CN212060173U - Gas transmitter and shell thereof - Google Patents
Gas transmitter and shell thereof Download PDFInfo
- Publication number
- CN212060173U CN212060173U CN202020883449.8U CN202020883449U CN212060173U CN 212060173 U CN212060173 U CN 212060173U CN 202020883449 U CN202020883449 U CN 202020883449U CN 212060173 U CN212060173 U CN 212060173U
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- gas
- shell
- sensor
- chamber
- limiting
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- 238000007789 sealing Methods 0.000 claims abstract description 52
- 230000000670 limiting effect Effects 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 description 51
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model relates to a gas transmitter and a shell thereof, wherein the gas transmitter shell comprises an upper shell and a lower shell which are connected by screw threads, a sensor installation chamber is arranged at the upper part in the lower shell, a detection chamber is arranged at the lower part of the sensor installation chamber, the detection chamber is provided with an air inlet channel for communicating a pipeline to be detected and an air inlet hole of a gas sensor in the sensor installation chamber, and the bottom of the sensor installation chamber is provided with a sealing structure which is matched with the gas sensor in a sealing way; the upper part of the upper shell is provided with an output port through which a signal output plug in a detection assembly in the sensor mounting chamber passes; the upper shell is provided with a first limiting part for limiting a part of the structure of the detection assembly. The utility model discloses a gaseous changer, control panel and signal acquisition board adopt the grafting cooperation structure of contact pin, jack, save the wiring, have avoided the flying wire phenomenon, not only improve assembly efficiency, can also improve the reliability of product work. The casing of the gas transmitter adopts two parts in threaded connection, and is convenient to disassemble and assemble.
Description
Technical Field
The utility model relates to a gaseous detection technology field, concretely relates to gaseous changer and casing thereof.
Background
The gas transmitter mainly adopts a singlechip/microcontroller/micro-processing system to directly acquire the concentration information of a sensor, the sensor is installed on a signal acquisition board of the transmitter as a unit and is packaged in a shell of the transmitter together with a control board of the transmitter, and the transmitter is integrated. However, such a transmitter is cumbersome to calibrate at a later stage. The shell is assembled together by adopting a plurality of screws, and certain inconvenience in disassembly and assembly still exists.
The gas transmitter has more internal connecting wires, is inconvenient to assemble and has certain influence on the reliability of products.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas transmitter casing to solve the complicated technical problem of assembly that exists among the prior art. And simultaneously, the utility model also provides an use the gas changer of gas changer casing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a gas transmitter shell comprises an upper shell and a lower shell which are connected in a threaded manner, wherein a sensor installation chamber is arranged at the upper part in the lower shell, a detection chamber is arranged at the lower part of the sensor installation chamber, the detection chamber is provided with an air inlet channel and is used for communicating a pipeline to be detected and an air inlet hole of a gas sensor in the sensor installation chamber, and a sealing structure which is used for being in sealing fit with the gas sensor is arranged at the bottom of the sensor installation chamber;
the upper part of the upper shell is provided with an output port through which a signal output plug in a detection assembly in the sensor mounting chamber passes; the upper shell is provided with a first limiting part for limiting a part of the structure of the detection assembly.
Further, the lateral wall of lower casing is equipped with the intercommunication air intake passage's exhaust passage, and exhaust passage has the screw hole section for be connected with the blast pipe.
Further, the sealing structure comprises an inner sealing ring groove and an outer sealing ring groove, and one end of the air inlet channel, close to the sensor mounting chamber, is located in the central area of the inner sealing ring groove.
Furthermore, an external thread section is arranged at the bottom of the upper shell, an internal thread section is arranged at the upper part of the lower shell, the upper shell and the lower shell are in threaded connection through the external thread section and the internal thread section, and the first limiting part is formed at the bottom of the external thread section.
Furthermore, the bottom of the output port is provided with a blank holder to form a second limiting part for limiting the signal output plug.
The utility model discloses gaseous changer adopts following technical scheme:
the gas transmitter comprises a gas transmitter shell and a detection assembly, wherein the detection assembly comprises a gas sensor, a signal acquisition board and a control board, the gas transmitter shell comprises an upper shell and a lower shell which are connected through threads, a sensor installation chamber is arranged at the upper part in the lower shell, a detection chamber is arranged at the lower part of the sensor installation chamber, the detection chamber is provided with an air inlet channel for communicating a pipeline to be detected and the gas sensor, and the bottom of the sensor installation chamber is provided with a sealing structure for sealing and matching with the gas sensor;
the signal acquisition board is inserted into the gas sensor, the control board is positioned on the upper side of the signal acquisition board, the control board is inserted into the signal acquisition board, the upper side of the control board is provided with a signal output plug, and the signal output plug is fixed on the control board;
the upper part of the upper shell is provided with an output port through which the signal output plug passes; the upper shell is provided with a first limiting part for limiting a part of the structure of the detection assembly.
Further, the lateral wall of lower casing is equipped with the intercommunication air intake passage's exhaust passage, and exhaust passage has the screw hole section for be connected with the blast pipe.
Further, the sealing structure comprises an inner sealing ring groove, an outer sealing ring groove and sealing rings arranged in the corresponding sealing ring grooves, and one end of the air inlet channel, which is close to the sensor mounting chamber, is located in the central area of the inner sealing ring groove.
Furthermore, the bottom of the upper shell is provided with an external thread section, the upper part of the lower shell is provided with an internal thread section, the upper shell and the lower shell are in threaded connection through the external thread section and the internal thread section, and the bottom of the external thread section of the upper shell forms a first limiting part for limiting the signal acquisition board.
Furthermore, the bottom of the output port is provided with a blank holder to form a second limiting part for limiting the signal output plug.
The utility model has the advantages that:
the utility model discloses a gaseous changer, control panel and signal acquisition board adopt the grafting cooperation structure of contact pin, jack, save the wiring, have avoided the flying wire phenomenon, not only improve assembly efficiency, can also improve the reliability of product work. The casing of gas transmitter adopts threaded connection's two parts, easy dismounting, and goes up the casing and when revolving the spiral-wound assembly with lower casing, revolves the back of targetting in place, and spacing portion on going up the casing just can butt determine module's partial structure, and is spacing to the determine module of installation in the casing, need not adopt extra fixed knot to construct, further improves the convenience of assembly.
Drawings
FIG. 1 is a schematic external view of a gas transmitter of the present invention;
FIG. 2 is a schematic structural diagram (one) of the lower housing of FIG. 1;
FIG. 3 is a schematic structural view (II) of the lower housing of FIG. 1;
FIG. 4 is a schematic structural view (III) of the lower casing of FIG. 1;
FIG. 5 is an exploded schematic view of a sensing assembly inside a gas transmitter;
FIG. 6 is a schematic view of another angle of the gas sensor of FIG. 5;
FIG. 7 is a schematic view of the control panel of FIG. 5;
FIG. 8 is a schematic structural diagram (one) of the upper housing of FIG. 1;
fig. 9 is a structural schematic diagram (two) of the upper housing in fig. 1.
Names corresponding to the marks in the figure:
1. the gas sensor comprises an upper shell, 11, an external thread section, 111, a first limiting part, 12, a blank holder, 13, an output port, 2, a waterproof sealing ring, 3, a lower shell, 31, a rotation stopping plane, 32, an exhaust channel, 33, a connector head, 34, an internal thread section, 35, an internal sealing ring groove, 36, an external sealing ring groove, 37, an air inlet channel, 38, a sensor mounting chamber, 4, a signal output plug, 41, a limiting ring, 5, a control panel, 6, a signal acquisition board, 61, a jack terminal, 62, a contact pin, 7, a gas sensor, 71, a jack terminal, 72 and an air inlet hole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment of the utility model provides a:
as shown in fig. 1-9, the gas transmitter includes a gas transmitter housing and a detection assembly, the detection assembly includes a gas sensor 7, a signal acquisition board 6 and a control board 5, and the gas transmitter housing includes an upper housing 1 and a lower housing 3 which are connected by screw threads. The bottom of the upper shell 1 is provided with an external thread section 11, the upper part of the lower shell 3 is provided with an internal thread section 34, and the upper shell 1 and the lower shell 3 are in threaded connection through the external thread section and the internal thread section. The upper shell and the lower shell are both cylindrical and are formed by stainless steel finish machining.
The lower shell 3 is provided with a sensor mounting chamber 38 at the upper part inside, a detection chamber is arranged at the lower part of the sensor mounting chamber 38, and the detection chamber is provided with an air inlet channel 37 for communicating the pipeline to be detected and an air inlet hole 72 of the gas sensor 7. The bottom of the lower shell 3 is also convexly provided with a connector head 33 for being mounted on a corresponding detected device and other products. An air inlet passage 37 extends through the connector head 33 to allow air to enter the test chamber when there is an air leak in the test equipment tubing.
The side wall of the lower housing 3 is provided with an exhaust passage 32 communicating with the intake passage, and the exhaust passage 32 has a threaded hole section for connection with an exhaust pipe. When gas leaks, the gas sensor detects the gas leakage, and when the information is received by corresponding management and corresponding faults are arranged to be processed, the exhaust pipe is opened, so that the gas in the detection chamber can be exhausted, and the alarm action of detecting gas leakage is stopped.
The bottom of the sensor mounting chamber is provided with a sealing structure which is used for being in sealing fit with the gas sensor; the sealing structure comprises an inner sealing ring groove, an outer sealing ring groove and a sealing ring (not shown) arranged in the corresponding sealing ring groove, and the sealing ring is an O-shaped ring; the inner seal ring groove 35 and the outer seal ring groove 36. One end of the air inlet channel close to the sensor mounting chamber is positioned in the central area of the sealing ring groove on the inner side. The gas sensor is a product in the prior art, and the center of the bottom of the gas sensor 7 is provided with a gas inlet hole 72, and the aperture of the gas inlet hole is generally smaller. In order to ensure the sealing performance and the detection sensitivity, two sealing rings are arranged, and the air inlet is positioned in the central area of the inner side of the sealing ring. The sealing ring on the outer side plays a role in strengthening sealing, and ensures that gas can enter the gas inlet of the gas sensor without flowing to other spaces in the shell if gas leaks; on the other hand, the two sealing rings can also improve the stability of supporting the gas sensor and prevent the edge from falling.
The upper side of the control panel 5 is provided with a signal output plug 4, and the signal output plug 4 is welded and fixed on the control panel.
The signal acquisition board 6, which can also be called as a signal processing board, converts the analog signal of the gas sensor into a digital signal, then sends the digital signal into the control board 5 for conversion processing, converts the signal after digital processing into an analog signal of 4-20 mA for output, and outputs the analog signal by the signal output plug 4. The signal output plug 4 adopts a common aviation plug, and is convenient to connect.
The control panel 5 and the signal acquisition panel 6 adopt a plug-in mode, are convenient to install and compact in structure, and avoid internal flying.
In this embodiment, the original wire connection mode is changed into the plug-in mode, and the functions of conducting and signal transmission are also realized, so that the structure is improved, the signal processing principle is not improved, and the principle is not changed, so that the plug-in structure part is only shown in the drawing, and the detailed structure of the circuit board is not shown.
The bottom of the external thread section 11 of the upper case 1 forms a first stopper 111 for stopping the signal acquisition board. When the upper shell, the detection component and the lower shell are assembled, the detection component is arranged in the lower shell 3, the upper shell 1 is sleeved on the detection component, the detection component starts to be screwed, and after the detection component is screwed in place, the first limiting part 111 of the upper shell 1 is just pressed on the edge of the signal acquisition board 6. Other fixing parts such as screws are not additionally adopted, so that the stable installation of the detection assembly is realized, and the assembly efficiency is improved.
The upper part of the upper shell 1 is provided with an output port 13 through which the signal output plug 4 penetrates, and the bottom of the output port is provided with a blank holder 12 to form a second limiting part for limiting the signal output plug. The output port is formed by a pipe joint at the top of the upper shell, and the output port is an inner hole of the pipe joint. The bottom of the inner hole is also provided with a limiting hole with the aperture smaller than that of the inner hole, the edge of the limiting hole, namely the step formed by the limiting hole and the inner hole, is called the blank holder, so that the signal output plug can be prevented from falling out, and the limiting effect is achieved.
The connecting thread section of the signal output plug 4 is provided with a limiting ring 41, the limiting ring 41 protrudes along the radial direction of the plug, and after the signal output plug is installed in place, the edge pressing machine limits the limiting ring.
The periphery of the upper shell 1 is also provided with a waterproof sealing ring 2 at the upper part of the external thread section, and the waterproof sealing ring is tightly pressed between the internal thread section of the lower shell 3 and the external thread section of the upper shell 1; the waterproof function is achieved.
The peripheral wall of lower casing 3 still processes there is the plane, marks as rotation stopping plane 31, and rotation stopping plane 31 has two and symmetrical setting, can supply the wrench to hold.
When the upper shell, the detection component and the lower shell are assembled, the gas sensor 7, the signal acquisition board 6 and the control board 5 in the detection component can be sequentially inserted and assembled, and then the whole body is placed into the lower shell 3. The upper shell is sleeved, the upper shell starts to be screwed, and after the upper shell is screwed in place, the first limiting part 111 of the upper shell 1 just presses the edge of the signal acquisition board 6; because the signal acquisition board 6 and the control panel 5 are both circular boards, the outer diameter of the signal acquisition board 6 is larger than that of the control panel 5, so that the external thread section 11 of the upper shell 1 can stretch into the edge of the signal acquisition board, and the control panel 5 is positioned in the inner cavity of the upper shell. Go up the first spacing portion of casing 1 and just press on the edge of signal acquisition board, play the effect of fixed signal acquisition board position, the spacing ring of signal output plug and the blank pressing of last casing have less clearance this moment, because do not guarantee well that first spacing portion and the spacing portion of second all are the pressure state. Through first spacing portion, the spacing portion of second, can satisfy the purpose that the detection component is stable in casing inside. After the waterproof sealing ring is assembled, the waterproof sealing ring is just squeezed tightly, and the waterproof effect is achieved.
In other embodiments, the matching relationship between the upper and lower shells may also be designed such that, in the assembled product, the blank holder of the upper shell is just pressed on the limit ring of the signal output plug, and at this time, the first limit part of the upper shell is just positioned on the upper side of the edge of the signal acquisition board, with a small gap, without being pressed; of course, when the manufacturing accuracy is relatively high, the first stopper portion may be pressed against the upper side of the edge of the signal collecting plate, and the second stopper portion may be pressed against the stopper ring of the signal output plug. The degree of pressure of the first limiting part and the second limiting part is ensured not to damage parts in the shell.
In other embodiments, an internal thread section may be disposed in the lower portion of the upper housing, an external thread section may be disposed on the outer side of the upper portion of the lower housing, the upper and lower housings are in threaded connection with the external thread section through the internal thread section, and a limiting ring may be disposed inside the upper housing on the upper side of the internal thread section to form a first limiting portion, and the limiting ring and the lower housing are disposed coaxially.
The utility model discloses an embodiment of gas transmitter casing, lie in with the difference of above-mentioned gas transmitter, do not install inside determine module. Other types of gas sensors, such as H2S and SO2, can be used, and the present application is not limited to detecting a certain gas, and the structural design of the gas transformer is important.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.
Claims (10)
1. A gas transmitter housing, characterized by: the gas sensor detection device comprises an upper shell and a lower shell which are connected in a threaded manner, wherein a sensor installation chamber is arranged at the upper part in the lower shell, a detection chamber is arranged at the lower part of the sensor installation chamber, the detection chamber is provided with a gas inlet channel and is used for communicating a pipeline to be detected and a gas inlet hole of a gas sensor in the sensor installation chamber, and a sealing structure which is used for being in sealing fit with the gas sensor is arranged at the bottom of the sensor installation chamber; the upper part of the upper shell is provided with an output port through which a signal output plug in a detection assembly in the sensor mounting chamber passes; the upper shell is provided with a first limiting part for limiting a part of the structure of the detection assembly.
2. The gas transmitter housing of claim 1, wherein: the lateral wall of lower casing is equipped with the intercommunication air intake passage's exhaust passage, exhaust passage has the screw hole section for be connected with the blast pipe.
3. The gas transmitter housing of claim 1, wherein: the sealing structure comprises an inner sealing ring groove and an outer sealing ring groove, and one end of the air inlet channel, which is close to the sensor mounting chamber, is located in the central area of the inner sealing ring groove.
4. The gas transmitter housing according to any one of claims 1 to 3, characterized in that: the upper shell is connected with the lower shell in a threaded mode through the external thread section and the internal thread section, and the bottom of the external thread section forms the first limiting portion.
5. The gas transmitter housing of claim 4, wherein: and the bottom of the output port is provided with a blank holder to form a second limiting part for limiting the signal output plug.
6. Gas transmitter, its characterized in that: the gas transmitter comprises a gas transmitter shell and a detection assembly, wherein the detection assembly comprises a gas sensor, a signal acquisition board and a control board, the gas transmitter shell comprises an upper shell and a lower shell which are in threaded connection, a sensor installation chamber is arranged at the upper part in the lower shell, a detection chamber is arranged at the lower part of the sensor installation chamber, the detection chamber is provided with an air inlet channel and an air inlet hole for communicating a pipeline to be detected and the gas sensor, and a sealing structure which is in sealing fit with the gas sensor is arranged at the bottom of the sensor installation chamber;
the signal acquisition board is inserted into the gas sensor, the control board is positioned on the upper side of the signal acquisition board, the control board is inserted into the signal acquisition board, the upper side of the control board is provided with a signal output plug, and the signal output plug is fixed on the control board;
the upper part of the upper shell is provided with an output port through which the signal output plug passes; the upper shell is provided with a first limiting part for limiting a part of the structure of the detection assembly.
7. The gas transmitter of claim 6, wherein: the lateral wall of lower casing is equipped with the intercommunication air intake passage's exhaust passage, exhaust passage has the screw hole section for be connected with the blast pipe.
8. The gas transmitter of claim 6, wherein: the sealing structure comprises an inner sealing ring groove, an outer sealing ring groove and sealing rings arranged in the corresponding sealing ring grooves, and one end of the air inlet channel, which is close to the sensor mounting chamber, is located in the central area of the inner sealing ring groove.
9. The gas transmitter according to any one of claims 6 to 8, wherein: go up the casing bottom and be equipped with the external screw thread section, lower casing upper portion is equipped with internal thread section, goes up the casing and passes through external screw thread section, internal thread section realization threaded connection with lower casing, goes up the casing the bottom of external screw thread section forms and carries out spacing first spacing portion to the signal acquisition board.
10. The gas transmitter of claim 9, wherein: and the bottom of the output port is provided with a blank holder to form a second limiting part for limiting the signal output plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883449.8U CN212060173U (en) | 2020-05-22 | 2020-05-22 | Gas transmitter and shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883449.8U CN212060173U (en) | 2020-05-22 | 2020-05-22 | Gas transmitter and shell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212060173U true CN212060173U (en) | 2020-12-01 |
Family
ID=73520217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020883449.8U Expired - Fee Related CN212060173U (en) | 2020-05-22 | 2020-05-22 | Gas transmitter and shell thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212060173U (en) |
-
2020
- 2020-05-22 CN CN202020883449.8U patent/CN212060173U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |