional view taken along D-D of FIG. 9;

FIG. 11 is a schematic structural view of a fifth embodiment of a dynamic hydraulic sensor of the present utility model;

FIG. 12 is a cross-sectional view taken along E-E of FIG. 11;

fig. 13 is another structural schematic diagram of a fifth embodiment of a dynamic hydraulic sensor of the present utility model.

Reference numerals illustrate:

100. a dynamic hydraulic sensor; 110. a lower housing; 111. a receiving groove; 1111. sealing the concave part; 1112. annular convex ribs; 112. a liquid channel; 1121. an upper port; 113. a first threaded hole; 114. a first internal thread; 115. an annular wall surface; 116. a first jack; 117. a second external thread; 118. a plugging notch; 120. an upper housing; 121. a second threaded hole; 122. a first external thread; 123. a slot; 124. a second internal thread; 125. a second jack; 126. an annular wall surface; 130. a ceramic pressure sensing device; 131. an annular body; 132. a deformation layer; 133. an inner bore; 134. a circuit layer; 135. a sensitive resistor; 150. a second seal ring; 151. a seal ring main body; 152. a protruding portion; 153. a first through hole; 160. a screw; 170a, a first bolt; 170b, a second bolt; 180. welding an adhesive layer; 190. a first seal ring; 200. a logic controller; 300. a display screen; 400. a power supply; 500. a water pipe; 510. and a three-way joint.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present utility model, are used only with reference to the drawings of the present utility model, and are not meant to be limiting in any way.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The description as it relates to "first", "second", etc. in the present utility model is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

As shown in fig. 1 to 13, an embodiment of the present utility model provides a dynamic hydraulic sensor 100, the dynamic hydraulic sensor 100 being electrically connected to at least one logic controller 200, the dynamic hydraulic sensor 100 including a lower housing 110, an upper housing 120, and a ceramic pressure sensing device 130.

The lower housing 110 has a receiving groove 111 and a liquid passage 112, the receiving groove 111 is opened upward, one end of the liquid passage 112 is connected to the outside (specifically, an external device or a water pipe 500 such as a household appliance) and the other end is connected to the receiving groove 111, as shown in fig. 2B, the liquid passage 112 is connected to a three-way joint 510 of the water pipe 500, and is also used for detecting the water pressure of the water pipe 500 in real time. The external liquid phase flows into the present hydraulic sensor via the liquid channel 112, and the liquid phase in the present utility model is understood to be a liquid substance, which may be a single compound or a solution. The upper housing 120 is fixedly connected with the lower housing 110, and the connection mode of the lower housing 110 and the upper housing 120 is at least one selected from screw connection, welding, buckling connection, pin connection, adhesive connection or tight fit connection. In addition, the upper case 120 may be provided with a through hole to facilitate connection of the sensing resistor 135 with the logic controller 200. Optionally, the materials of the lower housing 110 and the upper housing 120 are polymer materials, such as polyoxymethylene, ABS, polyamide, polyethylene, polycarbonate, polyester, polyphenylene oxide, and the like.

The ceramic pressure sensing device 130 is arranged in the accommodating groove 111 and is fixed between the lower shell 110 and the upper shell 120, the ceramic pressure sensing device 130 comprises an annular main body 131, a deformation layer 132, a sensitive resistor 135 and a circuit layer 134, an inner hole 133 is defined in the annular main body 131, the bottom end of the inner hole 133 is communicated with the liquid channel 112, so that liquid phase of the liquid channel 112 can enter the inner hole 133, the deformation layer 132 is subjected to pressure deformation, the periphery of the deformation layer 132 is fixedly connected with the annular main body 131 and seals the top end of the inner hole 133, and a sealing structure is arranged between the bottom end face of the annular main body 131 and the bottom wall of the accommodating groove 111 to seal the inner hole 133, so that pressure sensing errors caused by liquid phase leakage are avoided. The ceramic pressure sensor 130 has good consistency and good data linearity. The ceramic portion of ceramic pressure sensing device 130 may be selected from alumina ceramic, zirconia ceramic, and the like.

