CN220120289U - Pressure transmitter - Google Patents

Abstract

The utility model relates to a pressure transmitter, which comprises a machine body, a shell and an adapter; the machine body is positioned in the shell; the shell is provided with a signal interface and a pressure measuring interface, the machine body is suitable for being electrically connected with the measuring terminal through the signal interface to carry out communication, and the machine body is suitable for being connected with a pressure port to be measured through the pressure measuring interface to carry out pressure detection; one end of adapter can dismantle with the pressure measurement interface of shell and be connected, and the other end of adapter is equipped with first external screw thread, first external screw thread and pressure mouth phase-match that awaits measuring, and the adapter is applicable to through first external screw thread and the threaded connection of pressure mouth that awaits measuring, and the adapter is hollow structure, and the pressure measurement interface is through the hollow structure of adapter and the pressure mouth intercommunication that awaits measuring. Compared with the existing pressure transmitter which can only be matched with a pressure port to be measured with one caliber, the utility model allows a worker to simply and quickly detach and replace the adapter with the corresponding size, so that the pressure transmitter can be matched and connected with pressure measuring ports with different specifications, and the application range of the pressure transmitter is enlarged.

Description

Pressure transmitter

Technical Field

The utility model relates to the technical field of pressure measuring tools, in particular to a pressure transmitter.

Background

The pressure transmitter is a device for converting pressure into electric signals for control and remote transmission, and can convert physical pressure parameters of gas, liquid and the like sensed by the load cell sensor into standard electric signals for supplying to secondary instruments such as an indication alarm instrument, a recorder, a regulator and the like for measurement, indication and process adjustment.

Existing pressure transmitters are typically connected to the desired pressure tap by a threaded joint, but the threaded joint of the pressure transmitter is typically of unitary construction with the pressure transmitter housing. In practical application, when pressure measuring ports with different aperture specifications are connected, the pressure transmitter with the matched aperture needs to be replaced to be installed, for example, patent document CN204964076U, which leads to a reduction in the application range of the pressure transmitter.

Therefore, how to enable the pressure transmitter to match pressure measuring ports with different specifications is a problem to be solved urgently in the art.

Disclosure of Invention

In order to enable the pressure transmitter to be matched with pressure measuring ports of different specifications, the utility model provides the pressure transmitter.

In order to achieve the object of the present utility model, there is provided a pressure transmitter comprising:

the device comprises a machine body, a shell and an adapter;

the machine body is positioned inside the shell;

the shell is provided with a signal interface and a pressure measuring interface, the machine body is suitable for being electrically connected with the measuring terminal through the signal interface so as to communicate, and the machine body is suitable for being connected with a pressure port to be measured through the pressure measuring interface so as to detect pressure;

one end of the adapter is detachably connected with the pressure measuring interface of the shell, a first external thread is arranged at the other end of the adapter, the first external thread is matched with the pressure port to be measured, the adapter is applicable to threaded connection of the first external thread and the pressure port to be measured, the adapter is of a hollow structure, and the pressure measuring interface is communicated with the pressure port to be measured through the hollow structure of the adapter.

In one possible implementation, the middle part of the adapter is provided with a protrusion, and the first external thread is located at one side of the protrusion.

In one possible implementation manner, the protrusion is arranged on the middle outer side wall of the adapter in a surrounding manner, the end face of the protrusion is polygonal, and the protrusion is consistent with the central line of the first external thread.

In one possible implementation, the adapter is screwed to the pressure measuring interface of the housing.

In one possible implementation manner, the opposite ends of the adapter are respectively provided with a first internal thread and a first external thread, the pressure measuring interface of the housing is provided with a second external thread, and the first internal thread is matched with the second external thread.

In one possible implementation, the body is provided with a display instrument, the display instrument is provided with a display screen, and the display screen is located on the outer side wall of the housing.

In one possible implementation, the device further comprises a protective shell;

the protective housing covers the display screen sets up, the protective housing is equipped with the observation window, the display screen with the observation window sets up relatively.

In one possible implementation, the protective shell is detachably connected with the housing, and an anti-slip part is arranged on one side of the protective shell, which faces away from the housing.

In one possible implementation, the device further comprises an upper cover;

and one side of the shell is provided with a mounting hole, and the upper cover is detachably connected with the mounting hole of the shell.

In one possible implementation, the device further comprises a plug;

the shell is provided with an explosion-proof interface, and the plug is detachably connected with the explosion-proof interface of the shell.

