CN210400699U - Pressure transmitter, pressure detection device and engineering machinery - Google Patents
Pressure transmitter, pressure detection device and engineering machinery Download PDFInfo
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- CN210400699U CN210400699U CN201921332879.4U CN201921332879U CN210400699U CN 210400699 U CN210400699 U CN 210400699U CN 201921332879 U CN201921332879 U CN 201921332879U CN 210400699 U CN210400699 U CN 210400699U
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Abstract
The utility model discloses a pressure transmitter, a pressure detection device and engineering machinery, wherein the pressure transmitter comprises an electric connector and a pressure leading nozzle which are connected into a whole, a pressure detection passage and a pressure sensitive element for detecting the pressure in the pressure detection passage are arranged in the pressure leading nozzle, a signal conditioning circuit board is arranged in the electric connector, and the pressure sensitive element, the signal conditioning circuit board and the electric connector are electrically connected in sequence; in addition, the pressure transmitter also comprises a metal shielding cover which has shielding and heat dissipation functions for the signal conditioning circuit board, and a pressure buffer channel for buffering the impact of the detected high-pressure medium; the pressure detection device and the engineering machinery both comprise the pressure transmitter. The utility model discloses the small and exquisite compactness of structure can prevent that the vibration from causing the circuit board not hard up, solves the problem that the long-time work of circuit board generates heat and shields external electromagnetic interference signal, and circuit board connection equipment convenient and fast can effectively cushion the impact of high-pressure medium to pressure-sensitive component.
Description
Technical Field
The utility model relates to a pressure transmitter field, concretely relates to pressure transmitter, pressure measurement and engineering machine tool.
Background
The pressure transmitter is a device for converting pressure into pneumatic signals or electric signals for control and remote transmission, is one of the most common sensors applied in industrial fields, is widely applied to various industrial automatic control environments, and relates to various industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, war industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like.
The prior pressure transmitter generally has the following technical problems: since the pressure impact is often large in the industrial field, the pressure sensitive element of the pressure transmitter is strongly impacted, and the zero point of the pressure transmitter is shifted due to the impact for a long time. And the use environment has strong vibration and serious electromagnetic interference, and the circuit board generates heat after long-time work, so that the precision and the long-term stability of the pressure transmitter are seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves: to the above-mentioned problem of prior art, a pressure transmitter, pressure measurement and engineering machine tool are provided, the utility model discloses a pressure transmitter structure is small and exquisite compact, can prevent that the vibration from causing the circuit board not hard up, and can cushion through the pressure buffer passageway and be detected the direct impact of high pressure medium to pressure sensing element to can restrain pressure sensing element and receive the high pressure medium to strike and take place the performance and take place the degradation, have detection accuracy height, long service life's advantage.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a pressure transmitter, including interconnect as an organic whole electric connector and pressure guiding mouth, be equipped with the pressure sensing element of pressure detection route and pressure in being arranged in the detection pressure detection route in the pressure guiding mouth, be equipped with signal conditioning circuit board in the electric connector, pressure sensing element, signal conditioning circuit board, electric connector electricity are connected in proper order, be equipped with between the opening that lies in the tip in the pressure detection route and the inboard pressure sensing element and be used for the buffering to be detected the pressure buffering passageway that high pressure medium strikeed, the pressure buffering passageway is for buckling pipeline passageway or crooked pipeline passageway way.
Optionally, the pressure detection passage is a through hole and the pressure sensing element is located at the bottom of the pressure detection passage, a buffer is inserted into the pressure detection passage, the buffer divides the pressure detection passage into an inner part and an outer part, and the pressure buffer channel is arranged on the buffer.
Optionally, the pressure buffering channel is composed of a longitudinal detection blind hole and at least one transverse detection hole communicated with the longitudinal detection blind hole, the longitudinal detection blind hole is arranged on an end face of the outer side of the buffer, a step portion is arranged on an outer wall of the inner side of the buffer, and the transverse detection hole is arranged on a side wall of the step portion.
Optionally, the bumper is threadedly engaged with an inner wall of the pressure detection passage.
Optionally, the pressure sensitive element is a sputtering film pressure sensitive element, the end of the inner side of the pressure guiding nozzle is provided with a plug, and the plug is in plug-in fit with the detection hole of the sputtering film pressure sensitive element and keeps sealed.