As shown in fig. 4, the sense resistor 135 and the circuit layer 134 are disposed on the deformation layer 132. The sensing resistor 135 is configured to change its resistance value according to the deformation of the deformation layer 132, and the sensing resistor 135 outputs an electrical signal to the logic controller 200 through the circuit layer 134 according to its resistance value, so that the logic controller 200 outputs a corresponding pressure value according to the electrical signal, thereby implementing dynamic persistence monitoring. The above-mentioned "electric signal" generally refers to a voltage signal, and the relationship between the voltage value and the pressure value of the liquid phase can be expressed by a linear fitting formula, and when an independent variable (voltage value) is inputted to the logic controller 200, the logic controller 200 calculates the dependent variable (pressure value) according to the linear fitting formula.

Specifically, the sense resistor 135 is a pressure sense resistor. Alternatively, the sensing resistor 135 is formed by printing a sensing resistor material on the upper surface of the deformation layer 132, and the sensing resistor material may be carbon paste.

In the first embodiment, as shown in fig. 2A to 4, the top end surface of the lower case 110 is ultrasonically welded to the bottom end surface of the upper case 120. The upper case 120 and the lower case 110 are melt-coupled using an ultrasonic welding technique. The embodiment can realize the integration of the upper shell 110 and the lower shell 110, has simple structure, convenient automatic production, high yield, good sealing effect and low cost.

Optionally, in this embodiment, the sealing structure is a second sealing ring 150, where the second sealing ring 150 includes a sealing ring main body 151 and a protruding portion 152 integrated with the sealing ring main body 151, a circle of sealing concave portion 1111 is provided on a bottom wall of the accommodating groove 111 along a circumferential direction of the liquid channel 112, the sealing ring main body 151 is embedded in the sealing concave portion 1111 for assembly positioning, a first through hole 153 is provided on the sealing ring main body 151, the protruding portion 152 is disposed around a circumferential direction of the first through hole 153 and protrudes upwards, a bottom end surface of the annular main body 131 is tightly attached to the sealing ring main body 151, the protruding portion 152 extends into the inner hole 133 and an outer peripheral surface thereof is tightly attached to an inner wall surface of the inner hole 133, so that the second sealing ring 150 performs assembly positioning on the ceramic pressure sensing device 130.

As shown in fig. 5 and 6, in the second embodiment, the dynamic hydraulic sensor 100 further includes a screw 160, and the lower housing 110 and the upper housing 120 are respectively provided with a first screw hole 113 and a second screw hole 121 arranged longitudinally, and the screw 160 sequentially penetrates the first screw hole 113 and the second screw hole 121 to screw-connect the lower housing 110 and the upper housing 120. The embodiment uses a mechanical assembly mode, has low requirements on assembly equipment, and has good reliability and low cost.

As shown in fig. 7 and 8, in the third embodiment, the inner side wall of the accommodating groove 111 is provided with a first internal thread 114, the outer side surface of the upper housing 120 is provided with a first external thread 122, the upper housing 120 and the lower housing 110 are coaxially arranged and are in threaded connection, and the upper housing 110 and the lower housing 110 can be screwed after adjusting the moment by the moment screwing device. The cross sections of the upper and lower cases 120 and 110 are polygonal, for example, hexagonal, and may be quadrangular, pentagonal, heptagonal, or the like. This embodiment is convenient for automated production, and through demarcating the required moment of screwing, can effectual improvement yields and production efficiency, and the connection effect is reliable, and sealed effect is good.

Further, in the present embodiment, the liquid channel 112 has an upper port 1121 exposed to the bottom wall of the accommodating groove 111, an annular wall surface 115 is provided on the bottom wall of the accommodating groove 111 along the circumferential direction of the upper port 1121, and the annular body 131 and/or the sealing structure is sleeved on the outer periphery of the annular wall surface 115 to perform positioning at the time of assembly.

As shown in fig. 9 and 10, in the fourth embodiment, the dynamic hydraulic sensor 100 further includes a first plug 170a, a first insertion hole 116 is provided in the lower housing 110, a ring of insertion holes 123 is provided on a side surface of the upper housing 120 along a circumferential direction of the upper housing 120, the upper housing 120 is inserted into the receiving groove 111 until abutting against the ceramic pressure sensing device 130 to have a positioning position, in which the insertion holes 123 are flush with the first insertion hole 116, and the first plug 170a is snapped into the insertion holes 123 through the first insertion hole 116 to pin-connect the upper housing 120 and the lower housing 110. The first bolt 170a can play a role in positioning and pressing, so that the integral connection of the sensor is firmer, and the anti-impact performance is better.

Optionally, the sealing structure in this embodiment is a solder paste layer 180. Specifically, the solder layer 180 is obtained by coating a solder paste between the bottom end surface of the annular body 131 and the bottom wall of the receiving groove 111 using a dispenser, and the solder paste 180 fixedly connects the ceramic pressure sensor 130 and the lower case 110 to form a pressure-receiving portion to improve the overall impact resistance and also to function as a seal. The weld glue layer 180 can withstand a pressure that is much greater than the impact pressure of the liquid phase, plus the pressure that the first latch 170a can withstand, while effectively preventing looseness generated during high frequency impacts.

Optionally, the first plug 170a has a connecting rod, and two plug posts parallel to each other and extending in the same direction are respectively disposed at two ends of the connecting rod. Accordingly, the number of first jacks 116 is also two. It should be appreciated that the above configuration is only one form of the first latch 170 a.

As shown in fig. 11 to 13, in the fifth embodiment, in order to reduce the volume and prevent the sealing performance of the sealing structure from being insufficient, the dynamic hydraulic sensor 100 further includes a second plug 170b, the outer side surface of the lower housing 110 is provided with a second external thread 117, the upper housing 120 is sleeved on the outer side surface of the lower housing 110, the inner wall surface of the upper housing 120 is provided with a second internal thread 124, the upper housing 120 is provided with a second insertion hole 125, the lower housing 110 is provided with a plugging gap 118, and the lower housing 110 and the upper housing 120 are screwed together and have screwing positions. Specifically, the inner periphery of the upper housing 120 is provided with a downwardly extending annular wall surface 126, and when the lower housing 110 and the upper housing 120 are rotated to the screwed position, the annular wall surface 126 abuts against the ceramic pressure sensor device 130 to constitute positioning. In the screwed position, the second jack 125 is flush with the insertion notch 118, and the second plug 170b is inserted into the insertion notch 118 through the second jack 125.

Optionally, the sealing structure in this embodiment is a first sealing ring 190, the bottom wall of the accommodating groove 111 is provided with an annular protruding rib 1112, and the annular protruding rib 1112 is arranged along the circumferential direction of the first sealing ring 190, and the bottom surface of the first sealing ring 190 is tightly attached to the bottom wall of the accommodating groove 111, so that the annular protruding rib 1112 is tightly pressed on the bottom surface of the first sealing ring 190. The first sealing ring 190 may be made of rubber or silicon-based material, and may be in the shape of a gasket or an O-ring.

The embodiment has the advantages of small and exquisite structure, compact space, definite positioning points, convenience for mass production, reliable structure, low cost and sealing effect.

In summary, the pressure monitoring device and the pressure monitoring method realize pressure monitoring in a dynamic liquid phase pressure environment, and the pressure can be observed in real time through the display module, so that the control of equipment is realized. Meanwhile, the utility model has simple installation process and reliable structure. In some preferred embodiments, the dynamic hydraulic sensor 100 can withstand 5MPa burst pressure and 100 ten thousand water hammer impacts, and the compression resistance and fatigue resistance are far higher than those of the standard household appliances. Meanwhile, the product cost is lower than the existing product cost through the optimization of the structure and the process, and the use cost is effectively reduced.

As shown in fig. 1, in an embodiment of the present utility model, a dynamic hydraulic pressure monitoring module is further provided, which includes a dynamic hydraulic pressure sensor 100, a logic controller 200, and a display screen 300. The specific structure of the dynamic hydraulic sensor 100 refers to the above embodiments, and since the dynamic hydraulic monitoring module adopts all the technical solutions of all the embodiments, at least the dynamic hydraulic monitoring module has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

Wherein the logic controller 200 is connected to the dynamic hydraulic pressure sensor 100. The display 300 is connected to the logic controller 200. The display screen 300 is configured to display a corresponding pressure value according to the pressure value output from the logic controller 200. Further, the dynamic hydraulic monitoring module further includes a power supply 400 to supply power to the logic controller 200.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.

