CN213422487U

CN213422487U - Miniature precision pressure sensor

Info

Publication number: CN213422487U
Application number: CN202023009756.2U
Authority: CN
Inventors: 杜超
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-06-11
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a miniature precision pressure sensor, which comprises a pressure sensor shell, a pressure detection head is arranged at the right end of the pressure sensor shell, a UHMW-PE filler pad is bonded between the right side wall of the pressure sensor shell and a mounting ring on the pressure detection head, the mounting ring and the right side wall of the pressure sensor shell are fixedly mounted through bolts, a sealing sleeve is arranged between the circumferential outer wall of the pressure detection head and the inner wall of the pressure sensor shell, the sealing sleeve comprises a support ring and a CERP packing ring, this kind of miniature accurate pressure sensor leakproofness is high, has reduced cost of maintenance, and it is inconvenient to have solved traditional pressure sensor casing and dismantle, and each part device change takes a long time problem, has increased traditional pressure sensor's shock attenuation nature, has reduced inside each accurate device because outside collision or the damage that drops and lead to.

Description

Miniature precision pressure sensor

Technical Field

The utility model relates to a sensor technical field specifically is a miniature accurate pressure sensor.

Background

The pressure sensor uses monocrystalline silicon as a substrate, and adopts advanced ion implantation process and micro-machining process to manufacture a silicon sensitive element with a Wheatstone bridge and a precise mechanical structure. The measured pressure acts on the silicon sensitive element through the pressure interface, so that the linear conversion between the applied pressure and the output signal is realized, and the pressure is transmitted to a monitoring display screen connected with the control unit through the signal transmission line.

The detection head of the current miniature pressure sensor extends out of the shell, and due to the structure and the packaging process of the existing miniature pressure sensor, the sealing effect of the joint between the detection head and the shell is poor, water drops or oil enters the shell from the joint easily, so that the short circuit of devices inside the shell is caused, the service life of the pressure sensor is influenced, and the maintenance cost is increased. For this reason, improvements in miniature pressure sensors are desired.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model provides a miniature accurate pressure sensor to solve present pressure sensor who proposes in the above-mentioned background art and detect the head and stretch out the casing outside more, it is poor to detect the sealed effect of junction between head and the casing, inside water droplet or fluid enter into the casing from this junction easily, lead to the inside device short circuit of casing, influence pressure sensor's life, increase cost of maintenance's problem moreover.

In order to achieve the above object, the utility model provides a following technical scheme: a miniature precision pressure sensor comprises a pressure sensor shell, wherein the right end of the pressure sensor shell is provided with a pressure detection head, a UHMW-PE filler pad is bonded between the right side wall of the pressure sensor shell and the mounting ring on the pressure detection head, the mounting ring and the right side wall of the pressure sensor shell are fixedly mounted through bolts, the pressure detection head penetrates through the right side wall of the inner cavity of the pressure sensor shell, a sealing sleeve is arranged between the circumferential outer wall of the pressure detection head and the inner wall of the pressure sensor shell, the sealing sleeve comprises a support ring and a CERP packing ring, the side wall of the inner cavity of the pressure sensor shell is also provided with a wireless communication module and a microcontroller which are connected with a client end signal from left to right, the output end of the pressure detection head is connected with the input end of the microcontroller through a data line, and the output end of the microcontroller is connected with the input end of the wireless communication module through a data line.

Preferably, a damping soft sleeve is arranged between the pressure sensor shell and the sealing sleeve, between the microcontroller and the wireless communication module, and the soft sleeve wraps the pressure detection head, the microcontroller and the wireless communication module.

Preferably, the pressure sensor casing includes casing and lower casing, the bottom of going up the casing is opened there is last semicircle cavity, both sides homogeneous body shaping is connected with the inserted block around the bottom of going up the casing, the top of casing is opened down and is had semicircle cavity, both sides all opened the slot around the top of casing down, it forms the installation cavity with lower semicircle cavity to go up the semicircle cavity, the inner chamber of slot is inserted to the inserted block.