Optionally, the outside of pressure sensing element still overlaps and is equipped with the switching support, install the switching circuit board on the switching support, the connecting electrode of pressure sensing element is connected with the electric connection terminal electricity on the switching circuit board, one in the two of electric connection terminal on the switching circuit board, the electric connection terminal on the signal conditioning circuit board is the contact pin terminal, another is the jack terminal, the contact pin terminal is inserted and is established and realize the electricity and connect in the jack terminal.
Optionally, a metal shielding cover is arranged on the signal conditioning circuit board, at least one metal sheet is arranged on the edge of the metal shielding cover, the middle of the metal shielding cover is in contact with an electronic component on the signal conditioning circuit board, the metal sheet is welded on the signal conditioning circuit board, and the end of the metal sheet extends out to be in surface contact with a metal shell or a pressure guiding nozzle of the electric connector.
Optionally, the inboard of electric connector is equipped with the mounting groove, signal conditioning circuit board is located in the mounting groove, be equipped with the inside connecting terminal that switches on with electric connector's outside connecting terminal electricity in the mounting groove, welded connection is fixed between inside connecting terminal and the signal conditioning circuit board.
The utility model provides a pressure detection device, including pressure detection module, AD converting circuit and microprocessor, the pressure detection module is aforementioned pressure transmitter.
The utility model provides an engineering machine tool, including the engineering machine tool body, be equipped with the drive arrangement who adopts hydraulic oil or compressed air as power and be used for detecting the pressure measurement of hydraulic oil or compressed air in the engineering machine tool body, drive arrangement includes actuating mechanism, driving pump and is used for saving the storage container of hydraulic oil or compressed air, storage container passes through the driving pump and links to each other with actuating mechanism, pressure measurement includes pressure measurement module, AD converting circuit and microprocessor, pressure measurement module is aforementioned pressure transmitter.
Compared with the prior art, the utility model has the advantages of as follows:
1. the utility model discloses an interconnect becomes electric connector and the pressure guiding mouth as an organic whole, is equipped with the pressure sensing element of pressure detection route and pressure in being arranged in detecting the pressure detection route in the pressure guiding mouth, is equipped with signal conditioning circuit board in the electric connector, and the small and exquisite compactness of structure can prevent to vibrate and cause the circuit board not hard up, and the integrated level is high, greatly reduced raw and other materials cost.
2. The utility model discloses a pressure buffering passageway can cushion and is detected the direct impact of high pressure medium to pressure sensing element to can restrain pressure sensing element and receive high pressure medium to strike and the emergence performance takes place the degradation, have the advantage that the detection accuracy is high, long service life.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic view of the structure of the embodiment of the present invention.
Fig. 3 is a schematic top view of the embodiment of the present invention.
FIG. 4 is a schematic sectional view A-A of FIG. 3.
Fig. 5 is a schematic perspective exploded view of an embodiment of the present invention.
Illustration of the drawings: 1. an electrical connector; 11. a metal housing; 111. a first seal ring; 12. mounting grooves; 13. an external connection terminal; 14. an internal connection terminal; 2. a pressure guide nozzle; 20. a pressure detection passage; 21. a buffer; 210. a pressure buffer channel; 211. longitudinally detecting blind holes; 212. a transverse detection hole; 213. a step portion; 22. a plug-in connector; 23. an external threaded section; 24. a second seal ring; 3. a pressure sensitive element; 31. a transfer bracket; 32. switching the circuit board; 321. a jack terminal; 4. a signal conditioning circuit board; 41. a metal shield case; 411. a metal sheet; 42. and inserting pin terminals.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the pressure transmitter of this embodiment includes an electrical connector 1 and a pressure guiding nozzle 2 that are connected to each other to form a whole, a pressure detecting passage 20 and a pressure sensitive element 3 for detecting the pressure in the pressure detecting passage 20 are disposed in the pressure guiding nozzle 2, a signal conditioning circuit board 4 is disposed in the electrical connector 1, the pressure sensitive element 3, the signal conditioning circuit board 4 and the electrical connector 1 are electrically connected in sequence, a pressure buffer channel 210 for buffering the impact of the high-pressure medium to be detected is disposed between an opening at an end of the pressure detecting passage 20 and the pressure sensitive element 3 at the inner side, and the pressure buffer channel 210 is a bent pipeline channel or a curved pipeline channel. The pressure transmitter of this embodiment is small and exquisite compact in structure, can prevent that vibration from causing the circuit board not hard up, and can cushion through pressure buffering passageway 210 and be detected the direct impact of high-pressure medium to pressure sensing element 3 to can restrain the pressure sensing element and receive the high-pressure medium to strike and take place the performance and degrade, have detection accuracy height, long service life's advantage. Moreover, the pressure transmitter of this embodiment includes electric connector 1 and pressure nozzle 2 that interconnect becomes an organic whole, be equipped with signal conditioning circuit board 4 in the electric connector 1, provide open output interface through electric connector 1, because the interface is open, do not receive the influence that uses on-the-spot pipeline interface and electric interface requirement, can carry out mass large-scale production in the mill, and the product of making under the same production technology of accessible summary analysis, be convenient for carry out unified temperature compensation and linear correction to the product, and need not rely on specific high/low temperature environment during production, greatly reduced manufacturing cost, greatly improved production efficiency, improved product uniformity.
