CN212513446U - Mining intrinsic safety type pressure transmitter - Google Patents
Mining intrinsic safety type pressure transmitter Download PDFInfo
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- CN212513446U CN212513446U CN202021727261.0U CN202021727261U CN212513446U CN 212513446 U CN212513446 U CN 212513446U CN 202021727261 U CN202021727261 U CN 202021727261U CN 212513446 U CN212513446 U CN 212513446U
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Abstract
The utility model provides a mining intrinsic safety type pressure transmitter, wherein the shell is a hoist shell, the bottom of the hoist is provided with a sealing end cover, and a detection element is arranged in the hoist shell and divides the inner cavity of the hoist shell into a first cavity and a second cavity; an adjusting contact is arranged in the gourd mouth, a detection through hole is arranged on the adjusting contact, and a port of the detection through hole, which is far away from the outside, is abutted against a detection end of the detection element; the control circuit board is arranged in the second cavity; the connecting terminal is arranged in the second cavity; the wire passing port on the hoist shell is provided with a locking female joint and a locking male joint which are in threaded connection, a flame-retardant rubber ring is arranged between the locking female joint and the locking male joint, the locking female joint is communicated with a wire passing channel on the locking male joint, the wire passing channel on the locking female joint is communicated with the second cavity, and the detection element, the hoist shell and the sealing end cover are made of stainless steel. This scheme is used for increasing pressure transmitter's explosion-proof, dustproof and water-proof effects.
Description
Technical Field
The utility model relates to a changer field, concretely relates to mining ann's type pressure transmitter.
Background
Pressure transmitters in general consist primarily of a load cell sensor (also referred to as a pressure sensor), measurement circuitry, and process connections. The pressure sensor can convert physical pressure parameters of gas, liquid and the like sensed by the load cell sensor into standard electric signals to be output.
The mining intrinsic safety type pressure transmitter is one of pressure transmitters, is an intrinsic safety type instrument suitable for monitoring the environmental pressure of a coal mine underground roadway explosion-proof fire extinguishing device, is mainly used for monitoring the change of the environmental pressure of the explosion-proof fire extinguishing device, and automatically inspects the environmental pressure of the explosion-proof fire extinguishing device on line in real time so as to ensure that the automatic explosion-proof device is in an effective state for a long time and does not rain and muzzle explosion fire accidents.
However, the environment in the underground roadway of the coal mine is complex and generally has certain corrosivity, the dustproof effect of the existing mining intrinsic safety type pressure transmitter on the control circuit board of the pressure transmitter is often insufficient, and when the pressure transmitter is used, the service life of the control circuit board is often influenced by the corrosive environment in the roadway, so that the service life of the transmitter is further influenced. In addition, the explosion-proof and waterproof effects of the existing mining intrinsic safety type pressure transmitter are often insufficient, and the service life of the transmitter is influenced to a certain extent.
Therefore, the utility model provides a mining ann's type pressure transmitter for solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
Not enough to the above of prior art, the utility model provides a mining ann's type pressure transmitter for increase mining ann's type pressure transmitter's dustproof effect. And the waterproof effect of the mining intrinsic safety type pressure transmitter is improved. And the explosion-proof effect of the mining intrinsic safety type pressure transmitter is also improved.