According to the utility model, the adapter is arranged, and two ends of the adapter are detachably connected with the pressure port to be tested and the shell respectively, so that compared with the existing pressure transmitter which can only be matched with the pressure port to be tested with one caliber, the adapter with the corresponding size can be simply and rapidly detached and replaced by a worker, and therefore, the pressure transmitter can be matched and connected with the pressure ports with different specifications, and the application range of the pressure transmitter is enlarged.

Drawings

FIG. 1 shows a schematic structural view of a pressure transducer according to an embodiment of the present utility model;

FIG. 2 shows a schematic structural view of a pressure transducer according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing the structure of a pressure transducer according to an embodiment of the present utility model;

FIG. 4 shows a partial schematic view of a pressure transducer according to an embodiment of the present utility model;

FIG. 5 shows a cross-sectional view of an adapter according to an embodiment of the present utility model;

fig. 6 shows a schematic structural diagram of an adapter according to an embodiment of the present utility model.

Detailed Description

Various exemplary embodiments, features and aspects of the utility model will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood, however, that the terms "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model or simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In addition, numerous specific details are set forth in the following description in order to provide a better illustration of the utility model. It will be understood by those skilled in the art that the present utility model may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present utility model.

FIG. 1 shows a schematic structural view of a pressure transducer according to an embodiment of the present utility model; FIG. 2 shows a schematic structural view of a pressure transducer according to an embodiment of the present utility model; FIG. 3 shows a schematic structural view of a pressure transducer according to an embodiment of the present utility model; FIG. 4 shows a partial schematic view of a pressure transducer according to an embodiment of the present utility model; FIG. 5 illustrates a cross-sectional view of an adapter according to an embodiment of the present utility model; fig. 6 shows a schematic structural diagram of an adapter according to an embodiment of the utility model.

As shown in fig. 1, the pressure transmitter includes: the device comprises a machine body, a shell and an adapter; the machine body is positioned in the shell; the body is provided with a signal interface 210, the signal interface 210 is suitable for being electrically connected with a measurement terminal, and the signal interface 210 is positioned at one end of the shell; the pressure measurement end of organism sets up towards the other end of shell, and the one end that the shell deviates from signal connection portion 311 is equipped with first internal thread 330, and the adapter is hollow structure, i.e. the axial of adapter along the external screw thread is equipped with the through-hole. The middle part of adapter is equipped with protruding 320, and the relative both ends of adapter are equipped with the external screw thread, and the external screw thread and the first internal screw thread 330 phase-match of adapter one end, and the one end and the shell of adapter are connected, and the other end of adapter is applicable to and awaits measuring to press mouthful phase-match and carry out threaded connection.

The utility model completes the transmitting function of the pressure transmitter by arranging the machine body; providing a mounting foundation for the machine body by arranging the shell; the signal transmission function is realized by setting the signal interface 210. Through setting up the adapter, adapter hollow structure, the organism can contact and respond to the pressure value of waiting the pressure measurement mouth through the pressure measurement interface.

According to the utility model, the adapter is arranged, and two ends of the adapter are detachably connected with the pressure port to be tested and the shell respectively, so that compared with the existing pressure transmitter which can only be matched with the pressure port to be tested with one caliber, the adapter with the corresponding size can be simply and rapidly detached and replaced by a worker, and therefore, the pressure transmitter can be matched and connected with the pressure ports with different specifications, and the application range of the pressure transmitter is enlarged.

And the existing pressure transmitter can only meet the connection requirements of pressure measurement ports to be measured with different aperture specifications by replacing the whole pressure transmitter, so that the application range of the pressure transmitter can be reduced, and the use cost can be increased. According to the utility model, the adapter can be quickly disassembled and replaced to match the pressure ports to be tested with different sizes, so that a worker can match the pressure transmitter with the pressure ports to be tested with different specifications only by partially replacing the adapter, the machine body and the shell part of the pressure transmitter can be continuously used, and the use cost can be reduced.

In one possible implementation, the middle of the adapter is provided with a protrusion 320, and the first external thread 310 is located on one side of the protrusion 320. At the root of the first external thread 310, the protrusion 320 and the pressure port to be measured are respectively located at both ends of the first external thread 310. The middle part of the utility model is fixedly provided with the bulge 320, so that the utility model is convenient for holding force when the adapter is detachably connected with the pressure port to be tested and the shell.

In one possible implementation manner, the middle outer side wall of the adapter is provided with a protrusion 320 in a surrounding manner, the protrusion 320 is fixedly connected with the outer side wall of the adapter, the end face of the protrusion 320 is polygonal, friction force is increased by utilizing the polygonal side edges to facilitate the application of force by a worker, and the protrusion 320 is consistent with the central line of the first external thread 310 in orientation. Specifically, the outer sidewall of the protrusion 320 has a regular hexagon shape and a hexagonal nut shape. According to the utility model, the hexagonal nut-shaped protrusion 320 is annularly arranged on the outer side wall of the adapter, so that the adapter can be twisted to be connected by using tools such as a wrench in threaded connection, and the operation is simple.

Further, a gripping portion is further provided on a side of the protrusion 320 facing away from the first external thread 310, so as to be convenient for an operator to grip by hand, and the gripping portion is an annular groove.

In one possible implementation, the adapter is more than two, the diameters of the first external threads 310 of the more than two adapters are different, and the more than two adapters are suitable for matching with more than two conventional-caliber pressure ports to be tested. Further, the number of the adapters is three, the adapters comprise a first adapter, a second adapter and a third adapter, and the three adapters are suitable for being matched with the to-be-tested pressure ports with three conventional calibers.

In one possible implementation, as shown in fig. 6, the end of the adapter provided with the first external thread 310 is integrally stepped. The step structure of the adapter refers to that the first external thread 310 is divided into more than two layers of connecting portions 311, and each layer of connecting portion 311 is provided with external threads. The midlines of the two or more layers of connection portions 311 coincide. The radius of the step structure of the adapter is gradually decreased, the radius of the layer-by-layer decreasing, the radius of the layer of connecting part 311 which is closer to the shell is larger, and the radius of the layer of connecting part 311 which is farther from the shell is smaller. The ladder structure of adapter is applicable to with the pressure measurement mouth phase-match of different bore specifications. According to the utility model, the external threads with different radiuses are arranged at one end of the adapter, so that the external threads of the connecting parts 311 of each layer can be matched with the pressure ports to be measured with various calibers, and the external thread radius of each layer is set according to the conventional caliber of the common pressure port to be measured, so that the connection requirement of the pressure port to be measured is met.

Further, a sealing ring is sleeved on the root of each external thread, and the root of each external thread refers to one end of each external thread close to the protrusion 320. After the installation is finished, the sealing ring is positioned between the port to be measured and the adapter, so that the air tightness is increased, and the detection accuracy is ensured.

In one possible implementation, the sealing ring is an O-ring.

In one possible implementation, the adapter is screwed to the pressure tap of the housing.

In one possible implementation, the opposite ends of the adapter are respectively provided with a first internal thread 330 and a first external thread 310, and the adapter is provided with a through hole along the centerline direction of the first external thread 310 and the first internal thread 330. The pressure tap of the housing is provided with a second external thread 220, and the first internal thread 330 is matched with the second external thread 220.

In one possible implementation, the body includes a pressure sensor, a display meter, a pressure transmitter body; the pressure measuring end of the pressure sensor is connected with one end of the adapter through a pressure measuring interface so as to sense the pressure value of the pressure measuring interface. The output end of the pressure sensor is respectively and electrically connected with the input ends of the display instrument and the pressure transmitter body. The display instrument is provided with a display screen 110, and the display screen 110 is positioned on the outer side wall of the housing and is arranged towards the staff to display the measured pressure value. The output end of the pressure transmitter body is electrically connected with a measuring terminal or a secondary instrument through a signal interface 210, and the pressure transmitter body is arranged to convert sensed physical pressure parameters such as gas, liquid and the like into standard electric signals so as to supply the secondary instruments such as an indication alarm instrument, a recorder, a regulator and the like for measurement, indication and process adjustment.

In one possible implementation, the housing is overall T-shaped, with an internal cavity at the three-terminal junction of the housing T-shaped structure, and the body is located in the internal cavity therein. The opposite ends of the housing T-shaped structure are provided with a signal interface 210 and a plug 360, respectively, and the remaining end of the housing T-shaped structure is detachably connected with the adapter. The outer side wall of the remaining end of the T-shaped structure of the shell is also fixedly provided with a protrusion 320, the protrusion 320 of the shell is consistent with the protrusion 320 of the adapter, and the protrusion 320 of the shell is arranged close to the adapter. The T-shaped shell is arranged, and the section of the shell, which is close to the adapter, is provided with the bulge 320, so that the force can be applied conveniently, and the screwing-in and screwing-out operation of the threaded connection can be performed.

Further, the protrusions 320 of the adapter and the shell are annular protrusions, and the outer side walls of the protrusions 320 of the adapter and the shell are hexagonal nuts, so that the adapter can be twisted by using tools such as a wrench to connect conveniently in threaded connection, and the operation is simple.

In one possible implementation, the middle of the adapter is provided with a protrusion 320, and the first external thread 310 is located on one side of the protrusion 320. The root of the first external thread 310 is sleeved with a sealing ring, namely, one end of the adapter bulge 320, which is away from the shell, is provided with the sealing ring, and the sealing ring is positioned between the bulge 320 and the pressure port to be measured after the installation is completed.

The root of the second external thread 220 is also sleeved with a sealing ring, and one end of the second external thread 220, which is away from the sealing ring, is screwed into the first internal thread 330. The length of the first internal thread 330 is equal to or greater than that of the second external thread 220, so as to ensure that the sealing ring of the second external thread 220 abuts against the outer side wall of one end of the adapter after the installation is completed, and realize the sealing connection between the shell and the adapter. This seal is now located between the boss 320 and the housing. According to the utility model, the sealing ring is arranged, so that the air tightness of the joint of the adapter and other parts is ensured, and the accuracy of pressure detection is further ensured.

Further, as shown in fig. 5, the first internal thread 330 and the first external thread 310 are respectively located at two opposite sides of the protrusion 320 of the adapter, and an annular groove matched with the sealing ring is provided on one side surface of the protrusion 320 of the adapter, which is close to the first external thread 310. The housing is provided with an annular groove matching the sealing ring, the annular groove of the housing being located at the end of the second external thread 220 facing away from the first external thread 310. The sealing collar of the housing is disposed about the end of the second external thread 220 facing away from the first external thread 310 and is disposed within the annular recess of the housing. Further, as shown in fig. 1 to 3, the protrusion 320 of the housing is disposed adjacent to the second external thread 220, the protrusion 320 of the housing is located at one end of the second external thread 220 facing away from the first external thread 310, the protrusions 320 of the housing and the adapter are both annular protrusions 320, the outer side walls of the protrusions 320 are both hexagonal nuts, the annular grooves are located at one side surface of the housing protrusion 320 adjacent to the first external thread 310, that is, the two protrusions 320 are both provided with annular grooves along the circumference of the external thread, and sealing rings are disposed in the annular grooves of the two protrusions 320.

In one possible implementation, the body is provided with a display instrument; the display instrument is provided with a display screen 110, and the display screen 110 is positioned on the outer side wall of the shell. The utility model visually displays the detection pressure value on the detection site by arranging the display screen 110, which is beneficial to the staff to judge the working state on site and carry out corresponding adjustment and hazard investigation. Further, the display meter is provided with a digital display 110.

In one possible implementation, as shown in fig. 2, a protective shell 340 is also included; the protective housing 340 covers the display screen 110 and sets up, and the protective housing 340 is equipped with the observation window, and the display screen 110 sets up with the observation window relatively. The display screen 110 is usually a fragile product, and the protective shell 340 is additionally arranged to eliminate potential damage to the display screen 110 caused by the detection site condition, and the observation window is additionally arranged and adopts explosion-proof glass, so that the detection result can be conveniently read by staff on site.

In one possible implementation, an operation hole is formed in one side of the housing, and the display surface of the display screen 110 faces the outside of the housing through the operation hole. The protective shell 340 is detachably connected to the housing. As shown in fig. 2, an anti-slip part 341 is disposed on one side of the protective shell 340 facing away from the housing, and the anti-slip part 341 is convenient for an operator to hold and detach, and when the inner body of the housing needs to be replaced and detached, the protective cover is detached, and the protective cover enters the inner body from the position of the mounting hole 350.

Further, the protective shell 340 is circular overall, and the anti-slip portion 341 includes more than two circumferentially distributed anti-slip protrusions, which are located at edges of the protective shell 340.

In one possible implementation, the protective shell 340 is bolted to the housing.

In one possible implementation, the protective shell 340 is fastened to the housing, and one end of the protective shell 340 is rotatably connected to the housing.

In one possible implementation, the protective shell 340 is threadably coupled to the operating aperture of the housing.

In one possible implementation, the device further comprises an upper cover; the mounting hole 350 has been seted up to shell one side, and the upper cover is connected with the mounting hole 350 of shell can be dismantled, and mounting hole 350 and operating hole are located the relative both sides of shell respectively, and the upper cover is located the relative both sides of shell with protective housing 340 respectively. When operations such as wiring, replacement, maintenance, disassembly and the like of the machine body in the shell are needed, the upper cover is detached, and the operation is convenient. Further, as shown in fig. 3, the mounting hole 350 is provided with a second internal thread, the upper cover is provided with a third external thread, and the upper cover is screwed with the mounting hole 350.

In one possible implementation, a sealing ring is arranged at the connection part of the mounting hole 350 and the upper cover, so that the air tightness of the connection of the upper cover and the shell is ensured, and the accuracy of the detection result is ensured.

In one possible implementation, as shown in fig. 2 and 3, a plug 360 is further included; the explosion-proof interface is opened to the shell, and the end cap 360 can dismantle with the explosion-proof interface of shell and be connected. In order to ensure the detection accuracy of the pressure transmitter, the pressure transmitter is integrally provided with a sealing device, and the plug 360 is arranged during normal detection by arranging the plug 360 and an explosion-proof interface; the plug 360 is detached when burst danger exists, so that burst in the use process of the pressure transmitter can be effectively prevented, and the service life can be prolonged. Further, a sealing ring is arranged between the plug 360 and the explosion-proof interface, so that the accuracy in normal detection is ensured.

In one possible implementation, plug 360 mates with an explosion-proof interface, and plug 360 plugs into the explosion-proof interface. Pulling the plug 360 rightwards can detach the plug 360 from the shell, and then the threaded upper cover is rotated to release pressure.

In one possible implementation, plug 360 is threadably coupled to the explosion-proof interface.

In one possible implementation, the signal interface 210 is an air plug connector, and the outer sidewall of the signal interface 210 is provided with a fourth external thread, as shown in fig. 2. The aviation plug connector is stable in connection, low in cost and easy to obtain, the fourth external thread is arranged on the outer side wall of the aviation plug connector, the aviation plug connector is connected and simultaneously in threaded connection, the air tightness of connection can be guaranteed, and the pressure resistance of the pressure transmitter is improved.

In one possible implementation, the signal interface 210 is an aviation plug.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A pressure transmitter, comprising:

the device comprises a machine body, a shell and an adapter;

the machine body is positioned inside the shell;

the shell is provided with a signal interface and a pressure measuring interface, the machine body is suitable for being electrically connected with the measuring terminal through the signal interface so as to communicate, and the machine body is suitable for being connected with a pressure port to be measured through the pressure measuring interface so as to detect pressure;

one end of the adapter is detachably connected with the pressure measuring interface of the shell, a first external thread is arranged at the other end of the adapter, the first external thread is matched with the pressure port to be measured, the adapter is applicable to threaded connection of the first external thread and the pressure port to be measured, the adapter is of a hollow structure, and the pressure measuring interface is communicated with the pressure port to be measured through the hollow structure of the adapter.

2. The pressure transmitter of claim 1 wherein the adapter has a boss in a middle portion thereof, the first external thread being located on one side of the boss.

3. The pressure transmitter of claim 2 wherein the central outer sidewall of the adapter is annularly provided with the boss, the end face of the boss is polygonal, and the boss is oriented in line with the midline of the first external thread.

4. The pressure transmitter of claim 1 wherein the adapter is threadably coupled to the pressure tap of the housing.

5. The pressure transmitter of claim 4 wherein the adapter has first internal threads and first external threads at opposite ends thereof, the pressure tap of the housing having second external threads, the first internal threads being mated with the second external threads.

6. The pressure transmitter of claim 1 wherein the body is provided with a display, the display being provided with a display screen, the display being located on an outer sidewall of the housing.

7. The pressure transmitter of claim 6 and further comprising a protective shell;

the protective housing covers the display screen sets up, the protective housing is equipped with the observation window, the display screen with the observation window sets up relatively.

8. The pressure transmitter of claim 7 wherein the protective shell is detachably connected to the housing, the side of the protective shell facing away from the housing being provided with an anti-slip portion.

9. The pressure transmitter of claim 1 and further comprising an upper cover;

and one side of the shell is provided with a mounting hole, and the upper cover is detachably connected with the mounting hole of the shell.

10. The pressure transmitter of claim 9 and further comprising a plug;

the shell is provided with an explosion-proof interface, and the plug is detachably connected with the explosion-proof interface of the shell.