The electrical connector 1 is made of an insulating material. Aiming at the problem of troublesome welding of the external lead of the circuit board, referring to fig. 4 and 5, the inner side of the electric connector 1 is provided with a mounting groove 12, the signal conditioning circuit board 4 is arranged in the mounting groove 12, an internal connecting terminal 14 electrically connected and conducted with an external connecting terminal 13 of the electric connector 1 is arranged in the mounting groove 12, and the internal connecting terminal 14 and the signal conditioning circuit board 4 are fixedly connected by welding. Therefore, when the electric connector 1 is molded, the internal connecting terminals 14 are directly aligned to the positions of the signal conditioning circuit board 4 for pin soldering, and when the electric connector is assembled, the signal conditioning circuit board 4 is directly soldered on the electric connector 1, so that the lead soldering is facilitated, and meanwhile, the signal conditioning circuit board 4 is fixed.
In this embodiment, the electrical connector 1 is an aviation plug, specifically a 4P aviation plug, and the external connection terminal 13 specifically adopts a four-core pin, and may also adopt a four-core female pin as required. In addition, in order to seal between the metal shell 11 and the electrical connector 1, a first sealing ring 111 is further provided between the metal shell 11 and the electrical connector 1 in the present embodiment.
It should be noted that the basic principle of the pressure detection passage 20 is to use a bent pipeline passage or a bent pipeline passage to buffer the impact of the detected high-pressure medium on the pressure sensitive element 3. Based on the above principle, various feasible ways can be adopted, such as bending the pipeline channel directly at the front end processing position of the pressure leading nozzle 2 or bending the pipeline channel as the pressure buffering channel 210 for buffering the impact of the detected high-pressure medium.
As shown in fig. 4, in the present embodiment, in order to facilitate the processing of the pressure nozzle 2, the pressure detection passage 20 is a through hole, the pressure sensor 3 is located at the bottom of the pressure detection passage 20, the buffer 21 is inserted into the pressure detection passage 20, the buffer 21 divides the pressure detection passage 20 into an inner portion and an outer portion, and the pressure buffer channel 210 is provided on the buffer 21. Through the structure, the processing of the pressure buffering channel 210 can be switched to the buffer 21, so that the processing and the assembly are more convenient and faster.
As shown in fig. 4, in the present embodiment, the pressure buffer channel 210 is composed of a longitudinal detection blind hole 211 and at least one transverse detection hole 212 communicating with the longitudinal detection blind hole 211, the longitudinal detection blind hole 211 is provided on an outer end surface of the buffer 21, a step portion 213 is provided on an inner outer wall of the buffer 21, and the transverse detection hole 212 is provided on a side wall of the step portion 213. When high-pressure media impact occurs, the buffer 21 is impacted firstly, and then the high-pressure media overflow from the transverse detection hole 212 on the side surface of the buffer 21 through the longitudinal detection blind hole 211 to act on the pressure sensitive element 3, so that the direct impact of the high-pressure media on the pressure sensitive element 3 is avoided. And the pressure buffering channel 210 is composed of a longitudinal detection blind hole 211 and at least one transverse detection hole 212 communicated with the longitudinal detection blind hole 211, the structure of the pressure buffering channel 210 can be completed through simple drilling operation, and the processing is simple and convenient.
