CN218994604U

CN218994604U - Differential pressure sensor used in ventilation system

Info

Publication number: CN218994604U
Application number: CN202223423648.9U
Authority: CN
Inventors: 屈丹丹; 屈莉莉
Original assignee: Zhongdan Hubei Technology Co ltd
Current assignee: Zhongdan Hubei Technology Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-05-09
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a differential pressure sensor used in a ventilation system, which comprises a mounting plate, wherein the top wall of the mounting plate is provided with a differential pressure sensor body through screws, and a high-pressure air inlet and a low-pressure air inlet of the differential pressure sensor body are communicated with a sealing component; the differential pressure sensor used in the ventilation system drives the corresponding damper and the corresponding spring to be stressed simultaneously through the fact that wind in the ventilation pipe enters the connecting pipe to shake vertically or horizontally, so that shaking force of the connecting pipe is absorbed and buffered, the connecting pipe is arranged linearly to reduce bending positions, shaking states of the connecting pipe under the action of pressure are buffered to a greater extent, meanwhile, the connecting pipe is arranged linearly, wind in the connecting pipe is enabled to be smoother, shaking of the connecting pipe is reduced, and the risk of detachment caused by the connecting position of the connecting pipe and the ventilation pipe is avoided.

Description

Differential pressure sensor used in ventilation system

Technical Field

The utility model relates to the technical field of differential pressure sensors, in particular to a differential pressure sensor used in a ventilation system.

Background

The differential pressure sensor is a sensor for measuring the difference between two pressures, is generally used for measuring the differential pressure between the front end and the rear end of a certain device or component, has very wide application in a ventilation system, and mainly connects a high-pressure air inlet and a low-pressure air inlet with an upper air inlet and a lower air inlet of a measured pipeline respectively, and wind in the measured pipeline firstly enters the high-pressure air inlet at a second time through a connecting pipe, then enters the low-pressure air inlet through the connecting pipe, and then enters the differential pressure sensor to detect the differential pressure.

The utility model discloses a differential pressure sensor in patent number CN202220190336.9, which comprises a housin, casing one side is fixed to be provided with the air inlet, casing one end movable mounting is kept away from to the air inlet has the connecting pipe that is used for connecting the pipeline of survey and air inlet, the casing is close to air inlet one side and installs the buffer assembly who is used for stabilizing the connecting pipe, casing is kept away from air inlet one side and is fixedly provided with the circuit that is used for connecting the control instrument, is connected high-pressure air inlet and low-pressure air inlet with the upper air inlet department and the lower air inlet department of survey pipeline respectively, and the in-process that the wind passes through the connecting pipe, the buffer assembly of installing on the casing has certain spacing cushioning effect to the activity of connecting pipe, has avoided ventilation in-process because wind-force is too big to cause the connecting pipe violently to rock, has reduced the connecting pipe and has become flexible the possibility that leads to partial gas leakage with the junction of survey pipeline and air inlet, is favorable to the detection to going on.

The device has certain disadvantages when in use: when the wind power atmospheric pressure that detects in pipeline upper wind gap department enters into the connecting pipe is great, wind-force can promote the connecting pipe in the twinkling of an eye in entering into the connecting pipe and rock, drive stop collar, slider activity after the connecting pipe atress, the spring follows the atress, with two springs that the slider is fixed, one is compressed the opposite side and is stretched, under spring self elastic action, the spring can last compressing tensile reciprocating motion, can drive simultaneously and move at slider, stop collar, connecting pipe, the connecting pipe still can last rocking after receiving spring and wind power, can bring the risk that breaks away from for connecting pipe and the position of being detected the pipeline connection.

To this end, the present utility model provides a differential pressure sensor for use in a ventilation system to solve the above-mentioned problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a differential pressure sensor used in a ventilation system, and solves the problems.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the differential pressure sensor comprises a mounting plate, wherein the top wall of the mounting plate is provided with a differential pressure sensor body through screws, a high-pressure air inlet and a low-pressure air inlet of the differential pressure sensor body are communicated with sealing assemblies, the sealing assemblies are communicated with limiting buffer assemblies, and the sealing assemblies are communicated with the same ventilating pipe;

the limiting buffer assembly comprises a protection frame, a plurality of groups of dampers are symmetrically arranged on the inner wall of the protection frame, two dampers are arranged in each group, springs are arranged on the outer wall of each damper, semicircular clamping blocks are fixedly connected to adjacent ends of the dampers in each group, the semicircular clamping blocks are attached to the sealing assembly, the bottom wall of the protection frame is fixedly connected with the top wall of the mounting plate, and the dampers in each group are transversely and longitudinally staggered in sequence.

Further, sealing component includes two connecting pipes, and two connecting pipes all are linked together with the ventilation pipe, and two connecting pipe outer walls all laminate with the semicircular fixture block inner wall that corresponds.

Through above-mentioned technical scheme, semi-circular fixture block and connecting pipe are under the state of admitting air mutually supporting.

Furthermore, the left ends of the two connecting pipes are communicated with a connector through a leakage-proof bearing, and the high-pressure air inlet and the low-pressure air inlet of the differential pressure sensor body are communicated with a communicating pipe.