Claims (10)

1. A dynamic hydraulic sensor electrically connected to at least one logic controller, comprising:

the lower shell is provided with a containing groove and a liquid channel, the opening of the containing groove is upward, one end of the liquid channel is communicated with the outside, and the other end of the liquid channel is communicated with the containing groove;

an upper housing fixedly connected to the lower housing; and

the ceramic pressure sensing device is arranged in the accommodating groove and is fixed between the lower shell and the upper shell, the ceramic pressure sensing device comprises an annular main body, a deformation layer, a sensitive resistor and a circuit layer, an inner hole is defined in the annular main body, the bottom end of the inner hole is communicated with the liquid channel, the periphery of the deformation layer is fixedly connected with the annular main body and seals the top end of the inner hole, and a sealing structure is arranged between the bottom end surface of the annular main body and the bottom wall of the accommodating groove so as to seal the inner hole;

the sensing resistor and the circuit layer are arranged on the deformation layer, the sensing resistor is configured to change the resistance value of the sensing resistor along with the deformation of the deformation layer, and the sensing resistor outputs an electric signal to the logic controller through the circuit layer according to the resistance value of the sensing resistor, so that the logic controller outputs a corresponding pressure value according to the electric signal.

2. The dynamic hydraulic sensor according to claim 1, wherein the sealing structure is a first sealing ring, the bottom wall of the accommodating groove is provided with an annular convex rib, the annular convex rib is arranged along the circumferential direction of the first sealing ring, and the bottom surface of the first sealing ring is tightly attached to the bottom wall of the accommodating groove, so that the annular convex rib is tightly pressed on the bottom surface of the first sealing ring;

or, the sealing structure is a second sealing ring, the second sealing ring comprises a sealing ring main body and a protruding part integrated with the sealing ring main body, a circle of sealing concave part is arranged on the bottom wall of the accommodating groove along the circumferential direction of the liquid channel, the sealing ring main body is embedded into the sealing concave part, a first through hole is arranged on the sealing ring main body, the protruding part is arranged around the circumferential direction of the first through hole and protrudes upwards, the bottom end surface of the annular main body is tightly attached to the sealing ring main body, and the protruding part extends into the inner hole and the outer circumferential surface of the protruding part is tightly attached to the inner wall surface of the inner hole;

or, the sealing structure is a welding glue layer.

3. The dynamic hydraulic sensor of claim 1, wherein the lower housing and the upper housing are connected in at least one selected from the group consisting of a screw connection, a weld, a snap connection, a pin connection, an adhesive connection, and a tight fit connection.

4. The dynamic hydraulic sensor according to claim 1, wherein the liquid channel has an upper port which is exposed to the bottom wall of the accommodating groove, an annular wall surface is provided on the bottom wall of the accommodating groove along the circumferential direction of the upper port, and the annular body and/or the sealing structure is sleeved on the outer periphery of the annular wall surface.

5. The dynamic hydraulic sensor of any one of claims 1 to 4, wherein a top end surface of the lower housing is ultrasonically welded to a bottom end surface of the upper housing.

6. The dynamic hydraulic sensor according to any one of claims 1 to 4, further comprising a screw, the lower housing and the upper housing being provided with a first screw hole and a second screw hole arranged longitudinally, respectively, the screw penetrating the first screw hole and the second screw hole in order to screw the lower housing and the upper housing.

7. The dynamic hydraulic sensor according to any one of claims 1 to 4, wherein a first internal thread is provided on an inner side wall of the accommodation groove, a first external thread is provided on an outer side surface of the upper housing, and the upper housing and the lower housing are coaxially provided and screwed;

the cross sections of the upper shell and the lower shell are polygonal.

8. The dynamic hydraulic sensor according to any one of claims 1 to 4, further comprising a first plug pin, wherein a first insertion hole is provided in the lower housing, a ring of insertion holes is provided in the lateral surface of the lower housing in the circumferential direction of the upper housing, the upper housing is inserted into the receiving groove until abutting the ceramic pressure sensor device to have a positioning position in which the insertion holes are flush with the first insertion hole, and the first plug pin is inserted into the insertion holes through the first insertion hole to connect the upper housing and the lower housing by pins.

9. The dynamic hydraulic sensor according to any one of claims 1 to 4, further comprising a second plug pin, wherein a second external thread is provided on an outer side surface of the lower housing, the upper housing is sleeved on an outer side surface of the lower housing, a second internal thread is provided on an inner wall surface of the upper housing, the upper housing is provided with a second insertion hole, the lower housing is provided with an insertion notch, the lower housing and the upper housing are screwed together and have a screwing position, in which the second insertion hole is flush with the insertion notch, and the second plug pin is inserted into the insertion notch through the second insertion hole.

10. A dynamic hydraulic monitoring module, comprising:

the dynamic hydraulic sensor according to any one of claims 1 to 9;

the logic controller is connected with the dynamic hydraulic sensor; and

and the display screen is connected with the logic controller.