In addition to the structure of the pressure buffer channel 210 described in the present embodiment, the pressure buffer channel 210 configured in this way may also serve as a buffer, in which the longitudinal detection blind holes 211 are respectively disposed at both ends of the buffer 21, and the longitudinal detection blind holes 211 at both ends are kept in communication with each other through the middle transverse detection hole 212; in addition, the pressure buffer channel 210 may be formed by casting or splicing according to the requirement, and will not be described herein.
As shown in fig. 4, in the present embodiment, the buffer 21 is in threaded fit with the inner wall of the pressure detection passage 20, and compared with an assembly method using interference fit, the assembly method has the advantages of being convenient to install, tight in fit, and not easy to fall off.
As shown in fig. 4 and 5, the end of the pressure introduction nozzle 2 is provided with an external thread section 23 for connecting with the wall of the container/pipe for the high-pressure medium to be detected, and the root of the external thread section 23 forms a step portion provided with a second seal ring 24 on the end surface thereof for achieving reliable sealing with the container/pipe for the high-pressure medium to be detected.
As shown in fig. 4, the pressure sensitive element 3 is a sputtering film pressure sensitive element, the end of the inner side of the pressure guiding nozzle 2 is provided with a plug 22, and the plug 22 is in plug-in fit with the detection hole of the sputtering film pressure sensitive element and keeps sealed (the sealing can be realized by welding processes such as laser welding) so that the assembly is simple and convenient. The sputtering film pressure sensitive element is an existing pressure sensitive element and plays a role in converting a pressure signal into a voltage signal.
As shown in fig. 4 and 5, the adapter bracket 31 is further sleeved outside the pressure sensitive element 3, the adapter circuit board 32 is mounted on the adapter bracket 31, the connection electrode of the pressure sensitive element 3 is electrically connected to the electrical connection terminal on the adapter circuit board 32, one of the electrical connection terminal on the adapter circuit board 32 and the electrical connection terminal on the signal conditioning circuit board 4 is the pin terminal 42, and the other one is the socket terminal 321, and the pin terminal 42 is inserted into the socket terminal 321 to realize electrical connection. Referring to fig. 4, in this embodiment, specifically, the signal conditioning circuit board 4 is provided with the pin terminal 42, and the adapting circuit board 32 is provided with the jack terminal 321, so that the conditioning circuit board 4 can be more compact in structure, and the volume of the pressure transmitter in this embodiment can be reduced.
In order to solve the problems of circuit board looseness caused by vibration, circuit board heating after long-time operation and external electromagnetic interference, as shown in fig. 4 and 5, a metal shielding cover 41 is arranged on the signal conditioning circuit board 4, at least one metal sheet 411 is arranged on the edge of the metal shielding cover 41, the middle part of the metal shielding cover 41 is in contact with an electronic component on the signal conditioning circuit board 4 (ensuring heat conduction effect), the metal sheet 411 is welded on the signal conditioning circuit board 4 (used for fixing the signal conditioning circuit board 4), and the end part of the metal sheet 411 extends out to keep surface contact with the metal shell 11 (radiating by using the metal shell 11). In this embodiment, the metal shielding case 41 has four metal sheets 411, the four metal sheets 411 are welded on the signal conditioning circuit board 4 during installation, and the protruding portions of the four metal sheets 411 are in close contact with the metal shell 11 outside the electrical connector 1, and the middle position of the metal shielding case 41 is in close contact with the signal conditioning circuit board 4 (without short circuit). By the structural design, one object has multiple purposes: firstly, the heat of the signal conditioning circuit board 4 can be conducted to the metal shell 11 through the metal shielding case 41 to serve as a radiating fin, so that the problem of working heat generation of the signal conditioning circuit board 4 is solved; the metal shielding cover 41 is welded with the signal conditioning circuit board 4 and is in contact with the metal shell 11, so that the grounding shielding effect is achieved, and the anti-interference capability of the pressure transmitter is improved; and thirdly, the metal shielding cover 41 presses the signal conditioning circuit board 4, and the signal conditioning circuit board 4 is fixed. Further, the end of the metal sheet 411 may be extended to be in surface contact with the pressure nozzle 2 as needed to dissipate heat using the pressure nozzle 2 as a heat sink.
