CN210426859U - Pressure transmitter - Google Patents
Pressure transmitter Download PDFInfo
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- CN210426859U CN210426859U CN201921729894.2U CN201921729894U CN210426859U CN 210426859 U CN210426859 U CN 210426859U CN 201921729894 U CN201921729894 U CN 201921729894U CN 210426859 U CN210426859 U CN 210426859U
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- mounting groove
- diaphragm
- gauge head
- pressure sensor
- pressure transmitter
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Abstract
The utility model discloses a pressure transmitter, including the gauge outfit, the gauge outfit cover, a circuit board, a housing, pressure sensor, the capillary, the isolation diaphragm, the spacing ring, the retaining member, the circuit board sets up in the gauge outfit, the gauge outfit both ends set up the gauge outfit cover respectively, the casing upper end is connected with the gauge outfit, pressure sensor sets up in the casing, the lower extreme is provided with the diaphragm mounting groove in the casing, be provided with the spring in the diaphragm mounting groove, the isolation diaphragm sets up on the spacing ring, and the isolation diaphragm passes through the spacing ring setting in the diaphragm mounting groove, the spacing ring passes through the retaining member to be fixed in the diaphragm mounting groove, be provided with fluid channel on the retaining member, the one end and the pressure sensor of capillary are connected, the other end and the isolation diaphragm looks butt of capillary, pressure. The utility model discloses be convenient for change the isolation diaphragm.
Description
Technical Field
The utility model relates to a pressure transmitter technical field specifically is a pressure transmitter.
Background
The pressure transmitter is a device for converting pressure into electric signal or pneumatic signal for control and remote transmission, and can convert the physical pressure parameters of gas, liquid and the like sensed by the load cell sensor into standard electric signal to be supplied to secondary instruments such as indication alarm instrument, recorder, regulator and the like for measurement, indication and process regulation. According to the working condition use type, the pressure transmitter is divided into a basic pressure transmitter and a remote transmission pressure transmitter, wherein the remote transmission pressure transmitter mainly comprises a pressure transmitter body, a flange, an isolation diaphragm, a capillary tube, a silicone oil filling medium and other main components. However, the isolation diaphragm of the existing pressure transmitter in the market is welded on the flange base, and when the isolation diaphragm is damaged and needs to be replaced, the whole flange needs to be replaced together, so that the cost is high, and the replacement is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned prior art's shortcoming, provide a pressure transmitter convenient to change isolation diaphragm.
The utility model discloses a realize through following technical scheme: a pressure transmitter comprises a gauge head, a gauge head cover, a circuit board, a shell, a pressure sensor, a capillary tube, an isolation diaphragm, a limiting ring and a locking piece, wherein the circuit board is arranged in the gauge head, the gauge head cover is respectively arranged at two ends of the gauge head, the upper end of the shell is connected with the gauge head, the pressure sensor is arranged in the shell, a diaphragm mounting groove is arranged at the lower end in the shell, a spring is arranged in the diaphragm mounting groove, the isolation diaphragm is arranged on the limiting ring, the isolation diaphragm is arranged in the diaphragm mounting groove through the limiting ring, the limiting ring is fixed in the diaphragm mounting groove through the locking piece, a fluid channel is arranged on the locking piece, one end of the capillary tube is connected with the pressure sensor, the other end of the capillary tube is abutted against the isolation diaphragm, and the pressure sensor is electrically connected with the circuit board, the spring is used for popping the limiting ring out of the diaphragm mounting groove.
Further: be provided with in the spacing ring and accept the annular, the spacing ring with diaphragm mounting groove looks adaptation, the spring is fixed to be set up in the diaphragm mounting groove.
Further: and the outer side wall of the limiting ring is provided with a limiting sliding block.
Further: the diaphragm mounting groove is characterized in that a sliding groove is formed in the side wall of the diaphragm mounting groove, the limiting sliding block is matched with the sliding groove, and a spring is arranged in the sliding groove.
Further: the retaining member includes the spliced pole, be provided with in the spliced pole fluid passage, the periphery on spliced pole upper portion is provided with the go-between, the inner wall of go-between is provided with the internal thread, casing lower extreme outer wall is provided with the external screw thread, the go-between through internal thread and external screw thread mutually support with the casing lower extreme is connected, spliced pole upper portion be used for with the spacing ring top pressure is in the diaphragm mounting groove.
Further: and the outer wall of the lower part of the connecting column is provided with connecting threads.
Further: be provided with pressure sensor mounting groove and capillary mounting groove in the casing, the capillary mounting groove respectively with pressure sensor mounting groove and diaphragm mounting groove intercommunication, pressure sensor sets up in the pressure sensor mounting groove, the capillary sets up in the capillary mounting groove.
Further: the gauge head cover is connected with the gauge head through threads.
Further: and a sealing ring is arranged at the connecting part of the gauge head cover and the gauge head.
The beneficial effects of the utility model
1. Compared with the prior art, to keep apart the diaphragm setting on the spacing ring, the spacing ring sets up in the diaphragm mounting groove in the casing, the fixed spring that is provided with of diaphragm mounting groove, the retaining member passes through internal thread and external screw thread and mutually supports fixed connection at the casing lower extreme, and utilize the retaining member to fix the spacing ring in the diaphragm mounting groove, when the retaining member is connected on the casing, the retaining member compresses tightly the spacing ring in the diaphragm mounting groove, the spring is compressed, thereby will keep apart diaphragm fixed mounting in the diaphragm mounting groove, back is twisted off the retaining member from the casing top spin, pop out the spacing ring from the diaphragm mounting groove when the spring resumes deformation, thereby take out the isolation diaphragm from the diaphragm mounting groove, be convenient for change isolation diaphragm.
2. Set up limit slide through the lateral wall at the spacing ring, set up the spout at the lateral wall of diaphragm mounting groove, be provided with the spring in the spout, mutually support through limit slide and spout, can arrange the spacing ring in the diaphragm mounting groove accurately, prevent that the spacing ring from taking place the skew, improve the accuracy nature of installation.
Drawings
Fig. 1 is an exploded view of an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a housing according to an embodiment of the present invention;
FIG. 3 is an exploded view of the second embodiment of the present invention;
fig. 4 is a schematic view of an internal structure of a second housing according to an embodiment of the present invention.
Description of reference numerals: 1-gauge head, 11-gauge head cover, 12-sealing ring, 2-circuit board, 3-shell, 31-diaphragm mounting groove, 311-sliding groove, 32-external thread, 33-pressure sensor mounting groove, 34-capillary mounting groove, 4-pressure sensor, 5-capillary, 6-isolation diaphragm, 7-spacing ring, 71-bearing ring groove, 72-spacing slide block, 8-locking piece, 81-fluid channel, 82-connecting column, 83-connecting ring, 84-internal thread, 85-connecting thread and 9-spring.
Detailed Description
Embodiment one, referring to fig. 1 and 2, a pressure transmitter includes a gauge head 1, a gauge head cover 11, a circuit board 2, a case 3, a pressure sensor 4, a capillary tube 5, an isolation diaphragm 6, a limit ring 7, and a locking member 8, wherein the circuit board 2 is disposed in the gauge head 1, the gauge head cover 11 is disposed at each end of the gauge head 1, the gauge head cover 11 is connected with the gauge head 1 through a screw thread, a sealing ring 12 is disposed at a connection portion between the gauge head cover 11 and the gauge head, the upper end of the case 3 is connected with the gauge head 1, the pressure sensor 4 is disposed in the case 3, a diaphragm mounting groove 31 is disposed at the lower end of the case 3, a receiving ring groove 71 is disposed in the limit ring 7, the limit ring 7 is fitted with the diaphragm mounting groove 31, a spring 9 is fixedly disposed in the diaphragm mounting groove 31, the isolation diaphragm 6 is disposed in the receiving ring groove 71 of the limit ring 7, spacing ring 7 passes through retaining member 8 to be fixed in diaphragm mounting groove 31, is provided with fluid passage 81 on the retaining member 8, and the one end and the pressure sensor 4 of capillary 5 are connected, and the other end and the isolation diaphragm 6 looks butt of capillary 5, pressure sensor 4 and circuit board 2 electric connection, spring 9 are used for popping out spacing ring 7 from diaphragm mounting groove 31.
The capillary 5 is filled with a transfer medium. The pressure of the object to be measured acts on the isolation diaphragm 6 through the fluid channel 81 of the connection column 82 and is then transmitted to the pressure sensor 4 through the capillary 5, and the pressure sensor 4 provides an electrical output to the circuit board 2.
Retaining member 8 includes spliced pole 82, be provided with fluid passage 81 in the spliced pole 82, the periphery on spliced pole 82 upper portion is provided with go-between 83, the inner wall of go-between 83 is provided with internal thread 84, casing 3 lower extreme outer wall is provided with external screw thread 32, go-between 83 mutually supports through internal thread 84 and external screw thread 32 and is connected with the casing 3 lower extreme, spliced pole 82 upper portion is used for being connected the roof pressure of spacing ring 7 in diaphragm mounting groove 31, spliced pole 82 lower part outer wall is provided with connecting thread 85.
A pressure sensor mounting groove 33 and a capillary tube mounting groove 34 are arranged in the shell 3, the capillary tube mounting groove 34 is respectively communicated with the pressure sensor mounting groove 33 and the diaphragm mounting groove 31, the pressure sensor 4 is arranged in the pressure sensor mounting groove 33, and the capillary tube 5 is arranged in the capillary tube mounting groove 34.
When the isolation diaphragm 6 is installed, the isolation diaphragm 6 is placed in the bearing ring groove 71 of the limiting ring 7, then the limiting ring 7 is placed in the diaphragm installation groove 31, the limiting ring 7 is abutted against the spring 8, the locking member 8 is screwed at the lower end of the shell 3, the locking member 8 is mutually matched and fixed on the shell 3 through the internal thread 84 on the inner wall of the connecting ring 83 and the external thread 32 on the outer wall of the lower end of the shell 3, in the screwing process, the top end of the upper part of the connecting column 82 is pressed against the limiting ring 7, and the spring 9 is compressed; when changing isolation diaphragm 6, twist retaining member 8 from 3 lower extremes of casing, retaining member 8 and 3 separation backs of casing, and spring 9 resumes deformation, pops out spacing ring 7 and isolation diaphragm 6 from diaphragm mounting groove 31 simultaneously to realize 6 installations of isolation diaphragm and dismantlement, be convenient for change isolation diaphragm 6.
The meter head cover 11 is connected with the meter head 1 through threads, so that parts in the meter head 1 can be conveniently overhauled, the sealing ring 12 is arranged at the connecting part of the meter head cover 11 and the meter head 1, and the sealing performance of the connection of the meter head cover 11 and the meter head 1 is improved.
Through set up connecting thread 85 at spliced pole 82 lower part outer wall, can be with the utility model discloses be connected with other equipment.
Second embodiment, referring to fig. 3 and 4, the present embodiment is different from the first embodiment in that a position limiting slider 72 is disposed on an outer side wall of the position limiting ring 7, a sliding groove 311 is disposed on a side wall of the diaphragm mounting groove 31, the position limiting slider 72 is adapted to the sliding groove 311, and the spring 9 is disposed in the sliding groove 311.
When the limiting ring 7 is arranged in the diaphragm mounting groove 31, the limiting slide block 72 is aligned to the sliding groove 311, the limiting slide block 72 is pressed into the sliding groove 311, the limiting slide block 72 is abutted against the spring 9 in the sliding groove 311, then the locking piece 8 is matched and fixed on the shell 3 through the internal thread 84 on the inner wall of the connecting ring 83 and the external thread 32 on the outer wall of the lower end of the shell 3, the top end of the upper part of the connecting column 82 is pressed against the limiting ring 7, and the spring 9 is compressed; when the isolation diaphragm 6 is replaced, the locking piece 8 is screwed off from the shell 3, and the limiting sliding block 72 is popped out from the sliding groove 311 when the spring 9 recovers deformation, so that the isolation diaphragm 6 is installed and detached.
