CN111928995A

CN111928995A - Pressure sensor for detecting pipeline liquid pressure

Info

Publication number: CN111928995A
Application number: CN202011099912.0A
Authority: CN
Inventors: 赵建立; 张仁政; 顾长杰
Original assignee: Nanjing Wotian Technology Co ltd
Current assignee: Nanjing wotian Technology Co.,Ltd.
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2020-11-13
Anticipated expiration: 2040-10-15
Also published as: CN111928995B

Abstract

The invention discloses a pressure sensor for detecting the pressure of pipeline liquid, which comprises a pipe body, wherein a detachable conducting pipe is fixedly arranged at the upper side of the pipe body, a detachable sensor body for detecting the pressure is fixedly arranged at the upper end of the conducting pipe, when the sensor body is mounted or dismounted, the wrench is taken down, one end of the wrench is inserted into the wrench slot, the transmission pipe can be pulled to be locked, fixed or dismounted, then with the sensor body through the chock plug ann insert realize fixed mounting in the last port of conduction pipe inboard, make its installation or dismantle more convenient, need not to carry the mounting tool in addition, the diaphragm of conduction pipe lower extreme extrudees the movable rod under liquid pressure, thereby the movable rod then extrudees the diaphragm of upside and gives the pressure conduction and realize pressure detection for detecting the head, thereby avoids receiving the problem that pollutes and influence the detection data accuracy because of detecting head and liquid direct contact.

Description

Pressure sensor for detecting pipeline liquid pressure

Technical Field

The invention relates to the technical field of pressure sensors, in particular to a pressure sensor for detecting the pressure of pipeline liquid.

Background

The pressure sensor is a device or a device which can sense pressure signals and can convert the pressure signals into usable output electric signals according to a certain rule, and the pressure sensor for detecting the liquid pressure of the pipeline is also widely applied to pipeline transmission to realize real-time monitoring of the hydraulic pressure inside the pipeline and guarantee normal operation of the pipeline.

The applicant of the invention finds that when the existing pressure sensor is installed on a pipeline, the existing pressure sensor is often required to be locked and fixed through a wrench, so that when the sensor is disassembled or installed, a specific tool is required to be carried, the disassembly or the installation is inconvenient, liquid leakage occurs when liquid exists inside the pipeline, the liquid inside the pipeline pollutes a detection head of the sensor, and the detection data is inaccurate.

Disclosure of Invention

The invention aims to provide a pressure sensor for detecting the pressure of pipeline liquid, aiming at solving the problems that the existing pressure sensor is inconvenient to disassemble or install, liquid leakage occurs during the assembly or disassembly, and the detection data is inaccurate as the liquid in the pipeline pollutes the detection head of the sensor.

The invention is realized by the following steps:

a pressure sensor for detecting the pressure of liquid in pipeline is composed of a main body with a detachable conducting tube, a detachable sensor body for detecting the pressure, a power supply connector, a fixing sleeve, a self-sealing mechanism for automatically sealing said sleeve without external force, several spanner clamping platforms arranged uniformly on the outside of said conducting tube, and several spanner slots on the surface of said spanner clamping platforms, several rod-shaped spanners on the outside of said conducting tube, a movable rod moving up and down, pressing plates at both ends of said movable rod, and diaphragms close to said pressing plates, the lower end of the sensor body is provided with a detection head which is arranged in a way of being clung to the diaphragm on the upper side, when the sensor body is installed or disassembled, the transmission pipe can be pulled to be locked, fixed or disassembled by taking down the wrench and inserting one end of the wrench into the wrench slot, then the sensor body is inserted into the inner side of the upper port of the conduction pipe through the plug head to realize fixed installation, so that the installation or disassembly is more convenient without carrying an installation tool additionally, the movable rod is extruded under the pressure of liquid through the diaphragm at the lower end of the conduction pipe, the movable rod extrudes the diaphragm at the upper side so as to transmit the pressure to the detection head to realize pressure detection, meanwhile, the pollution caused by the direct contact of the detection head and the liquid is avoided, the problem of influencing the accuracy of the detection data is avoided, meanwhile, the automatic plugging of the fixed sleeve can be realized when the conduction pipe is detached through the arranged self-sealing mechanism, so that the problem of leakage of the liquid in the fixed sleeve is solved.

Furthermore, a second guide hole communicated with the pipeline is formed in the inner side of the fixed sleeve and close to the lower end of the fixed sleeve, a plugging groove is formed in the lower end of the second guide hole, the self-sealing mechanism is movably guided through the second guide hole, and the self-sealing mechanism is plugged and matched through the plugging groove.