The assembly process of the pressure transmitter of the present embodiment is as follows:
1) assembling the electrical connector 1: firstly, pin terminals 42 are welded on the signal conditioning circuit board 4, and the signal conditioning circuit board 4 is placed in the mounting groove of the electrical connector 1, so that the positions of the internal connection terminals 14 of the electrical connector 1 and the pins of the signal conditioning circuit board 4 are aligned and fixed by welding.
2) Assembling a pressure guide nozzle 2: the pressure sensitive element 3 is arranged and welded on the plug-in connector 22 of the pressure guiding nozzle 2, the switching bracket 31 and the switching circuit board 32 are arranged, and the electrode connecting terminal of the switching circuit board 32 is connected with the electrode connecting terminal of the pressure sensitive element 3;
3) connecting the electrical connector 1 and the pressure nozzle 2: inserting the pin terminal 42 of the signal conditioning circuit board 4 into the jack terminal 321 to realize the physical connection between the electrical connector 1 and the auxiliary pressure nozzle 2 and the electrical connection between the signal conditioning circuit board 4 and the adapting circuit board 32, and after the signal conditioning circuit board 4 and the adapting circuit board 32 are inserted in place, the end of the metal sheet 411 of the metal shielding case 41 extends out of the outer wall;
4) packaging: sleeving the first sealing ring 111 on the electric connector 1, and sleeving the metal shell 11 on the electric connector 1, so that the inner wall of the metal shell 11 is in surface contact with the end part extending part of the metal sheet 411, and heat dissipation can be performed by using the metal shell 11; the joint between the metal shell 11 of the electrical connector 1 and the pressure nozzle 2 may be welded or bonded.
In addition, the present embodiment provides a pressure detection apparatus, which includes a pressure detection module, an a/D conversion circuit, and a microprocessor, where the pressure detection module is the aforementioned pressure transmitter.
In addition, this embodiment provides an engineering machine, including the engineering machine body, be equipped with in the engineering machine body and adopt hydraulic oil or compressed air as the drive arrangement of power and be used for detecting the pressure detection device of hydraulic oil or compressed air, drive arrangement includes actuating mechanism, driving pump and is used for storing the storage container of hydraulic oil or compressed air, and the storage container passes through driving pump and links to each other with actuating mechanism, and pressure detection device includes pressure detection module, a/D converting circuit and microprocessor, and pressure detection module is aforementioned pressure transmitter.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A pressure transmitter, characterized by: the pressure buffering device comprises an electric connector (1) and a pressure guiding nozzle (2) which are connected into a whole, wherein a pressure detection passage (20) and a pressure sensitive element (3) used for detecting the pressure in the pressure detection passage (20) are arranged in the pressure guiding nozzle (2), a signal conditioning circuit board (4) is arranged in the electric connector (1), the pressure sensitive element (3), the signal conditioning circuit board (4) and the electric connector (1) are sequentially and electrically connected, a pressure buffering channel (210) used for buffering the impact of a detected high-pressure medium is arranged between an opening at the end part of the pressure detection passage (20) and the pressure sensitive element (3) on the inner side of the pressure detection passage, and the pressure buffering channel (210) is a bent pipeline channel or a bent pipeline channel.
2. The pressure transmitter of claim 1, wherein: the pressure detection passage (20) is a straight through hole, the pressure sensitive element (3) is located at the bottom of the pressure detection passage (20), a buffer (21) is inserted into the pressure detection passage (20), the buffer (21) divides the pressure detection passage (20) into an inner part and an outer part, and the pressure buffer channel (210) is arranged on the buffer (21).
3. The pressure transmitter of claim 2, wherein: pressure buffering passageway (210) comprise vertical detection blind hole (211) and at least one horizontal detection hole (212) with vertical detection blind hole (211) intercommunication, vertical detection blind hole (211) are located on the outside terminal surface of buffer (21), be equipped with step portion (213) on the inboard outer wall of buffer (21), horizontal detection hole (212) are located on the lateral wall of step portion (213).
4. The pressure transmitter of claim 3, wherein: the buffer (21) is in threaded fit with the inner wall of the pressure detection passage (20).
