CN219776969U

CN219776969U - Pressure transmitter

Info

Publication number: CN219776969U
Application number: CN202223500290.5U
Authority: CN
Inventors: 高志强
Original assignee: Avic Optoelectronics Huayi Shenyang Electronic Technology Co ltd
Current assignee: Avic Optoelectronics Huayi Shenyang Electronic Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-09-29
Anticipated expiration: 2032-12-26

Abstract

The utility model provides a pressure transmitter, which comprises a connecting shell, wherein the first end of the connecting shell is provided with a mounting position; the damping piece is arranged at the installation position, and a vent hole is formed in the middle of the damping piece; the transmission assembly is arranged in the connecting shell; the connector is arranged at the second end of the connecting shell. This pressure transmitter has realized the miniaturization of pressure transmitter structure when having satisfied the use under the high pressure condition through the cooperation of coupling housing, damping piece, transmission subassembly and connector, because part specification is unified and the part is less, has avoided the sealed failure that the part leads to in the current structure, and seal reliability is high, can be used to batch production, has promoted production efficiency.

Description

Pressure transmitter

Technical Field

The utility model relates to the technical field of pressure detection equipment, in particular to a pressure transmitter.

Background

The pressure transmitter is a product for acquiring pressure signals and converting the pressure signals into electric signals, and is widely applied to various fields such as energy, chemical industry, medical science, automobiles, metallurgy, machine manufacturing, military industry, scientific research and teaching and the like.

The pressure core body inside the existing pressure transmitter is sealed by adopting an O-shaped ring or an L-shaped ring, so that the sealing ring is easy to age, the sealing failure is caused, the sealing effect is lost, and meanwhile, in order to ensure the sealing effect, the matching size between the existing pressure transmitter shell and the pressure core body is large, the components are more, and the mass consistent rapid production is inconvenient; in addition, the structure of the existing pressure transmitter can cause that the pressure core inside is easily damaged under the condition of high pressure, and the service life is short.

Accordingly, there is a need to design a pressure transmitter that addresses the above-described issues.

Disclosure of Invention

In view of the above, in order to overcome the defects of the prior art, the utility model provides a pressure transmitter, which effectively solves the problems of poor sealing effect, large size, mass production inconvenience and short service life of the existing pressure transmitter.

The utility model provides a pressure transmitter, which comprises a connecting shell, wherein a first end of the connecting shell is provided with a mounting position; the damping piece is arranged at the installation position, and a vent hole is formed in the middle of the damping piece; the transmission assembly is arranged in the connecting shell; the connector is arranged at the second end of the connecting shell.

Preferably, the connection housing includes: the connecting end part and the sleeve are arranged in the connecting end part, the mounting position is formed in the first end of the connecting end part, and the sleeve is arranged at the second end of the connecting end part.

Preferably, the transmission assembly includes a receiving portion and a converting portion, the receiving portion is disposed inside the connection end portion, the converting portion is disposed inside the sleeve, and the connector is connected with the receiving portion through the converting portion.

Preferably, the first end of the connection end portion protrudes outward from the center of the connection end portion, the mounting position includes a receiving portion and an isolating portion, the damping member is disposed in the receiving portion, the length of the receiving portion is longer than the length of the damping member in the extending direction from the connection housing to the connector, and the isolating portion is disposed between the receiving portion and the receiving portion.

Preferably, the pore diameter of the vent hole is 0.3mm-1mm.

Preferably, the receiving part comprises a pressure core body and a compression ring, the pressure core body is arranged inside the connecting end part, and the compression ring is arranged at the second end of the connecting end part; the pressure core body comprises a transmission piece, and the transmission piece penetrates through the compression ring.

Preferably, the conversion part comprises an adapter plate, and the transmission piece is connected with the adapter plate; the pin header is connected with the adapter plate; and a processing board connecting the pin header and the connector.

Preferably, the connector is disposed at an end of the sleeve away from the connection end, and the connector is electrically connected to the processing board; the connector comprises a contact pin part and a connecting part, wherein the contact pin part penetrates through the connecting part and extends into the sleeve, and connecting threads are formed on the periphery of the connecting part.

Preferably, the middle portion of the connection end portion forms a mounting portion extending from a center line of the connection end portion to the outer peripheral side, and the size of the mounting portion is larger than the size of the first end of the connection end portion and the size of the second end of the connection end portion.

Preferably, a sealing ring is arranged between the mounting part and the first end of the connecting end part, and the sealing ring is sleeved on the outer periphery side of the first end of the connecting end part.