Further, from the stand pipe that the mechanism includes activity from top to bottom, the stand pipe alternates in the inboard of second guiding hole, and the fixed closing cap that blocks in the shutoff inslot that is provided with of lower extreme of stand pipe, the position that the outside of stand pipe side is close to the closing cap is provided with a plurality of inlet, and the upper end of stand pipe is provided with the bellied annular in the outside and hangs the platform, the position cover that the outside of stand pipe is located between the upper end of annular string platform and second guiding hole is equipped with the elastic sleeve, when dismantling the conduction pipe, thereby it drives the stand pipe rebound to move up to make the closing cap card realize sealed shutoff in the shutoff inslot to push up annular string platform through the elastic sleeve under the condition of no external force.

Further, the lower end of the conduction pipe is provided with a fixed screw head screwed on the inner side of the upper port of the fixed sleeve, a check ring is arranged at the position, close to the fixed screw head, of the conduction pipe, a clamping seat for clamping the wrench is fixedly arranged on the outer side of the conduction pipe, a clamping groove matched with the wrench is formed in the clamping seat, and the wrench is prevented from falling and losing through clamping of the clamping seat.

Further, the inboard center of conduction pipe is provided with first guiding hole, and the upper and lower both ends that the inboard of conduction pipe is located first guiding hole all are provided with the groove of stepping down, and the upper and lower both ends of conduction pipe all are provided with the mounting groove that is used for installing the diaphragm, and the inboard of mounting groove is fixed to be provided with and compresses tightly fixed clamping ring to the diaphragm, realizes moving about the direction to the movable rod through first guiding hole to realize compressing tightly fixedly to the diaphragm through the clamping ring that sets up.

Further, the lower extreme of sensor body is provided with the chock plug of inserting on the conduction pipe, and the fixed retainer plate that is provided with of one end that the sensor body is close to the chock plug, detects the head and fixes on the chock plug, and the inside is provided with the battery in the upper port of sensor body, and the sensor body is inserted in the last port of conduction pipe inboard through the chock plug to realize fixed locking through the screw on the retainer plate, supply power temporarily when can realizing the outage through the battery that sets up simultaneously.

Furthermore, the lower extreme that the power supply connects is provided with and twists the inboard fixed spiral shell head of port on the sensor body soon, and the right side that the power supply connects is close to the upper end and fixedly is provided with and wears the leader, the inboard of wearing the leader is worn and is drawn the cable, the right-hand member of wearing the leader is provided with a plurality of and is circumference form align to grid's compressing strip, and the outside cover of wearing the leader is equipped with and carries out the lock sleeve that overlaps tightly to compressing strip, the low side of doing of lock sleeve is twisted soon on the external screw thread that threads outside the leader, through wearing the leader realize the threading to the cable, thereby it makes it to compressing strip extrusion compressing strip and locking it to prevent that the cable from receiving external force to pull the condition that appears breaking from inside through twisting the lock sleeve.

Further, the cable is electrically connected with the battery, the battery is electrically connected with the sensor body, power is supplied through the cable, and the battery is electrified to store power and supply power temporarily.

Compared with the prior art, the invention has the beneficial effects that:

when the sensor body is mounted or dismounted, the sensor body can be pulled to be locked, fixed or dismounted by taking down the wrench and inserting one end of the wrench into the wrench slot, the movable rod is extruded under the liquid pressure through the diaphragm at the lower end of the conduction pipe, the movable rod extrudes the diaphragm at the upper side to transmit the pressure to the detection head to realize pressure detection, the problem that the detection head is polluted due to direct contact with the liquid is avoided, the accuracy of detection data is prevented from being influenced, and meanwhile, the problem that the internal liquid leaks due to automatic blocking of the fixed sleeve can be prevented by the aid of the arranged self-sealing mechanism when the conduction pipe is dismounted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a perspective view of a pressure sensor for detecting fluid pressure in a pipeline according to the present invention;

FIG. 2 is a schematic diagram of a pressure sensor for detecting fluid pressure in a pipeline according to the present invention;

FIG. 3 is a schematic view of a self-sealing mechanism of the pressure sensor for detecting the pressure of the liquid in the pipeline according to the present invention;

FIG. 4 is a schematic view of a conductive pipe of the pressure sensor for detecting the pressure of the liquid in the pipeline according to the present invention;

FIG. 5 is a cross-sectional view of a conductive pipe of a pressure sensor for detecting fluid pressure in a pipeline according to the present invention;

FIG. 6 is a schematic diagram of a movable rod of the pressure sensor for detecting the pressure of the liquid in the pipeline according to the present invention;

FIG. 7 is a schematic diagram of a sensor body of a pressure sensor for detecting the pressure of fluid in a pipeline according to the present invention;

fig. 8 is a schematic diagram of a power supply connector of the pressure sensor for detecting the pressure of the liquid in the pipeline according to the present invention.

In the figure: 1. a power supply connector; 110. a locking sleeve; 120. fixing the screw head; 130. threading a guide pipe; 140. an external thread; 150. compressing the strips; 160. a cable; 2. a sensor body; 21. a stationary ring; 22. a plug head; 23. a detection head; 3. a conducting tube; 31. a wrench clamping table; 32. a retainer ring; 33. fixing the screw head; 34. a wrench slot; 35. a wrench; 36. a card holder; 37. mounting grooves; 38. a yielding groove; 39. a first guide hole; 4. a pipeline; 41. fixing a sleeve; 42. a second guide hole; 43. plugging the groove; 5. a self-sealing mechanism; 51. a guide tube; 52. sealing the cover; 53. an annular hanging table; 54. an elastic sleeve; 55. a liquid inlet; 6. pressing a ring; 7. a membrane; 8. a movable rod; 81. pressing a plate; 9. a battery.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Embodiment 1, referring to fig. 1, fig. 2, fig. 4, fig. 6 and fig. 7 specifically, a pressure sensor for detecting a liquid pressure in a pipeline includes a pipe body 4, a detachable conducting pipe 3 is fixedly disposed on an upper side of the pipe body 4, a detachable sensor body 2 for detecting a pressure is fixedly disposed on an upper end of the conducting pipe 3, a power supply connector 1 is fixedly disposed on an upper end of the sensor body 2, a fixing sleeve 41 is fixedly disposed on an upper side surface of the pipe body 4, a self-sealing mechanism 5 for self-sealing the fixing sleeve 41 without an external force is disposed inside the fixing sleeve 41, a plurality of wrench clamping platforms 31 are uniformly arranged in a circumferential manner on an outer side of the conducting pipe 3, a circular wrench slot 34 is disposed on a surface of the wrench clamping platform 31, a plurality of rod-shaped wrenches 35 are clamped on an outer side surface of the conducting pipe 3, a movable rod 8 capable of moving up and down is disposed in a, the upper end and the lower end of the movable rod 8 are respectively provided with a pressing plate 81, the upper end port and the lower end port of the conduction tube 3 are respectively provided with a diaphragm 7 which is tightly attached to the pressing plates 81 at the two ends of the movable rod 8, the lower end of the sensor body 2 is provided with a detection head 23, and the detection head 23 is tightly attached to the upper diaphragm 7, when the sensor body 2 is installed or disassembled, the conduction tube 3 can be pulled to be locked and fixed or disassembled by taking off a wrench 35 and inserting one end of the wrench into a wrench slot 34, then the sensor body 2 is inserted into the inner side of the upper port of the conduction tube 3 through a plug 22 to realize fixed installation, so that the installation or disassembly is more convenient, no additional installation tool is needed, the movable rod 8 is extruded under the liquid pressure through the diaphragm 7 at the lower end of the conduction tube 3, and the movable rod 8 extrudes the diaphragm 7 at the upper side so as to transmit the pressure to the, meanwhile, the problem that the detection head 23 is polluted due to direct contact with liquid is avoided, the accuracy of detection data is prevented from being influenced, and meanwhile, the problem that the leakage of the liquid inside the fixed sleeve 41 is prevented by automatically plugging the fixed sleeve 41 when the conduction tube 3 is detached through the arranged self-sealing mechanism 5 is solved.

Specifically, referring to fig. 2, a second guiding hole 42 communicated with the pipeline 4 is disposed near the lower end of the inner side of the fixing sleeve 41, and a plugging groove 43 is disposed at the lower end of the second guiding hole 42, so that the self-sealing mechanism 5 is movably guided through the second guiding hole 42, and is plugged and matched with the self-sealing mechanism 5 through the plugging groove 43.

Specifically, referring to fig. 3, the self-sealing mechanism 5 includes a guide tube 51 capable of moving up and down, the guide tube 51 is inserted into the inner side of the second guide hole 42, a sealing cover 52 clamped in the sealing groove 43 is fixedly disposed at the lower end of the guide tube 51, a plurality of liquid inlets 55 are disposed on the outer side of the guide tube 51 near the sealing cover 52, an annular hanging table 53 protruding outward is disposed at the upper end of the guide tube 51, an elastic sleeve 54 is sleeved at a position between the annular hanging table 53 and the upper end of the second guide hole 42 on the outer side of the guide tube 51, and when the conductive tube 3 is disassembled, the annular hanging table 53 is pushed by the elastic sleeve 54 to drive the guide tube 51 to move upward so that the sealing cover 52 is clamped in the sealing groove 43 to achieve sealing and sealing without external force.