5. The pressure transmitter of claim 1, wherein: the pressure sensitive element (3) is a sputtering film pressure sensitive element, the end part of the inner side of the pressure guiding nozzle (2) is provided with a plug-in connector (22), and the plug-in connector (22) is in plug-in fit with a detection hole of the sputtering film pressure sensitive element and keeps sealed.
6. The pressure transmitter of claim 1, wherein: the outside of pressure sensing element (3) still overlaps and is equipped with switching support (31), install switching circuit board (32) on switching support (31), the connecting electrode of pressure sensing element (3) is connected with the electric connection terminal electricity on switching circuit board (32), one in the electric connection terminal on switching circuit board (32), the electric connection terminal on signal conditioning circuit board (4) is plug pin terminal (42) in both, another is jack terminal (321), plug pin terminal (42) are inserted and are established and are realized the electricity in jack terminal (321) and connect.
7. The pressure transmitter of claim 1, wherein: be equipped with metal shielding cover (41) on signal conditioning circuit board (4), the edge of metal shielding cover (41) is equipped with at least one sheetmetal (411), the middle part of metal shielding cover (41) and the electronic components contact on signal conditioning circuit board (4), sheetmetal (411) welding is on signal conditioning circuit board (4), just the tip of sheetmetal (411) stretches out and keeps the face contact with outside metal casing (11) of electric connector (1) or pressure inducing mouth (2).
8. The pressure transmitter of claim 1, wherein: the inboard of electric connector (1) is equipped with mounting groove (12), signal conditioning circuit board (4) are located in mounting groove (12), be equipped with in mounting groove (12) and be connected inside connecting terminal (14) that switch on with external connection terminal (13) electricity of electric connector (1), welded connection is fixed between inside connecting terminal (14) and signal conditioning circuit board (4).
9. A pressure detection device, comprising a pressure detection module, an A/D conversion circuit and a microprocessor, characterized in that the pressure detection module is the pressure transmitter of any one of claims 1-8.
10. The utility model provides an engineering machine tool, includes the engineering machine tool body, be equipped with in the engineering machine tool body and adopt hydraulic oil or compressed air as the drive arrangement of power and be used for detecting the pressure measurement of hydraulic oil or compressed air, drive arrangement includes actuating mechanism, driving pump and is used for storing the reservoir of hydraulic oil or compressed air, reservoir passes through driving pump and links to each other with actuating mechanism, pressure measurement includes pressure measurement module, AD converting circuit and microprocessor, its characterized in that, pressure measurement module is any one in claim 1 ~ 8 pressure transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921332879.4U CN210400699U (en) | 2019-08-16 | 2019-08-16 | Pressure transmitter, pressure detection device and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921332879.4U CN210400699U (en) | 2019-08-16 | 2019-08-16 | Pressure transmitter, pressure detection device and engineering machinery |
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| Publication Number | Publication Date |
|---|---|
| CN210400699U true CN210400699U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921332879.4U Active CN210400699U (en) | 2019-08-16 | 2019-08-16 | Pressure transmitter, pressure detection device and engineering machinery |
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| Country | Link |
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| CN (1) | CN210400699U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411648A (en) * | 2019-08-16 | 2019-11-05 | 湖南启泰传感科技有限公司 | A kind of pressure transmitter, pressure-detecting device and engineering machinery |
| CN111707408A (en) * | 2020-07-08 | 2020-09-25 | 宁波中车时代传感技术有限公司 | Sputtering film pressure transmitter |
-
2019
- 2019-08-16 CN CN201921332879.4U patent/CN210400699U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411648A (en) * | 2019-08-16 | 2019-11-05 | 湖南启泰传感科技有限公司 | A kind of pressure transmitter, pressure-detecting device and engineering machinery |
| CN110411648B (en) * | 2019-08-16 | 2024-03-08 | 湖南启泰传感科技有限公司 | Pressure transmitter, pressure detection device and engineering machinery |
| CN111707408A (en) * | 2020-07-08 | 2020-09-25 | 宁波中车时代传感技术有限公司 | Sputtering film pressure transmitter |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Pressure transmitter, pressure detection device and construction machinery Effective date of registration: 20211008 Granted publication date: 20200424 Pledgee: China Construction Bank Corporation Liuyang sub branch Pledgor: HUNAN QITAI SENSING TECHNOLOGY Co.,Ltd. Registration number: Y2021430000058 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |