CN214666975U

CN214666975U - Differential pressure transmitter with safety protection

Info

Publication number: CN214666975U
Application number: CN202120668895.1U
Authority: CN
Inventors: 牟恒; 刘渊; 马亚莉
Original assignee: Pulist Measurement And Control Technology Tianchang Co ltd
Current assignee: Pulist Measurement And Control Technology Tianchang Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-09
Anticipated expiration: 2031-04-01

Abstract

The utility model relates to a differential pressure transmitter technical field specifically discloses a differential pressure transmitter with safety protection, including the connecting seat, with the work frame of connecting seat looks fixed connection, signal output device and orifice plate, the left and right sides of connecting seat all rotates and is connected with the bull stick, the inside sliding connection of bull stick has the slide bar that runs through the bull stick bottom and is connected with the bull stick through connecting spring, the slide bar surface and the position department that is close to the bottom have the fixing bolt that runs through the slide bar left and right sides through threaded connection, the inside of work frame is installed pressure differential response frame and the inside of pressure differential response frame is provided with the pressure sensing diaphragm, the left and right sides of pressure differential response frame all fixedly connected with the connecting pipe, the inside swing joint of left side link frame has the filtration frame, the right side fixedly connected with of filtration frame runs through the filter screen of the filtration frame left and right sides; the utility model discloses can avoid solid particulate matter in the fluid to cause the influence to the normal work of device, prevent that signal output device from droing from the device.

Description

Differential pressure transmitter with safety protection

Technical Field

The utility model relates to a differential pressure transmitter technical field, concretely relates to differential pressure transmitter with safety protection.

Background

A differential pressure transmitter is a detection device for measuring the liquid level, flow and pressure of liquid, gas or steam, belongs to a sensor, can convert the sensed pressure into an electric signal and then output the electric signal, and mainly detects the flow and the pressure of fluid by detecting different differential pressures generated by different flow velocities when the fluid flows in a pipeline.

Current differential pressure transmitter is mostly open structure, the fluid can get into differential pressure transmitter's inside and with the contact of pressure sensing diaphragm, thereby utilize the pressure differential that the pressure sensing diaphragm was experienced to detect the fluid, but when being mingled with solid particulate matter in the fluid (impurity such as fine sand), solid particulate matter piles up around the pressure sensing diaphragm easily, lead to the pressure sensing diaphragm to reduce the response sensitivity of pressure, thereby influence device's normal work, current differential pressure transmitter mainly connects the device body and signal output device through helicitic texture simultaneously, signal output device is in unsettled state, stability is not high, make signal output device drop from the device body easily.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a differential pressure transmitter with safety protection possesses the normal work that can avoid solid particulate matter and pressure sensing diaphragm contact influence device in the fluid, prevents advantages such as signal output device from coming off from pressure differential pressure sensing frame, has solved the problem that solid particulate matter causes the influence to the normal work of device easily, and signal output device comes off from the device body easily.

The utility model discloses a differential pressure transmitter with safety protection, including the connecting seat, with the work frame of connecting seat looks fixed connection, signal output device and orifice plate, the left and right sides of connecting seat all rotates and is connected with the bull stick, the inside sliding connection of bull stick has the slide bar that runs through the bull stick bottom and is connected with the bull stick through connecting spring, the slide bar surface and the position department that is close to the bottom have the fixing bolt that runs through the slide bar left and right sides through threaded connection, the inside of work frame is installed pressure differential response frame and the inside of pressure differential response frame is provided with the pressure sensing diaphragm, the left and right sides of pressure differential response frame all fixedly connected with the connecting pipe, the left and right sides of orifice plate all fixedly connected with the connecting frame and the left side of the connecting frame that the orifice plate left side set up has the installing frame through bolted connection, the inside swing joint of orifice plate left side connecting frame has the filtration frame, the right side of the filter frame is fixedly connected with filter screens which penetrate through the left side and the right side of the filter frame.

The utility model discloses a differential pressure transmitter with safety protection, wherein threaded connection is passed through with signal output device's top to the bottom of work frame, signal output device's top be provided with connecting wire and connecting wire the top be located work frame inside and with pressure differential response frame electric connection, inject work frame and signal output device's connected mode through helicitic texture, respond to electric connection between the frame through connecting wire to signal output device and pressure differential simultaneously.

The utility model discloses a differential pressure transmitter with safety protection, wherein the top of connecting pipe runs through the top of connecting seat and the bottom of carriage simultaneously and is located the inside of carriage, the connecting pipe position that the pressure differential response frame left and right sides set up is corresponding with the position of orifice plate left and right sides carriage respectively, utilizes the mutual intercommunication between connecting pipe and the carriage for fluid matter in the entering carriage can flow in the inside of pressure differential response frame through the connecting pipe, thereby extrudees the pressure sensing diaphragm in the pressure differential response frame.

The utility model discloses a differential pressure transmitter with safety protection, wherein the inside of orifice plate is seted up and is link up the spread groove of the left and right sides, and the holistic shape structure of this spread groove is greater than the shape size on spread groove right side for round platform type structure and the left shape size of spread groove, prescribes a limit to through the shape to the inboard spread groove of hole for the velocity of flow inequality of orifice plate left and right sides fluid matter, alright make the fluid matter that the orifice plate left and right sides flows produce the velocity of flow difference, thereby form the pressure differential.

The utility model discloses a differential pressure transmitter with safety protection, wherein the equal fixedly connected with connecting plate in signal output device's the left and right sides, fixing bolt's position is corresponding with the position of connecting plate, fixing bolt passes through threaded connection near signal output device's one end and connecting plate, through the threaded connection between fixing bolt and the connecting plate, can fix signal output device's the left and right sides under bull stick, slide bar and coupling spring's effect, avoids signal output device to drop from the bottom of work frame.

The utility model discloses a differential pressure transmitter with safety protection, wherein the shape size of filter screen agrees with the inside shape of coupling frame mutually, filter the inside shape size of frame and be greater than the shape size on filter screen surface, inject through filter screen, the inside shape size of filter frame and coupling frame inside, can avoid the filter screen to cause the hindrance to the velocity of flow of fluid matter, the accumulation is inside filtering the frame when a small amount of solid particulate matter accumulation simultaneously, can avoid causing to block the filter screen.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses when the fluid passes through in the aperture plate of splice box and installing frame inflow, can be under the effect of filter screen in filter frame and the filter frame, block the inside of filtering the frame with the solid particle thing that mix with in the fluid, avoid the solid particle thing that mix with in the fluid to pass through inside back and the pressure sensing diaphragm contact of splice box and connecting pipe entering pressure differential response frame, influence the sensitivity of pressure sensing diaphragm, prevent that the solid particle thing that mix with in the fluid from causing the influence to the device's normal work, cooperate bolted connection between installing frame and the splice box simultaneously, make the staff can be through tearing down the back down the installing frame from the splice box, take out in the splice box will be filtered, be convenient for clear up the solid particle thing of the accumulation in the filter frame.

2. The utility model discloses when installing signal output device, through the helicitic texture between signal output device and the work frame with signal output device and work frame connection back, can pass through the rotation bull stick again, make slide bar and fixing bolt's position move to with the signal output device on the connecting plate position that sets up correspond the department, alright pass through fixing bolt again, be connected the slide bar with the connecting plate, thereby utilize the bull stick, slide bar and connecting spring live signal output device's the left and right sides rigidity, avoid signal output device to drop from the bottom of work frame.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic front sectional view of the filter frame of the present invention;

fig. 4 is a schematic view of the whole three-dimensional structure of the filter frame of the present invention.

In the figure: 1. a connecting seat; 2. a working frame; 3. a differential pressure induction frame; 31. a pressure sensing diaphragm; 32. a connecting pipe; 4. a rotating rod; 41. a slide bar; 42. a connecting spring; 43. fixing the bolt; 5. a signal output device; 51. a connecting plate; 52. connecting a lead; 6. an orifice plate; 61. a connecting frame; 62. installing a frame; 7. a filter frame; 71. and (4) a filter screen.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these physical details should not be taken to limit the invention. That is, in some embodiments of the invention, these physical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-4, the differential pressure transmitter with safety protection of the present invention comprises a connecting seat 1, a working frame 2 fixedly connected to the connecting seat 1, a signal output device 5 and a perforated plate 6, wherein the left and right sides of the connecting seat 1 are rotatably connected to a rotating rod 4, the rotating rod 4 is slidably connected to a sliding rod 41 penetrating the bottom of the rotating rod 4 and connected to the rotating rod 4 through a connecting spring 42, a fixing bolt 43 penetrating the left and right sides of the sliding rod 41 is connected to a position on the surface of the sliding rod 41 near the bottom through a screw thread, a pressure-sensing diaphragm 31 is installed inside the working frame 2 and the pressure-sensing frame 3, a connecting pipe 32 is fixedly connected to the left and right sides of the pressure-sensing frame 3, a connecting frame 61 is fixedly connected to the left and right sides of the perforated plate 6, and a mounting frame 62 is connected to the left side of the connecting frame 61 arranged on the left side of the perforated plate 6 through a bolt, the inside of the left connecting frame 61 of the pore plate 6 is movably connected with a filtering frame 7, and the right side of the filtering frame 7 is fixedly connected with a filtering net 71 which penetrates through the left side and the right side of the filtering frame 7.

The bottom of the working frame 2 is connected with the top of the signal output device 5 through threads, the top of the signal output device 5 is provided with a connecting lead 52, the top end of the connecting lead 52 is located inside the working frame 2 and is electrically connected with the differential pressure sensing frame 3, the connecting mode of the working frame 2 and the signal output device 5 is limited through a threaded structure, and meanwhile, the connecting lead 52 is used for electrically connecting the signal output device 5 and the differential pressure sensing frame 3.

The top of connecting pipe 32 runs through the top of connecting seat 1 and the bottom of coupling frame 61 simultaneously and is located the inside of coupling frame 61, and the connecting pipe 32 position that the pressure differential response frame 3 left and right sides set up respectively with the position of the 6 left and right sides coupling frame 61 of orifice plate corresponding, utilizes the intercommunication each other between connecting pipe 32 and the coupling frame 61 for the inside that fluid that gets into in the coupling frame 61 can flow in pressure differential response frame 3 through connecting pipe 32, thereby extrudees the pressure sensing diaphragm 31 in the pressure differential response frame 3.

The inside of orifice plate 6 is seted up and is link up the spread groove of left and right sides, and the holistic shape structure of this spread groove is the round platform type structure and the left shape size of spread groove is greater than the shape size on spread groove right side, prescribes a limit to the shape of spread groove in the orifice plate 6 for the velocity of flow of orifice plate 6 left and right sides fluidum is unequal, alright make the fluidum that the orifice plate 6 left and right sides flows produce the velocity of flow difference, thereby forms pressure differential.

Connecting plates 51 are fixedly connected to the left side and the right side of the signal output device 5, the position of the fixing bolt 43 corresponds to the position of the connecting plates 51, one end, close to the signal output device 5, of the fixing bolt 43 is in threaded connection with the connecting plates 51, and through threaded connection between the fixing bolt 43 and the connecting plates 51, the left side and the right side of the signal output device 5 can be fixed under the action of the rotating rod 4, the sliding rod 41 and the connecting spring 42, so that the signal output device 5 is prevented from falling off from the bottom of the working frame 2.

The shape and size of the filter screen 71 are matched with the shape and size of the inside of the connecting frame 61, the shape and size of the inside of the filter frame 7 are larger than the shape and size of the surface of the filter screen 71, the shape and size of the inside of the filter frame 7 and the shape and size of the inside of the connecting frame 61 are limited, the blocking of the flow velocity of fluid caused by the filter screen 71 can be avoided, and meanwhile, the blocking of the filter screen 71 can be avoided when a small amount of solid particles accumulated in the filter frame 7 are accumulated inside the filter frame 7.

When the utility model is used, firstly, the signal output device 5 is connected with the working frame 2 through a thread structure, after the bottom of the working frame 2 is connected with the top of the signal output device 5, the rotating rod 4 can be rotated, the positions of the sliding rod 41 and the fixing bolt 43 are moved to the position corresponding to the position of the connecting plate 51 arranged on the signal output device 5, then the sliding rod 41 is connected with the connecting plate 51 through the fixing bolt 43, thereby the left and right sides of the signal output device 5 are fixed by the rotating rod 4, the sliding rod 41 and the connecting spring 42, the signal output device 5 is prevented from falling off from the bottom of the working frame 2, then the fluid flows into the mounting frame 62 and the connecting frame 61 through the external output pipe, enters the inside of the pore plate 6, flows out from the right side of the pore plate 6 and finally flows out from the connecting frame 61 arranged on the right side of the pore plate 6, when being mingled with solid particle in the fluid, the fluid is when through installing frame 62 and connection frame 61, solid particle in the fluid can be in filter frame 7 under the effect of filter screen 71, be blockked in the inside of filtering frame 7, avoid solid particle in the fluid to get into through connecting pipe 32 behind the connection frame 61 along with the fluid inflow pressure differential response frame 3, thereby prevent that solid particle from piling up the sensitivity that influences pressure sensing diaphragm 31 around the pressure sensing diaphragm 31 that sets up in pressure differential response frame 3, avoid solid particle to cause the influence to the normal work of device.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a differential pressure transmitter with safety protection, includes connecting seat (1), with connecting seat (1) looks fixed connection's work frame (2), signal output device (5) and orifice plate (6), its characterized in that: the left side and the right side of the connecting seat (1) are both rotatably connected with a rotating rod (4), the inside of the rotating rod (4) is slidably connected with a sliding rod (41) which penetrates through the bottom of the rotating rod (4) and is connected with the rotating rod (4) through a connecting spring (42), the position on the surface of the sliding rod (41) close to the bottom is connected with a fixing bolt (43) which penetrates through the left side and the right side of the sliding rod (41) through threads, the inside of the working frame (2) is provided with a pressure difference induction frame (3) and a pressure sensing diaphragm (31) is arranged inside the pressure difference induction frame (3), the left side and the right side of the pressure difference induction frame (3) are both fixedly connected with a connecting pipe (32), the left side and the right side of the pore plate (6) are both fixedly connected with a connecting frame (61) and the left side of the pore plate (6) is connected with an installing frame (62) through bolts, the inside of the left side connecting frame (61) of the pore plate (6) is movably connected with a filtering frame (7), the right side of the filter frame (7) is fixedly connected with filter screens (71) which penetrate through the left side and the right side of the filter frame (7).

2. The secured differential pressure transmitter of claim 1, wherein: the bottom of the working frame (2) is in threaded connection with the top of the signal output device (5), the top of the signal output device (5) is provided with a connecting wire (52), and the top end of the connecting wire (52) is located inside the working frame (2) and electrically connected with the differential pressure induction frame (3).

3. The secured differential pressure transmitter of claim 1, wherein: the top of connecting pipe (32) runs through the top of connecting seat (1) and the bottom of connecting frame (61) simultaneously and is located the inside of connecting frame (61), connecting pipe (32) position that the pressure differential response frame (3) left and right sides set up respectively with the position of orifice plate (6) left and right sides connecting frame (61) corresponding.

4. The secured differential pressure transmitter of claim 1, wherein: the inside of orifice plate (6) is seted up and is link up the spread groove of left and right sides, and the holistic shape structure of this spread groove is round platform type structure and the left shape size of spread groove is greater than the shape size on spread groove right side.

5. The secured differential pressure transmitter of claim 1, wherein: the left side and the right side of the signal output device (5) are fixedly connected with connecting plates (51), the position of the fixing bolt (43) corresponds to the position of the connecting plates (51), and one end, close to the signal output device (5), of the fixing bolt (43) is connected with the connecting plates (51) through threads.

6. The secured differential pressure transmitter of claim 1, wherein: the shape and size of the filter screen (71) are matched with the shape and size of the inside of the connecting frame (61), and the shape and size of the inside of the filter frame (7) are larger than the shape and size of the surface of the filter screen (71).