Through above-mentioned technical scheme, communicating pipe is mainly used for accepting the effect of admitting air.

Furthermore, the side wall of the communicating pipe is provided with annular spiral grooves, and the left end of the connector is fixedly connected with annular spiral blocks matched with the annular spiral grooves.

Through the technical scheme, the annular screw block and the annular screw groove are matched for use, so that the disassembly and assembly are more convenient.

Further, the annular screw blocks are mutually screwed with the corresponding annular screw grooves.

Further, the inner walls of the communicating pipes are respectively communicated with a funnel-shaped joint pipe, and the outer walls of the funnel-shaped joint pipes are attached to the inner walls of the connectors.

Through above-mentioned technical scheme, funnel formula adapter promotes the leakproofness of connector and communicating pipe.

Further, the funnel-shaped faucet tube is made of rubber, a connecting circuit is electrically connected to the left wall of the differential pressure sensor body, and the connecting circuit is communicated with an external control instrument.

Through above-mentioned technical scheme, funnel formula adapter uses the rubber material, and accessible human intervention can put into in the connector.

Advantageous effects

The utility model provides a differential pressure sensor used in a ventilation system. Compared with the prior art, the method has the following beneficial effects:

(1) The pressure difference sensor used in the ventilation system drives the corresponding damper and the corresponding spring to be stressed simultaneously through the fact that wind in the ventilation pipe enters the connecting pipe to shake vertically or horizontally, so that shaking force of the connecting pipe is absorbed and buffered, the connecting pipe is in a straight line arrangement to reduce bending position, shaking state of the connecting pipe under the action of pressure is buffered to a greater extent, meanwhile, the connecting pipe is in straight line arrangement, wind entering the connecting pipe is smoother, shaking of the connecting pipe is reduced, and the risk of detachment caused by the connecting pipe and the connecting pipe is avoided.

(2) The differential pressure sensor used in the ventilation system is contracted and placed into the connector through the funnel-shaped connecting pipe, the connector is rotated to drive the annular screw block to be in threaded connection with the annular screw groove, the connecting pipe is connected with the upper air port and the lower air port of the ventilation pipe respectively, so that the connecting pipe is more convenient to assemble and disassemble when being installed and used, and the tightness of the connecting pipe and the connector is improved.

Drawings

FIG. 1 is a perspective view of the external structure of the present utility model;

FIG. 2 is a front view of the external structure of the present utility model;

FIG. 3 is a right side view of the external structure of the present utility model;

fig. 4 is a schematic view of the internal structure of the seal assembly of the present utility model.

1, a mounting plate; 2. a differential pressure sensor body; 3. a connection line; 4. a seal assembly; 41. a connecting pipe; 42. a communicating pipe; 43. a connector; 44. an annular groove; 45. a funnel-shaped adaptor tube; 46. an annular screw block; 5. a ventilation pipe; 6. a limit buffer assembly; 61. a protective frame; 62. a damper; 63. a spring; 64. and a semicircular clamping block.

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.

Embodiment one:

referring to fig. 1-4, a differential pressure sensor used in a ventilation system includes a mounting plate 1, wherein a differential pressure sensor body 2 is mounted on the top wall of the mounting plate 1 through screws, a high-pressure air inlet and a low-pressure air inlet of the differential pressure sensor body 2 are both communicated with a sealing component 4, the sealing component 4 is both communicated with a limit buffer component 6, and the sealing component 4 is both communicated with the same ventilation pipe 5;

the limiting buffer assembly 6 comprises a protective frame 61, a plurality of groups of dampers 62 are symmetrically arranged on the inner wall of the protective frame 61, two dampers 62 are arranged in each group, springs 63 are arranged on the outer walls of the dampers 62, semicircular clamping blocks 64 are fixedly connected to adjacent ends of the dampers 62 in each group, the semicircular clamping blocks 64 are attached to the sealing assembly 4, the bottom wall of the protective frame 61 is fixedly connected with the top wall of the mounting plate 1, and the dampers 62 in each group are transversely and longitudinally staggered in sequence;

in the embodiment of the present utility model, the purpose of this arrangement is that the semicircular clamping blocks 64 are matched with the connecting pipe 41 in the ventilation state, so that when the connecting pipe 41 is clamped more firmly in the air intake state, when the connecting pipe 41 shakes, the damper 62 and the spring 63 are driven to cooperate to work to absorb the acting force, the shaking amplitude of the connecting pipe 41 is reduced, and each group of dampers 62 are arranged in a staggered manner in the transverse and longitudinal directions in sequence, so that the transverse and longitudinal directions of the connecting pipe are clamped by the corresponding semicircular clamping blocks 64, and the limit is more comprehensive.