Through spacing slider 72 and spout 311 mutually supporting, can arrange spacing ring 7 in diaphragm mounting groove 31 accurately, prevent that spacing ring 7 from taking place the skew, improve the accuracy nature of installation.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.
Claims (9)
1. A pressure transmitter, characterized by: the gauge comprises a gauge head, a gauge head cover, a circuit board, a shell, a pressure sensor, a capillary tube, an isolation diaphragm, a limiting ring and a locking piece, wherein the circuit board is arranged in the gauge head, the gauge head cover is respectively arranged at the two ends of the gauge head, the upper end of the shell is connected with the gauge head, the pressure sensor is arranged in the shell, a diaphragm mounting groove is arranged at the lower end in the shell, a spring is arranged in the diaphragm mounting groove, the isolation diaphragm is arranged on the limiting ring, the isolation diaphragm is arranged in the diaphragm mounting groove through the limiting ring, the limiting ring is fixed in the diaphragm mounting groove through the locking piece, a fluid channel is arranged on the locking piece, one end of the capillary tube is connected with the pressure sensor, the other end of the capillary tube is abutted against the isolation diaphragm, and the pressure sensor is electrically connected with the, the spring is used for popping the limiting ring out of the diaphragm mounting groove.
2. The pressure transmitter of claim 1, wherein: be provided with in the spacing ring and accept the annular, the spacing ring with diaphragm mounting groove looks adaptation, the spring is fixed to be set up in the diaphragm mounting groove.
3. The pressure transmitter of claim 1, wherein: and the outer side wall of the limiting ring is provided with a limiting sliding block.
4. A pressure transmitter as claimed in claim 3, wherein: the diaphragm mounting groove is characterized in that a sliding groove is formed in the side wall of the diaphragm mounting groove, the limiting sliding block is matched with the sliding groove, and a spring is arranged in the sliding groove.
5. Pressure transmitter according to any of claims 1-4, characterized in that: the retaining member includes the spliced pole, be provided with in the spliced pole fluid passage, the periphery on spliced pole upper portion is provided with the go-between, the inner wall of go-between is provided with the internal thread, casing lower extreme outer wall is provided with the external screw thread, the go-between through internal thread and external screw thread mutually support with the casing lower extreme is connected, spliced pole upper portion be used for with the spacing ring top pressure is in the diaphragm mounting groove.
6. The pressure transmitter of claim 5, wherein: and the outer wall of the lower part of the connecting column is provided with connecting threads.
7. The pressure transmitter of claim 5, wherein: be provided with pressure sensor mounting groove and capillary mounting groove in the casing, the capillary mounting groove respectively with pressure sensor mounting groove and diaphragm mounting groove intercommunication, pressure sensor sets up in the pressure sensor mounting groove, the capillary sets up in the capillary mounting groove.
8. The pressure transmitter of claim 6, wherein: the gauge head cover is connected with the gauge head through threads.
9. The pressure transmitter of claim 8, wherein: and a sealing ring is arranged at the connecting part of the gauge head cover and the gauge head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921729894.2U CN210426859U (en) | 2019-10-15 | 2019-10-15 | Pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921729894.2U CN210426859U (en) | 2019-10-15 | 2019-10-15 | Pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210426859U true CN210426859U (en) | 2020-04-28 |
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ID=70368322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921729894.2U Active CN210426859U (en) | 2019-10-15 | 2019-10-15 | Pressure transmitter |
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| Country | Link |
|---|---|
| CN (1) | CN210426859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763127A (en) * | 2020-12-28 | 2021-05-07 | 南京沃天科技股份有限公司 | Novel pneumatic pressure transmitter |
-
2019
- 2019-10-15 CN CN201921729894.2U patent/CN210426859U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763127A (en) * | 2020-12-28 | 2021-05-07 | 南京沃天科技股份有限公司 | Novel pneumatic pressure transmitter |
| CN112763127B (en) * | 2020-12-28 | 2022-09-06 | 南京沃天科技股份有限公司 | Pneumatic pressure transmitter |
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