Specifically, referring to fig. 4, a fixing screw head 33 screwed on the inner side of the upper port of the fixing sleeve 41 is disposed at the lower end of the conducting tube 3, a retainer ring 32 is disposed at a position of the conducting tube 3 close to the fixing screw head 33, a clamping seat 36 for clamping the wrench 35 is fixedly disposed at the outer side of the conducting tube 3, a clamping groove matched with the wrench 35 is disposed on the clamping seat 36, and the wrench 35 is clamped by the clamping seat 36 to prevent the wrench 35 from falling and losing.

Specifically, referring to fig. 5, a first guide hole 39 is formed in the center of the inner side of the conducting tube 3, abdicating grooves 38 are formed in the upper end and the lower end of the inner side of the conducting tube 3, which are located in the first guide hole 39, mounting grooves 37 are formed in the upper end and the lower end of the conducting tube 3, which are used for mounting the diaphragm 7, a pressing ring 6 for pressing and fixing the diaphragm 7 is fixedly arranged in the inner side of the mounting groove 37, the movable rod 8 is movably guided through the first guide hole 39, and the diaphragm 7 is pressed and fixed through the arranged pressing ring 6.

Specifically, referring to fig. 7, a plug 22 inserted into the conducting tube 3 is disposed at the lower end of the sensor body 2, a fixing ring 21 is fixedly disposed at one end of the sensor body 2 close to the plug 22, a detection head 23 is fixed on the plug 22, a battery 9 is disposed at the inner side of an upper port of the sensor body 2, the sensor body 2 is inserted into the inner side of the upper port of the conducting tube 3 through the plug 22, fixing and locking are achieved through screws on the fixing ring 21, and temporary power supply during power failure can be achieved through the battery 9.

Specifically, referring to fig. 8, a fixed screw head 120 screwed on the inner side of the upper port of the sensor body 2 is disposed at the lower end of the power supply connector 1, a penetrating tube 130 is fixedly disposed on the right side of the power supply connector 1 near the upper end, a cable 160 penetrates through the penetrating tube 130, a plurality of pressing strips 150 uniformly arranged in a circumferential shape are disposed at the right end of the penetrating tube 130, a locking sleeve 110 for tightly sleeving the pressing strips 150 is sleeved on the outer side of the penetrating tube 130, the lower end of the locking sleeve 110 is screwed on the external threads 140 on the outer side of the penetrating tube 130, the penetrating tube 130 is used for penetrating the cable 160, the locking sleeve 110 is screwed to move towards the pressing strips 150 so as to press the pressing strips 150 and lock the pressing strips 150, so that the cable 160 is prevented from being broken from the inside due to external force, the cable 160 is electrically connected with the battery 9, and the battery 9 is electrically connected with the sensor body 2, the power supply is performed through the cable 160, and the power storage and temporary power supply are performed through the battery 9.

The working principle is that when the sensor body 2 is installed, the wrench 35 is taken down, one end of the wrench is inserted into the wrench inserting groove 34, the conduction pipe 3 is pulled to be locked and fixed on the fixing sleeve 41, then the sensor body 2 is inserted into the upper end opening of the conduction pipe 3 through the plug head 22 and is locked and fixed through the screw on the fixing ring 21, when hydraulic pressure in the pipeline 4 is detected, the diaphragm 7 at the lower end of the conduction pipe 3 extrudes the movable rod 8 under the liquid pressure, the movable rod 8 extrudes the diaphragm 7 at the upper side so as to transmit the pressure to the detection head 23 to realize pressure detection, and when the conduction pipe 3 is disassembled, the elastic sleeve 54 pushes the annular hanging table 53 to drive the guide pipe 51 to move upwards under the condition of no external force so that the sealing cover 52 is clamped in the sealing groove 43 to realize sealing and sealing to prevent liquid leakage.