According to the pressure transmitter, the connecting shell, the damping piece, the transmission component and the connector are matched, so that the miniaturization of the pressure transmitter structure is realized while the use under the high-pressure condition is met, and the sealing failure caused by parts in the existing structure is avoided due to uniform specifications of the parts and fewer parts, the sealing reliability is high, the pressure transmitter can be used for mass production, and the production efficiency is improved.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic diagram of a pressure transmitter in accordance with an embodiment of the utility model;

FIG. 2 shows an exploded view of a pressure transmitter according to an embodiment of the utility model;

FIG. 3 shows a cross-sectional view of a pressure transmitter in accordance with an embodiment of the present utility model;

FIG. 4 shows a schematic structural view of a damping member according to an embodiment of the present utility model;

fig. 5 shows another structural schematic view of a damping member according to an embodiment of the present utility model.

Reference numerals: 1-connecting end portions; 101-a first end; 102-a second end; 103-an installation part; 104-mounting grooves; 105-sealing rings; 106-mounting position; 107-a receiving portion; 108-isolating parts; 2-a sleeve; 3-a damping member; 301-vent holes; 302-mounting holes; 4-a pressure core; 401-a transfer member; 5-a compression ring; 6-an adapter plate; 7-arranging needles; 8-fixing screws; 9-treating the plate; a 10-connector; 1001-pin part; 1002-a connection; 1003-cover plate.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after understanding the present disclosure.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" includes both orientations "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent upon an understanding of the present disclosure. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

According to the present utility model, as shown in fig. 1 to 5, a pressure transmitter is provided, which can be used to collect a pressure medium signal and convert the pressure medium signal into an electrical signal for output, and includes a connection housing, a damping member 3, a transmission assembly, and a connector 10.

In the following description, detailed structures of the connection housing, the damping member 3, the transmission assembly and the connector 10 of the pressure transmitter will be described in detail with reference to fig. 1 to 5.

As shown in fig. 1 to 3, in an embodiment, the connection housing may include a connection end 1 and a sleeve 2, the sleeve 2 being disposed at a second end 102 of the connection end 1, the connection end 1 and the sleeve 2 serving to protect and connect components therein. Specifically, the connection end portion 1 may include a first end 101 and a second end 102, the first end 101 may protrude outward from the center of the connection end portion 1, and the first end 101 may be used to communicate a pressure medium such as air pressure or hydraulic pressure, and to conduct the pressure medium to the pressure core 4 described below. Preferably, a mounting location 106 is formed at a middle portion of the first end 101 protruding outwards, and the mounting location 106 may be formed as a through hole penetrating the first end 101 for mounting the damping member 3.

Preferably, as shown in fig. 1 to 3, in an embodiment, the mounting location 106 may include a receiving portion 107 and an isolating portion 108, where the receiving portion 107 is used to receive the damping member 3, and the receiving portion 107 is opened to have a length equal to that of the damping member 3, so that the damping member 3 may be disposed inside the first end 101 of the connection end portion 1. Preferably, an inner circumferential side of the receiving portion 107 is formed with an internal thread to correspond to a damper 3 having an external thread described below. The isolation part 108 is arranged on the damping piece 3 and the pressure core 4, when the pressure medium passes through the damping piece 3 and reaches the pressure core 4, the isolation part 108 can play a role in protecting the pressure core 4, so that the pressure medium with high strength or high pressure is prevented from directly contacting the pressure core 4, and the pressure core 4 is prevented from being damaged.

Preferably, as shown in fig. 1 to 3, in an embodiment, the outer circumferential side of the first end 101 may be formed with external threads, through which the pressure transmitter may be installed into a pressure system for pressure testing.

As shown in fig. 1 to 3, in an embodiment, the second end 102 of the connection end 1 is fixedly connected to the sleeve 2, which may be, for example, welded. The second end 102 is provided with a receiving space penetrating the mounting position 106 for mounting the pressure core 4. Preferably, an outer thread is formed on the outer peripheral side of the end portion of the second end 102, and the second end is connected to a press ring 5 described below by the outer thread.

Preferably, as shown in fig. 1 to 3, in the embodiment, the middle of the connection end portion 1 is formed with a mounting portion 103, the mounting portion 103 extending from the center line of the connection end portion 1 to the outer peripheral side, the size of the mounting portion 103 being larger than the size of the first end 101 of the connection end portion 1 and the size of the second end 102 of the connection end portion 1, where the size refers to the overall size of the mounting portion 103 and the connection end portion 1. The mounting portion 103 may be, for example, formed in a structure similar to a hexagonal nut, and a user may quickly mount the pressure transmitter to a use position through the mounting portion 103, while the mounting portion 103 may also be convenient for the user to take.

Preferably, as shown in fig. 1 to 3, in an embodiment, a mounting groove 104 may be formed between the middle portion of the connection end portion 1 and the first end 101, and the mounting groove 104 is used to accommodate the sealing ring 105. Since the first end 101 of the connecting end 1 is screwed to the pressure system or the device to be tested, the tightness of the external structure is ensured by the sealing ring 105.

As shown in fig. 1 to 3, in the embodiment, the sleeve 2 may be formed in a cylindrical structure, the sleeve 2 connects the connection end portion 1 and the connector 10, and serves to protect the internal components, and the connection between the sleeve 2 and the connection end portion 1 and the connector 10 may be welded. Preferably, the welding may be laser welding due to the small size of the pressure transmitter.

As shown in fig. 1 to 5, in the embodiment, a vent 301 is provided in the middle of the damper 3. The vent 301 has a damping effect, and when the instantaneous high pressure of the pressure medium reaches the damping piece 3, the transient air pressure can be slowly applied to the pressure core 4 through the vent 301, so that the pressure core 4 is protected. The pressure transmitter can be used in a pressure system with strong pulses of the medium to be measured by means of the ventilation opening 301 of the damping element 3.

Preferably, as shown in fig. 4, in the embodiment, the outer circumferential side of the damper 3 is formed with an external thread, by which the damper 3 can be screwed with the mounting position 106. Preferably, the end of the damping member 3 remote from the connection end 1 is provided with a mounting hole 302, and the mounting hole 302 may be, for example, a hexagonal hole, through which the damping member 3 may be quickly mounted to the mounting site 106. In addition, the external threads of the vent 301 and the damper 3 need to be subjected to deburring treatment, so as to avoid damage to the pressure sensing surface of the pressure core 4.

Preferably, as shown in fig. 1 to 5, in an embodiment, the aperture of the vent 301 may be, for example, 0.3mm to 1mm, and the condition of slowly releasing the transient air pressure may be satisfied. The aperture of the vent 301 should be small but should ensure that the pressure medium can pass through, and furthermore, the aperture of the vent 301 needs to be specifically selected according to the overall size of the pressure transmitter and the size of the components. Preferably, the vent 301 has a pore diameter of 0.4mm, and the vent 301 having a pore diameter of 0.4mm can satisfy a condition that most of the pressure medium passes through while facilitating the opening.

As shown in fig. 1 to 3, in an embodiment, the transmission assembly may include a receiving portion provided inside the connection end portion 1 for receiving the pressure medium and converting a pressure signal of the pressure medium into an electrical signal. The conversion portion is provided inside the sleeve 2 for transmitting an electrical signal to the connector 10, and the connector 10 described below is connected to the conversion portion.

Preferably, as shown in fig. 1 to 3, in an embodiment, the receiving portion may comprise a pressure core 4 and a pressure ring 5. The pressure core 4 may for example be a core of a pressure sensor of the prior art, the pressure core 4 may comprise a transmission member 401 for transmitting an electrical signal. The pressure core 4 is arranged in the second end 102, the end part of the compression ring 5 is provided with internal threads, and the pressure core 4 is further fixed by being in threaded connection with the second end 102 through the internal threads. The middle part of the other end of the compression ring 5 is provided with a through hole, and the transmission piece 401 penetrates through the through hole and is connected with the conversion part.

Preferably, as shown in fig. 1 to 3, in an embodiment, the converting part may include an adapter plate 6, a pin header 7, and a process plate 9. Specifically, the adapter plate 6 is fixedly connected with the compression ring 5 through the fixing screw 8 (the compression ring 5 is provided with a screw hole), so that stability under environments such as vibration is guaranteed. The number of the fixing screws 8 may be, for example, two in the embodiment, two fixing screws 8 being symmetrically arranged to the adapter plate 6. One end of the pin header 7 is penetrated with the adapter plate 6, and the other end is penetrated with the treatment plate 9. The number of pins 7 is plural, for example, two in the embodiment. The pins 7 may be connected to the adapter plate 6 and the handling plate 9, for example by soldering, preferably soldering.

As shown in fig. 1 to 3, in the embodiment, a connector 10 is provided at an end of the sleeve 2 remote from the connection end 1, the connector 10 being electrically connected with the process board 9. Specifically, the connector 10 may include a pin portion 1001 and a connection portion 1002. Specifically, the pin portion 1001 penetrates the connection portion 1002 and extends into the interior of the sleeve 2, and is connected to the end of the pin header 7 by a cable (not shown) in the interior of the sleeve 2, thereby realizing data transmission. The connection portion 1002 is an end portion of the connector 10 away from the sleeve 2, and the outer circumference of the connection portion 1002 is formed with a connection screw thread through which the remaining connection members are connected. The connector 10 may be, for example, a plug (having a pin portion 1001), and the remaining connector may be, for example, a socket, with simple and quick data transmission being performed by the connection form of the plug and the socket.

Preferably, as shown in fig. 1 to 3, in an embodiment, the connector 10 further comprises a cover 1003, and the cover 1003 is buckled on the end of the sleeve 2 to realize internal sealing.

The assembly process of the pressure transmitter comprises the following steps: firstly, the damping piece 3 is installed at the installation position 106, and the sealing ring 105 is installed in the installation groove 104 to play a role in sealing; then the pressure core 4 is fixed in the second end 102 by laser welding, and the power is not easy to be too high in the welding process; then the connecting end part 1 and the pressing ring 5 are fixed through threaded connection, the pressing ring 5 presses the pressure core 4 after the fixing, and the gap between the pressing ring 5 and the connecting end part 1 is welded through laser, so that the secondary and tertiary high-pressure protection effects are achieved; after the adapter plate 6 and the pin header 7 are fixed through soldering, the adapter plate 6 is fixed on the corresponding position of the pressure core 4 through soldering, then the adapter plate 6 is fixed at the corresponding position of the pressure ring 5 through the fixing screw 8, the integral stability is ensured, and finally the pin header 7 and the processing plate 9 are welded together through soldering; after the cables are soldered at the positions corresponding to the process boards 9, the cables are soldered to the pin portions 1001 of the connector 10 by soldering; finally, the connection locations between the connection end 1 and the sleeve 2, the sleeve 2 and the connector 10 are welded by means of laser welding. The pressure transmitter can bear the pressure of up to 100MPa for a long time by improving the structure, the outer diameter of the whole structure can be lower than 19mm, the length is lower than 60mm, and the whole weight is lower than 50g.

This pressure transmitter has realized the miniaturization of pressure transmitter structure when having satisfied the use under the high pressure condition through the cooperation of coupling housing, damping piece, transmission subassembly and connector, because part specification is unified and the part is less, has avoided the sealed failure that the part leads to in the current structure, and seal reliability is high, can be used to batch production, has promoted production efficiency.

Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A pressure transmitter, the pressure transmitter comprising:

the first end of the connecting shell is provided with a mounting position;

the damping piece is arranged at the installation position, and a vent hole is formed in the middle of the damping piece;

the transmission assembly is arranged in the connecting shell;

the connector is arranged at the second end of the connecting shell;

the connection housing includes: the connecting end part and the sleeve are arranged at the second end of the connecting end part, and the mounting position is formed in the first end of the connecting end part;

the transmission assembly comprises a receiving part and a converting part, wherein the receiving part is arranged in the connecting end part, the converting part is arranged in the sleeve, and the connector is connected with the receiving part through the converting part;

the first end of the connecting end part protrudes outwards from the center of the connecting end part, the mounting position comprises a containing part and a separating part, the damping part is arranged on the containing part, the length of the containing part is longer than that of the damping part in the extending direction of the connecting shell to the connector, and the separating part is arranged between the containing part and the receiving part.

2. The pressure transmitter of claim 1 wherein the vent aperture is 0.3mm-1mm.

3. The pressure transmitter of claim 1 wherein the receiver comprises a pressure core disposed inside the connection end and a pressure ring disposed at a second end of the connection end;

the pressure core body comprises a transmission piece, and the transmission piece penetrates through the compression ring.

4. The pressure transmitter of claim 3, wherein the conversion section comprises:

the transmission piece is connected with the adapter plate;

the pin header is connected with the adapter plate;

and a processing board connecting the pin header and the connector.

5. The pressure transmitter of claim 4 wherein the connector is disposed at an end of the sleeve distal from the connection end, the connector being electrically connected to the process plate;

the connector comprises a contact pin part and a connecting part, wherein the contact pin part penetrates through the connecting part and extends into the sleeve, and connecting threads are formed on the periphery of the connecting part.

6. The pressure transmitter of claim 1 wherein a middle portion of the connection end portion forms a mounting portion extending from a midline of the connection end portion to the outer peripheral side, the mounting portion having a dimension that is greater than a dimension of the first end of the connection end portion and a dimension of the second end of the connection end portion.

7. The pressure transmitter of claim 6 wherein a seal ring is disposed between the mounting portion and the first end of the connection end, the seal ring being sleeved on an outer peripheral side of the first end of the connection end.