Embodiment two:

referring to fig. 1-4, the present embodiment provides a technical solution based on the first embodiment: the sealing assembly 4 comprises two connecting pipes 41, wherein the two connecting pipes 41 are communicated with the ventilation pipe 5, the outer walls of the two connecting pipes 41 are attached to the inner walls of corresponding semicircular clamping blocks 64, the left ends of the two connecting pipes 41 are communicated with connecting pipes 43 through leak-proof bearings, the high-pressure air inlet and the low-pressure air inlet of the differential pressure sensor body 2 are communicated with communicating pipes 42, annular screw grooves 44 are formed in the side walls of the communicating pipes 42, annular screw blocks 46 matched with the annular screw grooves 44 are fixedly connected to the left ends of the connecting pipes 43, the annular screw blocks 46 are mutually screwed with the corresponding annular screw grooves 44, funnel-shaped connecting pipes 45 are communicated to the inner walls of the communicating pipes 42, the outer walls of the funnel-shaped connecting pipes 45 are attached to the inner walls of the connecting pipes 43, the funnel-shaped connecting pipes 45 are made of rubber materials, the left wall of the differential pressure sensor body 2 is electrically connected with a connecting circuit 3, and the connecting circuit 3 is communicated with an external control instrument;

in the embodiment of the present utility model, the purpose of this arrangement is that the funnel-shaped adaptor tube 45 is made of rubber, so that pressure can be applied to the adaptor 43 by human intervention, and the tightness of the connection between the adaptor 43 and the communication tube 42 is improved.

And all that is not described in detail in this specification is well known to those skilled in the art.

During operation, the connecting pipe 41 is placed into the limit buffer assembly 6, then the connector 43 is rotated to drive the annular screw block 46 to correspond to the annular screw groove 44, the funnel-shaped bearing pipe 45 is contracted and placed into the connector 43, the annular screw block 46 is in threaded connection with the annular screw groove 44, the connecting pipe 41 is respectively connected with the upper air port and the lower air port of the ventilation pipe 5, wind of the measured ventilation pipe 5 firstly enters the high-pressure air inlet through the connecting pipe 41, enters the low-pressure air inlet through the connecting pipe 41, finally enters the pressure sensor body 2 through the connecting pipe 42 to check pressure change, when wind in the ventilation pipe 5 enters the connecting pipe 41, the connecting pipe 41 is subjected to shaking under the action of wind pressure, when the connecting pipe 41 shakes up and down or left and right, the corresponding damper 62 and the spring 63 are driven by the semicircular clamping block 64, the shaking force of the connecting pipe 41 is absorbed and buffered by the cooperation of the damper 62 and the spring 63, the shaking force of the connecting pipe 41 is reduced, the shaking amplitude of the connecting pipe 41 is linearly arranged to a greater extent, and the bending position is reduced, and when the wind enters the connecting pipe 41 is more smoothly arranged.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A differential pressure sensor for use in a ventilation system, comprising a mounting plate (1), characterized in that: the pressure difference sensor comprises a mounting plate (1), wherein a pressure difference sensor body (2) is mounted on the top wall of the mounting plate through a screw, a high-pressure air inlet and a low-pressure air inlet of the pressure difference sensor body (2) are both communicated with a sealing assembly (4), the sealing assembly (4) is both communicated with a limit buffer assembly (6), and the sealing assembly (4) is both communicated with the same ventilation pipe (5);

spacing buffer unit (6) is including protection frame (61), protection frame (61) inner wall symmetrical arrangement has a plurality of group's attenuator (62), and every group attenuator (62) have two, spring (63) are all installed to attenuator (62) outer wall, and the equal fixedly connected with semicircular fixture block (64) of the adjacent one end of every group attenuator (62), semicircular fixture block (64) all laminate with seal unit (4), protection frame (61) diapire and mounting panel (1) roof fixed connection, every group attenuator (62) are transversely and vertically staggered arrangement in proper order.

2. A differential pressure sensor for use in a ventilation system according to claim 1, wherein: the sealing assembly (4) comprises two connecting pipes (41), the two connecting pipes (41) are communicated with the ventilation pipe (5), and the outer walls of the two connecting pipes (41) are attached to the inner walls of the corresponding semicircular clamping blocks (64).

3. A differential pressure sensor for use in a ventilation system according to claim 2, wherein: the left ends of the two connecting pipes (41) are communicated with a connector (43) through a leakage-proof bearing, and the high-pressure air inlet and the low-pressure air inlet of the differential pressure sensor body (2) are both communicated with a communicating pipe (42).

4. A differential pressure sensor for use in a ventilation system according to claim 3, wherein: annular spiral grooves (44) are formed in the side walls of the communicating pipes (42), and annular spiral blocks (46) matched with the annular spiral grooves (44) are fixedly connected to the left ends of the connectors (43).

5. A differential pressure sensor for use in a ventilation system as claimed in claim 4, wherein: the annular screw blocks (46) are mutually screwed with the corresponding annular screw grooves (44).

6. A differential pressure sensor for use in a ventilation system according to claim 3, wherein: the inner walls of the communicating pipes (42) are respectively communicated with a funnel-shaped joint pipe (45), and the outer walls of the funnel-shaped joint pipes (45) are attached to the inner walls of the connectors (43).

7. A differential pressure sensor for use in a ventilation system as claimed in claim 6, wherein: the funnel-shaped joint pipe (45) is made of rubber, the left wall of the differential pressure sensor body (2) is electrically connected with a connecting circuit (3), and the connecting circuit (3) is communicated with an external control instrument.