The device obtained by the design can basically meet the requirements that the existing pressure sensor is convenient to disassemble or install, liquid leakage does not occur in the process of assembling or disassembling, and liquid in the pipeline does not pollute the detection head of the sensor, but the designer further improves the device by further perfecting the function of the device.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pipeline liquid pressure detects uses pressure sensor, includes body (4), its characterized in that: the upper side of the pipe body (4) is fixedly provided with a detachable conducting pipe (3), the upper end of the conducting pipe (3) is fixedly provided with a detachable sensor body (2) for pressure detection, the upper end of the sensor body (2) is fixedly provided with a power supply connector (1), the upper side of the pipe body (4) is fixedly provided with a fixed sleeve (41), the inner side of the fixed sleeve (41) is provided with a self-sealing mechanism (5) for automatically sealing the fixed sleeve (41) under the condition of no external force, the outer side of the conducting pipe (3) is provided with a plurality of wrench clamping tables (31) which are uniformly arranged in a circumferential shape, the surface of each wrench clamping table (31) is provided with a circular wrench slot (34), the outer side of the conducting pipe (3) is clamped with a plurality of rod-shaped wrenches (35), the center of the inner side of the conducting pipe (3) is provided with a movable rod (8, and the upper and lower both ends of movable rod (8) all are provided with clamp plate (81), the upper and lower both ends port department of conduction pipe (3) all is provided with diaphragm (7) of hugging closely with clamp plate (81) at movable rod (8) both ends, the lower extreme of sensor body (2) is provided with detects head (23), and detects head (23) and hug closely the setting with diaphragm (7) of upside.

2. The pressure sensor for detecting the liquid pressure in a pipeline according to claim 1, wherein a second guide hole (42) communicating with the pipeline (4) is provided inside the fixing sleeve (41) near the lower end, and a blocking groove (43) is provided at the lower end of the second guide hole (42).

3. The pressure sensor for detecting the liquid pressure in the pipeline according to claim 2, wherein the self-sealing mechanism (5) comprises a guide tube (51) which can move up and down, the guide tube (51) is inserted into the inner side of the second guide hole (42), a sealing cover (52) clamped in the sealing groove (43) is fixedly arranged at the lower end of the guide tube (51), a plurality of liquid inlets (55) are arranged at positions, close to the sealing cover (52), on the outer side of the guide tube (51), an annular hanging table (53) protruding outwards is arranged at the upper end of the guide tube (51), and an elastic sleeve (54) is sleeved at a position, between the annular hanging table (53) and the upper end of the second guide hole (42), on the outer side of the guide tube (51).

4. The pressure sensor for detecting the liquid pressure in the pipeline according to claim 3, wherein a fixing screw head (33) screwed inside the upper port of the fixing sleeve (41) is disposed at the lower end of the conducting tube (3), a retainer ring (32) is disposed at a position of the conducting tube (3) close to the fixing screw head (33), a clamping seat (36) for clamping the wrench (35) is fixedly disposed at the outer side of the conducting tube (3), and a clamping groove matched with the wrench (35) is disposed on the clamping seat (36).

5. The pressure sensor for detecting the pressure of the liquid in the pipeline according to claim 4, wherein a first guide hole (39) is formed in the center of the inner side of the conducting pipe (3), abdicating grooves (38) are formed in the upper end and the lower end of the inner side of the conducting pipe (3) which are located in the first guide hole (39), mounting grooves (37) used for mounting the diaphragm (7) are formed in the upper end and the lower end of the conducting pipe (3), and a pressing ring (6) used for pressing and fixing the diaphragm (7) is fixedly arranged on the inner side of the mounting grooves (37).

6. The pressure sensor for detecting the liquid pressure in the pipeline according to claim 5, wherein a plug (22) inserted on the conducting pipe (3) is arranged at the lower end of the sensor body (2), a fixing ring (21) is fixedly arranged at one end of the sensor body (2) close to the plug (22), the detecting head (23) is fixed on the plug (22), and a battery (9) is arranged at the inner side of the upper port of the sensor body (2).

7. The pressure sensor for detecting the liquid pressure in the pipeline according to claim 6, wherein a fixed screw head (120) screwed on the inner side of the upper port of the sensor body (2) is arranged at the lower end of the power supply connector (1), a threading tube (130) is fixedly arranged on the right side of the power supply connector (1) close to the upper end, a cable (160) is threaded on the inner side of the threading tube (130), a plurality of pressing strips (150) which are uniformly arranged in a circumferential shape are arranged at the right end of the threading tube (130), a locking sleeve (110) for tightly sleeving the pressing strips (150) is sleeved on the outer side of the threading tube (130), and the lower end of the locking sleeve (110) is screwed on an external thread (140) on the outer side of the threading tube (130).

8. The pressure sensor for detecting the pressure of liquid in a pipeline according to claim 7, wherein the cable (160) is electrically connected to the battery (9), and the battery (9) is electrically connected to the sensor body (2).