The utility model provides a mining intrinsic safety type pressure transmitter, which comprises a shell, a detection element and a control circuit board, wherein the detection element is connected with the control circuit board; the shell is in a gourd shape and is marked as a gourd shell; wherein:
the opening of the gourd opening end of the gourd shell is arranged, the gourd bottom of the gourd shell is hollowed, and the sealing end cover is arranged on the gourd bottom;
the detection element is arranged in the gourd shell and divides the inner cavity of the gourd shell into two cavities which are not communicated with each other, wherein the cavity close to the gourd opening is marked as a first cavity, and the cavity far away from the gourd opening is marked as a second cavity;
an adjusting contact is detachably arranged in the hoist opening, the adjusting contact is positioned in the first cavity, and a detection through hole for communicating the outside with the inner cavity of the hoist shell is arranged on the adjusting contact;
the control circuit board is arranged in the second cavity;
the mining intrinsic safety type pressure transmitter further comprises a wiring terminal for outputting a detection signal outwards, and the wiring terminal is arranged at one end, close to the sealing end cover, in the second cavity; the control circuit board is connected with the wiring terminal;
the hoist shell is provided with a line passing port for penetrating a detection signal output line, a locking female joint is fixed on the line passing port, a free end of the locking female joint is in threaded connection with a locking male joint, and a flame-retardant rubber ring is arranged between the locking female joint and the locking male joint; the locking female joint and the locking male joint are both provided with wire passing channels, the wire passing channels on the locking female joint and the locking male joint are communicated through a cavity on the inner side of the flame-retardant rubber ring, and the wire passing channels on the locking female joint are communicated with the second cavity;
the gourd shell and the sealing end cover are sequentially made of stainless steel.
Furthermore, a microprocessor and a signal conditioning circuit for converting the analog voltage signal detected by the detection element into a digital voltage signal are integrated on the control circuit board, and the detection element is connected with the microprocessor through the signal conditioning circuit.
Furthermore, the digital voltage signal is a differential half-duplex RS485 bus signal, and the wiring terminal is a four-wire flame-retardant line pressing terminal.
Furthermore, a watchdog circuit is integrated on the control circuit board and connected with the microprocessor.
Furthermore, a power supply voltage stabilizing circuit with an overcurrent and overvoltage protection function is integrated on the control circuit board, and the power supply voltage stabilizing circuit is electrically connected with the microprocessor.
Furthermore, the mining intrinsic safety type pressure transmitter is also provided with a dustproof column inserted in the detection through hole on the adjusting contact, and one end of the dustproof column is provided with a dustproof limit cover; when the dustproof column is inserted into the detection through hole on the adjusting contact, the dustproof limiting cover is buckled outside the adjusting contact.
Furthermore, be equipped with on the terminal surface of calabash mouth and be used for pegging graft and place the interface of dustproof post, will dustproof post inserts the interface when, dustproof spacing cover of dustproof post is located the next door of calabash mouth.
Furthermore, the dustproof column and the dustproof limit cover thereof are both made of stainless steel.
Further, the detection element adopts a PC10 type silicon piezoresistive pressure core body.
Further, the flame-retardant mining explosion-proof rubber ring is adopted as the flame-retardant rubber ring.
The utility model has the advantages that,
(1) the utility model provides a mining intrinsic safety type pressure transmitter, which comprises a sealing end cover, a detecting element for dividing the inner cavity of a hoist shell into two cavities which are not communicated with each other, a locking female joint and a locking male joint, wherein a flame retardant rubber ring is arranged between the locking female joint and the locking male joint, when in use, the sealing end cover can be opened, then one end of a communication line is connected on a wiring terminal, then the other end of the communication wire sequentially passes through the wire passing channel of the locking female joint, the cavity inside the flame-retardant rubber ring and the wire passing channel on the locking male joint to be connected with an external control circuit, then the bottom of the hoist is sealed by a sealing end cover, the control circuit board is enclosed in the hoist shell, and the dustproof effect on the control circuit board can be achieved to a certain extent, and then the mining intrinsic safety type pressure transmitter can be changed to work in a corrosive environment in a coal mine underground roadway to a certain extent.
(2) The utility model provides a mining ann's type pressure transmitter, its calabash casing and end cover are the calabash casing and the end cover that adopt stainless steel to make in proper order, help ensuring the anti vibration and the shock resistance of changer to a certain extent, are convenient for be used for the pressure monitoring of flame proof extinguishing device environment in colliery underworkings.
(3) The utility model provides a mining ann's type pressure transmitter, detecting element adopt PC10 type silicon piezoresistive pressure core, and the changer of not only being convenient for is used for the pressure monitoring of flame proof extinguishing device environment in the colliery underworkings, and the changer of still being convenient for is at various gas pressure in colliery or non-colliery mountain, fluid pressure monitoring.
(4) The utility model provides a mining ann's type pressure transmitter, it still sets and is arranged in the dustproof post of pegging graft in the detection through-hole on adjusting the contact, the one end of dustproof post has dustproof spacing cover, and when in the detection through-hole with dustproof post pegging graft on adjusting the contact, dustproof spacing cover is detained outside adjusting the contact, and is visible when the changer does not use, is convenient for increase the dust-proof of changer to a certain extent.
(5) The utility model provides a mining ann's type pressure transmitter is equipped with on the terminal surface of calabash mouth and is used for pegging graft and place the interface of dustproof post will when the interface is inserted to the dustproof post, the dustproof spacing cover of dustproof post is located the next door of calabash mouth, when this mining ann's type pressure transmitter when using, can hand dustproof spacing cover, take off the dustproof post from detecting the through-hole, then peg graft the interface, and it is visible to help preventing losing of dustproof post to a certain extent.
(6) The utility model provides a mining ann's type pressure transmitter, its flame retardant formula rubber circle adopts the mining explosion-proof rubber circle of flame retardant formula, has increased the waterproof and explosion-proof effect of changer to a certain extent.
(7) The utility model provides a mining ann's type pressure transmitter, the power voltage stabilizing circuit who has overcurrent and overvoltage protection function that still integrates on its control circuit board has increased the explosion-proof effect of changer to a certain extent.
Furthermore, the utility model relates to a principle is reliable, and simple structure has very extensive application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a mining intrinsically safe pressure transmitter according to an embodiment of the present invention.
Fig. 2 is a schematic front view of the intrinsically safe pressure transmitter of fig. 1.
Fig. 3 is a schematic sectional view at a-a' in fig. 2.
Fig. 4 is a schematic view of the assembly state of the dust-proof post and the detection through hole on the adjusting contact in the present invention.
Fig. 5 is a schematic view of an assembly state of the dustproof pillar and the socket of the present invention.
Fig. 6 is an electrical block diagram of the intrinsically safe pressure transmitter for mining according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions 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, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Fig. 1-3 are schematic structural diagrams of a mining intrinsically safe pressure transmitter according to an embodiment of the present invention.
As shown in fig. 1-3, the mining intrinsic safety type pressure transmitter comprises a shell 1, a detection element 7 and a control circuit board 5, wherein the detection element 7 is connected with the control circuit board 5; the shell 1 is in a gourd shape and marked as a gourd shell; wherein:
the opening of the gourd mouth end of the gourd shell is arranged, the gourd bottom of the gourd shell is hollowed, and the sealing end cover 4 is arranged on the gourd bottom;
the detection element 7 is arranged in the hoist shell and divides the inner cavity of the hoist shell into two cavities which are not communicated with each other, wherein the cavity close to the hoist opening is marked as a first cavity, and the cavity far away from the hoist opening is marked as a second cavity;
an adjusting contact 6 is detachably arranged in the gourd opening, the adjusting contact 6 is positioned in the first cavity, and a detection through hole 6.1 for communicating the outside with the inner cavity of the gourd shell is formed in the adjusting contact 6; the port of the detection through hole 6.1 far away from the outside is abutted against the detection end of the detection element 7;
the control circuit board 5 is arranged in the second cavity;
the mining intrinsic safety type pressure transmitter further comprises a wiring terminal 9 for outputting a detection signal outwards, and the wiring terminal 9 is arranged at one end, close to the sealing end cover 4, in the second cavity; the control circuit board 5 is connected with the wiring terminal 9;
a line passing port used for penetrating a detection signal output line is formed in the hoist shell, a locking female joint 2 is arranged on the line passing port, a locking male joint 3 is connected to the free end of the locking female joint 2 in a threaded mode, and a flame-retardant rubber ring 8 is arranged between the locking female joint 2 and the locking male joint 3; the locking female joint 2 and the locking male joint 3 are both provided with a wire passing channel, the locking female joint 2 and the wire passing channel on the locking male joint 3 are communicated through a cavity on the inner side of the flame-retardant rubber ring 8, and the wire passing channel on the locking female joint 2 is communicated with the second cavity;
the gourd shell and the sealing end cover 4 are sequentially made of stainless steel and the gourd shell and the sealing end cover 4. The connection terminal 9 is integrated on the connection block 10.
The sealing end cover 4 and the gourd bottom can be connected in a threaded connection mode, and the mounting and dismounting are convenient.
During wiring, the sealing end cover 4 can be opened, then one end of the communication line is connected to the wiring terminal 9, then the other end of the communication line sequentially penetrates through the wire passing channel 2.1 of the locking female joint 2, the cavity inside the flame-retardant rubber ring 8 and the wire passing channel 3.1 on the locking male joint 3 to be connected with an external control circuit, and then the sealing end cover 4 is used for sealing the bottom of the hoist, so that wiring is completed. After the wiring is completed, the control circuit board 5 is enclosed in the gourd shell, so that the dustproof effect on the control circuit board 5 can be achieved to a certain degree, and the mine intrinsic safety type pressure transmitter can be changed conveniently to work in a corrosive environment in a coal mine underground roadway to a certain degree.
When the mining intrinsic safety type pressure transmitter is used, the mining intrinsic safety type pressure transmitter is installed at a position to be monitored, then the mining intrinsic safety type pressure transmitter is electrified, a medium to be detected (such as air in an underground coal mine roadway) in the environment where the position to be monitored is located is in contact with the detection end of the detection element 7 through the detection through hole 6.1, the detection element 7 transmits an analog voltage signal detected by the detection end to the control circuit board 5, and the control circuit board 5 converts the received analog voltage signal into a digital signal and then transmits the digital signal through the wiring terminal 9 and a communication line connected with the wiring terminal 9.
When the air inlet needs to be adjusted to be enlarged, the adjusting contact 6 can be detached. The adjusting contact 6 in this embodiment is a screw, and a through hole is arranged on the center line of the screw, and the through hole is the detecting through hole 6.1. The inner side wall of the calabash mouth is provided with an internal thread matched with the screw for use, and the screw is installed in the calabash mouth in a threaded connection mode.
Optionally, as an embodiment of the present invention, the flame-retardant rubber ring 8 is a flame-retardant mining explosion-proof rubber ring, and when the communication line passes through the inner cavity of the flame-retardant rubber ring 8, the inner side surface of the flame-retardant rubber ring 8 is fastened on the communication line, which contributes to the increase of the dustproof, waterproof and explosion-proof effects of the transmitter to some extent.
Optionally, as an embodiment of the present invention, the control circuit board 5 is integrated with a microprocessor and a signal conditioning circuit for converting the analog voltage signal detected by the detecting element 7 into a digital voltage signal, and the detecting element 7 is connected to the microprocessor through the signal conditioning circuit. During the use, detecting element 7 transmits the analog voltage signal who detects to signal conditioning circuit, and signal conditioning circuit carries out analog-to-digital conversion to the analog voltage signal that detecting element 7 transmitted, converts digital voltage signal into to give microprocessor, later by microprocessor through binding post 9 and binding post 9 on the communication line transmission go out.
Optionally, as the utility model discloses an embodiment, digital voltage signal is difference half-duplex RS485 bus signal, binding post 9 adopts the fire-retardant line ball terminal of four-wire.
Optionally, as an embodiment of the present invention, a watchdog circuit is further integrated on the control circuit board 5, and the watchdog circuit is connected to the microprocessor. The watchdog circuit is used for regularly sending a reset signal to the microprocessor, preventing the microprocessor from running away or crashing under external electromagnetic interference, and ensuring the stable operation of the microprocessor.
Optionally, as the utility model discloses an embodiment, still integrated power supply voltage stabilizing circuit who has excessive pressure and overcurrent protection on the control circuit board 5, power supply voltage stabilizing circuit with the microprocessor electricity is connected. As shown in fig. 6. The power supply voltage stabilizing circuit is used for stabilizing the voltage of a power supply of the microprocessor within a preset voltage range. The use of the power supply voltage stabilizing circuit is helpful for increasing the explosion-proof effect of the transmitter to a certain extent.
Optionally, as an embodiment of the present invention, as shown in fig. 4, the mining intrinsically safe pressure transmitter is further provided with a dust-proof post 11 for being inserted into a detection through hole 6.1 of the adjusting contact 6, and one end of the dust-proof post 11 is provided with a dust-proof limit cover 11.1; when the dustproof column 11 is inserted into the detection through hole 6.1 on the adjusting contact 6, the dustproof limit cover 11.1 is buckled outside the adjusting contact 6. When this mining ann's type pressure transmitter need be used, can hand dustproof position-limiting cover 11.1, take off dustproof post 11 from detecting through-hole 6.1, the air among the external environment waits for the detection medium can get into and detects through-hole 6.1, and detecting element 7 alright detects out the analog voltage signal that the environment corresponds based on detecting the medium that detects in the through-hole 6.1. When the mining intrinsic safety type pressure transmitter is not required to be used, the dustproof limiting cover 11.1 can be held by hand, and the dustproof column 11 is inserted into the detection through hole 6.1 again, so that the dustproof effect on the detection through hole 6.1 is achieved to a certain degree, the detection end of the detection element 7 can be touched in the detection through hole 6.1, and the accuracy of a test result is ensured.
Optionally, as an embodiment of the utility model, as shown in fig. 5, be equipped with on the terminal surface of calabash mouth and be used for pegging graft and place the interface 12 of dustproof post 11, will when dustproof post 11 inserts interface 12, dustproof spacing cover 11.1 of dustproof post 11 is located the next door of calabash mouth.
Optionally, as the utility model discloses an embodiment, dustproof post 11 and dustproof spacing cover 11.1 all adopt stainless steel's dustproof post and dustproof spacing cover.
Optionally, as an embodiment of the present invention, the detecting element 7 employs a PC10 type silicon piezoresistive pressure core. The PC10 type silicon piezoresistive pressure core body encapsulates a diffused silicon pressure sensitive chip into a 304 stainless steel shell, so that the mining intrinsic safety type pressure transmitter can be applied to various pressure detection occasions, including corrosive medium environments. In addition, the PC10 type silicon piezoresistive pressure core body encapsulates the diffused silicon pressure sensitive chip into the 304 stainless steel shell, which is helpful to increase the waterproof effect of the transmitter to a certain extent.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A mining intrinsic safety type pressure transmitter comprises a shell, a detection element and a control circuit board, wherein the detection element is connected with the control circuit board; the shell is in a gourd shape and is marked as a gourd shell; wherein:
the opening of the gourd opening end of the gourd shell is arranged, the gourd bottom of the gourd shell is hollowed, and the sealing end cover is arranged on the gourd bottom;
the detection element is arranged in the gourd shell and divides the inner cavity of the gourd shell into two cavities which are not communicated with each other, wherein the cavity close to the gourd opening is marked as a first cavity, and the cavity far away from the gourd opening is marked as a second cavity;
an adjusting contact is detachably arranged in the gourd opening, the adjusting contact is positioned in the first cavity, and a detection through hole for communicating the outside with the inner cavity of the gourd shell is formed in the adjusting contact; the port of the detection through hole far away from the outside is abutted against the detection end of the detection element;
the control circuit board is arranged in the second cavity;
the mining intrinsic safety type pressure transmitter further comprises a wiring terminal for outputting a detection signal outwards, and the wiring terminal is arranged at one end, close to the sealing end cover, in the second cavity; the control circuit board is connected with the wiring terminal;
the hoist shell is provided with a line passing port for penetrating a detection signal output line, a locking female joint is fixed on the line passing port, a free end of the locking female joint is in threaded connection with a locking male joint, and a flame-retardant rubber ring is arranged between the locking female joint and the locking male joint; the locking female joint and the locking male joint are both provided with wire passing channels, the wire passing channels on the locking female joint and the locking male joint are communicated through a cavity on the inner side of the flame-retardant rubber ring, and the wire passing channels on the locking female joint are communicated with the second cavity;
the gourd shell and the sealing end cover are sequentially made of stainless steel.
2. The mining intrinsically safe pressure transmitter of claim 1, wherein a microprocessor and a signal conditioning circuit for converting an analog voltage signal detected by the detection element into a digital voltage signal are integrated on the control circuit board, and the detection element is connected with the microprocessor through the signal conditioning circuit.
3. The mining intrinsically safe pressure transmitter of claim 2, wherein the digital voltage signal is a differential half-duplex RS485 bus signal, and the wiring terminal is a four-wire flame-retardant wire pressing terminal.
4. The mining intrinsically safe pressure transmitter of claim 2, wherein a watchdog circuit is further integrated on the control circuit board and connected with the microprocessor.
5. The mining intrinsically safe pressure transmitter of claim 2, wherein a power supply voltage stabilizing circuit with an overcurrent and overvoltage protection function is further integrated on the control circuit board, and the power supply voltage stabilizing circuit is electrically connected with the microprocessor.
6. The mining intrinsically safe pressure transmitter of any one of claims 1 to 5, further provided with a dust-proof column for insertion into a detection through hole in an adjusting contact, wherein one end of the dust-proof column is provided with a dust-proof limit cover; when the dustproof column is inserted into the detection through hole on the adjusting contact, the dustproof limiting cover is buckled outside the adjusting contact.
7. The mining intrinsic safety type pressure transmitter of claim 6, wherein an insertion port for inserting and placing the dustproof column is arranged on an end face of the gourd port, and when the dustproof column is inserted into the insertion port, a dustproof limiting cover of the dustproof column is positioned beside the gourd port.
8. The mining intrinsically safe pressure transmitter of claim 6, wherein the dustproof column and the dustproof limit cover thereof are both made of stainless steel.
9. The mining intrinsically safe pressure transmitter of any one of claims 1-5, wherein the sensing element employs a PC10 type silicon piezoresistive pressure core.
10. The mining intrinsically-safe pressure transmitter of any one of claims 1-5, wherein the flame-retardant rubber ring is a flame-retardant mining explosion-proof rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021727261.0U CN212513446U (en) | 2020-08-18 | 2020-08-18 | Mining intrinsic safety type pressure transmitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021727261.0U CN212513446U (en) | 2020-08-18 | 2020-08-18 | Mining intrinsic safety type pressure transmitter |
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| CN212513446U true CN212513446U (en) | 2021-02-09 |
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| CN202021727261.0U Active CN212513446U (en) | 2020-08-18 | 2020-08-18 | Mining intrinsic safety type pressure transmitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114858343A (en) * | 2022-03-24 | 2022-08-05 | 中国核动力研究设计院 | Nuclear safety level transmitter based on inorganic solid gas heat-insulating material |
-
2020
- 2020-08-18 CN CN202021727261.0U patent/CN212513446U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114858343A (en) * | 2022-03-24 | 2022-08-05 | 中国核动力研究设计院 | Nuclear safety level transmitter based on inorganic solid gas heat-insulating material |
| CN114858343B (en) * | 2022-03-24 | 2023-09-26 | 中国核动力研究设计院 | Nuclear safety level transmitter based on inorganic solid gas heat insulating material |
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