Preferably, a sealing gasket is arranged between the insert block and the slot.

Preferably, the material of the sealing gasket is chromium-nickel alloy steel.

Preferably, the soft sleeve is a rubber sleeve.

Preferably, the right side of the outer wall of the pressure detection head is connected with a dustproof sleeve through threads.

Preferably, the pressure sensor housing is made of a stainless steel material.

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

1. the UHMW-PE packing gasket is arranged between the outside of the pressure sensor shell and the pressure detection head mounting ring, and the sealing sleeve consisting of the support ring and the CERP packing ring is arranged between the pressure sensor shell and the pressure detection head, so that the sealing property between the pressure sensor shell and the connecting part of the pressure detection head is improved, water drops and oil liquid are effectively prevented from entering the pressure sensor shell, the service life of the miniature pressure sensor is prolonged, and the maintenance cost is reduced;

2. through the miniature pressure sensor casing that last casing and lower casing equipment formed, easy dismounting is swift, has shortened the time of changing each partial device maintenance in the miniature pressure sensor casing, has solved current miniature pressure sensor casing and has dismantled inconveniently, each partial device long problem of changing time.

3. Through increasing soft sleeve between pressure sensor casing and each inside device, increased current miniature pressure sensor's shock attenuation nature, reduced each inside precision device because outside collision or fall the damage that leads to.

Drawings

The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the pressure sensor housing of the present invention;

FIG. 3 is a schematic view of the upper housing structure of the present invention;

FIG. 4 is a schematic view of the lower housing structure of the present invention;

fig. 5 is a schematic view of the structure of the sealing sleeve of the present invention.

In the figure: the device comprises a pressure sensor shell 1, a pressure detection head 2, a microcontroller 3, a wireless communication module 4, a soft sleeve 5, an upper shell 6, a lower shell 7, an upper semicircular cavity 8, an insert block 9, a lower semicircular cavity 10, an insertion slot 11, a dust-proof sleeve 12, a sealing sleeve 13, a support ring 131, a CERP packing ring 132 and a packing pad 14 UHMW-PE.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1 to 5, the miniature precision pressure sensor of the present invention comprises a pressure sensor housing 1, wherein a pressure detection head 2 is disposed at the right end of the pressure sensor housing 1, a UHMW-PE packing pad 14 is bonded between the right side wall of the pressure sensor housing 1 and a mounting ring on the pressure detection head 2, the mounting ring is fixedly mounted on the right side wall of the pressure sensor housing 1 by bolts, the pressure detection head 2 penetrates through the right side wall of the inner cavity of the pressure sensor housing 1, a sealing sleeve 13 is disposed between the outer circumferential wall of the pressure detection head 2 and the inner wall of the pressure sensor housing 1, the sealing sleeve 13 comprises a support ring 131 and a CERP packing ring 132, a wireless communication module 4 and a microcontroller 3 connected with a client signal are further disposed on the inner cavity side wall of the pressure sensor housing 1 from left to right, the output end of the pressure detection head 2 is connected with the input end of the microcontroller 3 through a data line, and the output end of the microcontroller 3 is connected with the input end of the wireless communication module 4 through a data line.

A damping soft sleeve 5 is arranged between the pressure sensor shell 1 and the sealing sleeve 13, between the microcontroller 3 and between the pressure sensor shell and the wireless communication module 4, and the soft sleeve 5 wraps the pressure detection head 2, the microcontroller 3 and the wireless communication module 4. The soft sleeve 5 wraps the internal devices, so that the shock absorption of the traditional pressure sensor is improved, the damage of each internal precise device caused by external collision or falling is reduced, the pressure sensor shell 1 comprises an upper shell 6 and a lower shell 7, an upper semicircular cavity 8 is formed at the bottom of the upper shell 6, the front side and the rear side of the bottom of the upper shell 6 are respectively and integrally connected with an insert block 9, a lower semicircular cavity 10 is formed at the top of the lower shell 7, slots 11 are formed at the front side and the rear side of the top of the lower shell 7, the upper semicircular cavity 8 and the lower semicircular cavity 10 form an installation cavity, the insert block 9 is inserted into the inner cavity of the slot 11, a sealing gasket is arranged between the insert block 9 and the slot 11, and the pressure sensor shell 1 can be rapidly disassembled and assembled through the matching of the slot 11 and the insert block 9, so that the internal devices can be conveniently detected and maintained, the material of sealed pad is chromium-nickel alloy steel, soft sleeve 5 is the rubber sleeve, there is dirt proof boot 12 outer wall right side of pressure measurement head 2 through threaded connection, pressure sensor casing 1 is made by stainless steel material.

This device is in specific use, dirt proof boot 12 under the staff's knob, later install the position that needs detected with 2 knobs of pressure detection head on this device, when pressure change, the action of the silicon sensing element in the pressure detection head 2, and pressure detection head 2 converts the signal of silicon sensing element action into digital signal and exports for controller 3, microcontroller 3 is to the digital signal analysis of receiving, transmit after the demodulation and give wireless communication module 4, because wireless communication module 4 passes through wireless signal with the monitoring display screen and establishes communication connection, wireless communication module 4 transmits pressure signal for the monitoring display screen demonstration this moment.

Other structures of a miniature precision pressure sensor described in this embodiment are disclosed in the prior art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.

Claims

1. A miniature precision pressure sensor, includes pressure sensor casing (1), its characterized in that: a pressure detection head (2) is arranged at the right end of the pressure sensor shell (1), an UHMW-PE filler pad (14) is bonded between the right side wall of the pressure sensor shell (1) and an installation ring on the pressure detection head (2), the installation ring and the right side wall of the pressure sensor shell (1) are fixedly installed through bolts, and the pressure detection head (2) penetrates through the right side wall of an inner cavity of the pressure sensor shell (1);

a sealing sleeve (13) is arranged between the circumferential outer wall of the pressure detection head (2) and the inner wall of the pressure sensor shell (1), and the sealing sleeve (13) comprises a support ring (131) and a CERP packing ring (132);

the side wall of the inner cavity of the pressure sensor shell (1) is further provided with a wireless communication module (4) and a microcontroller (3) which are in signal connection with a client side from left to right, the output end of the pressure detection head (2) is connected with the input end of the microcontroller (3) through a data line, and the output end of the microcontroller (3) is connected with the input end of the wireless communication module (4) through a data line;

be provided with absorbing soft sleeve (5) between pressure sensor casing (1) and seal cover (13), microcontroller (3) and wireless communication module (4), and soft sleeve (5) parcel pressure detection head (2), microcontroller (3) and wireless communication module (4).

2. A miniature precision pressure sensor as claimed in claim 1, wherein: pressure sensor casing (1) includes casing (6) and lower casing (7), it has last semicircle cavity (8) to go up the bottom of casing (6) and open, the equal integrated into one piece in both sides is connected with inserted block (9) around the bottom of going up casing (6), open at the top of casing (7) down has semicircle cavity (10), slot (11) have all been opened to both sides around the top of casing (7) down, last semicircle cavity (8) form the installation cavity with lower semicircle cavity (10), the inner chamber of slot (11) is inserted in inserted block (9).

3. A miniature precision pressure sensor as set forth in claim 2, wherein: and a sealing gasket is arranged between the inserting block (9) and the inserting groove (11).

4. A miniature precision pressure sensor as set forth in claim 3, wherein: the sealing gasket is made of chromium-nickel alloy steel.

5. A miniature precision pressure sensor as claimed in claim 1, wherein: the soft sleeve (5) is a rubber sleeve.

6. A miniature precision pressure sensor according to any of claims 1-5, wherein: the right side of the outer wall of the pressure detection head (2) is connected with a dustproof sleeve (12) through threads.

7. A miniature precision pressure sensor according to any of claims 1-5, wherein: the pressure sensor shell (1) is made of stainless steel materials.