An electrical instrument convenient for installation and maintenance

Abstract

The application discloses an electrical instrument convenient to install and maintain, which comprises a pressure gauge, a flange and a sealing device; the pressure gauge is connected to a pipeline through the flange; the sealing device comprises a driving connection assembly and two semicircular fixed clamping grooves, one end of the driving connection assembly is rotationally connected to one semicircular fixed clamping groove, and the other end is clamped to the other semicircular fixed clamping groove, so that the two semicircular fixed clamping grooves are spliced to form an annular clamping groove; the annular clamping groove is used for clamping the flange and the pipeline; the inner side of the semicircular fixed clamping groove is slidably provided with a movable sealing piece along the radial direction of the semicircular fixed clamping groove; the outer side of the driving connection assembly is provided with a limiting assembly; the limiting assembly penetrates through the driving connection assembly along the radial direction of the semicircular fixed clamping groove and is embedded into the outer side of the semicircular fixed clamping groove. The stability and practicability of the existing installation device of the electronic instrument are improved, the electrical instrument is more convenient to install and maintain, the loosening of the connecting plate is avoided, and the practicability and stability of the device are improved.

Description

Technical Field

[0001] This application relates to the field of electrical instrumentation technology, and in particular to an electrical instrument that is easy to install and maintain. Background Technology

[0002] Electrical instruments are a class of specialized monitoring devices designed based on electrical principles. Their core function is to achieve real-time monitoring and data acquisition of the operating status of electrical systems through components such as sensors and signal processing modules. By converting and processing electrical signals, electrical instruments provide crucial data support for equipment operation monitoring, fault diagnosis, and system optimization, and are widely used in various technical fields such as industry, energy, and construction.

[0003] For the installation of electrical instruments, existing technologies mostly use clips or screws on both sides of the electronic instrument housing, or bolts and nuts to fix the electronic instrument to the target position such as control cabinet, instrument panel, bracket, etc.

[0004] For example, Chinese utility model patent CN214893834U discloses an electrical instrument that is easy to install and maintain. It includes a pressure gauge, a flange, and a pipe. The bottom of the pipe on the pressure gauge is mounted on the flange, and the bottom of the flange is mounted on the pipe via a sealing connection assembly. The sealing connection assembly seals the connection between the flange and the pipe. This device mainly utilizes two semi-circular rings fixed together by screws, nuts, and connecting plates to form a circular plate. The bottom of the flange is fixed to the circular plate with screws. With the cooperation of the screws, connecting plates, and nuts, the Teflon tape in the circular fixing groove formed by the two semi-circular fixing grooves on the circular plate seals the interface between the flange and the pipe, thus shortening installation and maintenance time and improving efficiency during installation and disassembly. This fixing method uses a nut to apply pressure to the connecting piece, causing it to adhere to the semi-circular ring. However, the circular shape of the semi-circular ring results in a line contact between it and the connecting piece, limiting friction. When the connecting piece is subjected to external impact or a high water flow rate in the pipe, the resulting vibration can cause it to move circumferentially along the screw, leading to loosening and detachment from the semi-circular ring. Furthermore, the Teflon tape is adhered to the fixing groove; when the groove is deep, it's inconvenient for workers to apply the tape. Therefore, its practicality is not ideal, and there is room for improvement. Utility Model Content

[0005] This application provides an electrical instrument that is easy to install and maintain, thus solving the problem of low stability and practicality of existing electronic instrument installation devices.

[0006] In a first aspect, this utility model provides an electrical instrument that is easy to install and maintain, including a pressure gauge, a flange, and a sealing device; the pressure gauge is connected to a pipeline via the flange; the sealing device includes a drive connection assembly and two semi-circular fixing slots, one end of the drive connection assembly is rotatably connected to one of the semi-circular fixing slots, and the other end of the drive connection assembly is engaged with the other semi-circular fixing slot, so that the two semi-circular fixing slots are joined to form an annular slot; the annular slot is used to engage the flange and the pipeline; a movable sealing element is slidably provided on the inner side of the semi-circular fixing slot along its own radial direction; a limiting component is provided on the outer side of the drive connection assembly; the limiting component passes through the drive connection assembly along the radial direction of the semi-circular fixing slot and is embedded in the outer side of the semi-circular fixing slot.

[0007] In conjunction with the first aspect, in one possible implementation, the outer surface of the sidewalls at both ends of the semicircular fixing slot is respectively provided with screws parallel to the connecting surfaces of the two semicircular fixing slots; a first insertion hole is provided on the outer side of the end of the semicircular fixing slot near the screws; the first insertion hole is embedded and connected to the limiting component.

[0008] In conjunction with the first aspect, in one possible implementation, the outer wall of the semi-circular fixing groove away from the screw is provided with a through hole; the through hole is penetrated by the movable seal to restrict the movement direction of the movable seal.

[0009] In conjunction with the first aspect, in one possible implementation, the drive connection assembly includes a connecting plate and a nut; one end of the connecting plate is provided with a second insertion hole, the other end is provided with a plurality of U-shaped grooves with the same opening direction, and a third insertion hole is provided in the middle; the second insertion hole is rotatably connected to a screw of one of the semi-circular fixing slots; the U-shaped groove is engaged with a screw of another semi-circular fixing slot and is fastened by the nut.

[0010] In conjunction with the first aspect, in one possible implementation, the limiting component includes a drive plate and a fixing rod; the drive plate is provided with a plug rod parallel to the connecting surface of the two semi-circular fixing slots, the drive plate is provided with a fourth insertion hole on one side of the plug rod, the plug rod passes through the third insertion hole and is embedded in and passes through the first insertion hole; the fixing rod passes through the fourth insertion hole and is embedded in the connecting plate.

[0011] In conjunction with the first aspect, in one possible implementation, a spring is provided on the side of the drive plate where the plug rod is located at the fourth plug hole, and the other end of the spring is connected to the outside of the connecting plate.

[0012] In conjunction with the first aspect, in one possible implementation, the plug rod is disposed on both sides of the fourth socket and has an anti-slip layer on its surface.

[0013] In conjunction with the first aspect, in one possible implementation, the connecting plate has two third insertion holes in the middle, and a mounting groove is provided between the two third insertion holes for embedding and connecting with the fixing rod.

[0014] In conjunction with the first aspect, in one possible implementation, the movable seal includes a movable rod and a sealing part; the movable rod is fixedly connected to the sealing part through a through hole in the side wall of the semi-circular fixed groove and slides along the height direction of the through hole; the sealing part is accommodated in the annular groove and has a flexible water-resistant layer on the side away from the movable rod.

[0015] In conjunction with the first aspect, in one possible implementation, the upper edge of the semi-circular fixing slot is provided with multiple connecting screw holes, the connecting screw holes corresponding to the screw holes of the flange, and a threaded connection is made by passing a screw through the slot.

[0016] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages: This invention, through its movable sealing element, facilitates the application of sealing tape; and through its driving connection assembly, it prevents the connecting plate from loosening. It effectively solves the problems of low stability and practicality in existing electronic instrument installation devices, thereby enabling more convenient installation and maintenance of electrical instruments. When sealing tape needs to be applied, simply push the movable sealing element, and then use the driving connection assembly to engage with a semi-circular fixed slot, preventing the connecting plate from loosening, thus improving the practicality and stability of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional diagram of an electrical instrument that is easy to install and maintain, provided as an embodiment of this application; Figure 2 A partial enlarged view of an electrical instrument that is easy to install and maintain, provided as an embodiment of this application; Figure 3 Example diagram of the driver connection component provided in the embodiments of this application; Figure 4 Example diagram of the active seal provided in the embodiments of this application; Figure 5Example diagram of the driver board provided in the embodiments of this application; Figure 6 An example diagram of a semi-circular fixing slot provided in an embodiment of this application.

[0019] Reference numerals: 1-Pressure gauge; 2-Pipeline; 3-Flange; 4-Sealing device; 41-Semi-circular fixing groove; 411-Screw; 412-First insertion hole; 413-Through hole; 414-Connecting screw hole; 42-Drive connection assembly; 421-Drive plate; 4211-Insertion rod; 4212-Fourth insertion hole; 4213-Spring; 422-Connecting plate; 4221-Second insertion hole; 4222-U-shaped groove; 4223-Third insertion hole; 423-Fixing rod; 43-Modible seal; 431-Modible rod; 432-Sealing part. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0021] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0022] like Figure 1As shown, an electrical instrument that is easy to install and maintain includes a pressure gauge 1, a flange 3, and a sealing device 4. The pressure gauge 1 is connected to a pipe 2 via the flange 3. The sealing device 4 includes a drive connection assembly 42 and two semi-circular fixing slots 41. One end of the drive connection assembly 42 is rotatably connected to one of the semi-circular fixing slots 41, and the other end of the drive connection assembly 42 is engaged with the other semi-circular fixing slot 41, so that the two semi-circular fixing slots 41 are joined to form an annular slot. The annular slot is used to engage the flange 3 and the pipe 2. The characteristic feature is that a movable sealing element 43 is slidably provided on the inner side of the semi-circular fixing slot 41 along its own radial direction. A limiting component is provided on the outer side of the drive connection assembly 42. The limiting component passes through the drive connection assembly 42 along the radial direction of the semi-circular fixing slot 41 and is embedded in the outer side of the semi-circular fixing slot 41.

[0023] In this embodiment, screws 411 parallel to the connecting surfaces of the two semicircular fixing slots 41 are respectively provided on the outer surface of the sidewalls at both ends of the semicircular fixing slots 41. A first insertion hole 412 is provided on the outer side of the end of the semicircular fixing slot 41 near the screws 411. The first insertion hole 412 is embedded and connected to the limiting component.

[0024] Furthermore, a through hole 413 is provided on the outer wall of the semi-circular fixing groove 41 away from the screw 411. The through hole 413 is penetrated by the movable seal 43 to restrict the movement direction of the movable seal 43.

[0025] For example, three through holes 413 can be provided on the side wall of each semicircular fixing slot 41, and two connecting screw holes 414 can be provided on the upper edge of each semicircular fixing slot 41.

[0026] In this embodiment, the drive connection assembly 42 includes a connecting plate 422 and a nut. One end of the connecting plate 422 has a second insertion hole 4221, the other end has multiple U-shaped grooves 4222 with the same opening direction, and a third insertion hole 4223 is located in the middle. The second insertion hole 4221 is rotatably connected to a screw 411 in a semi-circular fixing slot 41. The U-shaped groove 4222 engages with the screw 411 in another semi-circular fixing slot 41 and is secured by a nut.

[0027] In this embodiment, the limiting component includes a drive plate 421 and a fixing rod 423. The drive plate 421 has a plug-in rod 4211 parallel to the connecting surfaces of the two semi-circular fixing slots 41. The drive plate 421 has a fourth insertion hole 4212 on one side of the plug-in rod 4211. The plug-in rod 4211 passes through a third insertion hole 4223 and is embedded in and through the first insertion hole 412. The fixing rod 423 passes through the fourth insertion hole 4212 and is embedded in a connecting plate 422.

[0028] Furthermore, a spring 4213 is provided on the side of the drive plate 421 where the plug rod 4211 is located at the fourth socket 4212, and the other end of the spring 4213 is connected to the outside of the connecting plate 422. The plug rod 4211 is located on both sides of the fourth socket 4212, and its surface is provided with an anti-slip layer.

[0029] In this embodiment, the movable seal 43 includes a movable rod 431 and a sealing portion 432. The movable rod 431 is fixedly connected to the sealing portion 432 through a through hole 413 in the side wall of the semi-circular fixed groove 41, and slides along the height direction of the through hole 413. The sealing portion 432 is accommodated in an annular groove, and a flexible water-resistant layer is provided on the side away from the movable rod 431.

[0030] Specifically, the flexible water-resistant layer here can be made of rubber material, so that when the two semi-circular fixed slots 41 are assembled, the movable seal 43 is tightly wrapped around the connection between the flange 3 and the pipe 2 under force. The rubber material will shrink and deform to a certain extent, so that the sealing tape adheres to the connection between the flange 3 and the pipe 2.

[0031] Furthermore, the connecting plate 422 has two third insertion holes 4223 in the middle, and a mounting groove is provided between the two third insertion holes 4223 for embedding and connecting with the fixing rod 423.

[0032] In practical use, the sealing part 432 of the movable seal 43 is located inside the groove of the semi-circular fixed groove 41. By pushing the movable rod 431 of the movable seal 43, the sealing part 432 can move radially in the semi-circular fixed groove 41, which can push the sealing part 432 out of the groove of the semi-circular fixed groove 41, making it convenient to install sealing tape on the inside of the sealing part 432.

[0033] Two semi-circular fixing slots 41 are connected together by a drive connecting assembly 42 to form an annular slot. The inner diameter of the semi-circular fixing slot 41 transitions to the outer diameter of the flange 3, meaning the flange 3 has only a small gap within the annular slot. One end of the drive connecting device is rotatably connected to one semi-circular fixing slot 41. In one embodiment, this can be a threaded connection, where the screw 411 of one semi-circular fixing slot 41 passes through the second insertion hole 4221 of the connecting plate 422 and is then tightened with a nut. The other end of the drive connecting device engages with the other semi-circular fixing slot 41, where the screw 411 of the other semi-circular fixing slot 41 engages with a U-shaped groove 4222 on the connecting plate 422 and is then tightened with a nut. When the sealing tape needs to be replaced, only the nuts on both sides need to be slightly loosened to lift the connecting plate 422, allowing the two semi-circular fixing slots 41 to separate, making operation more convenient.

[0034] A spring 4213 is provided between the connecting plate 422 and the drive plate 421. The drive plate 421 has a fourth insertion hole 4212 inside the connection point of the spring 4213. Two insertion rods 4211 are provided on both sides of the spring 4213. In practical applications, the spring 4213 pushes the drive plate 421 closer to the connecting plate 422, and at the same time drives the insertion rods 4211 to pass through the third insertion hole 4223. Then, the insertion rods 4211 are inserted into the first insertion hole 412, so that the connecting plate 422 is limited on the semi-circular fixing groove 41, and the connecting plate 422 and the semi-circular fixing groove 41 are fixed together.

[0035] The mounting groove of the connecting plate 422 is used to connect the fixing rod 423. The fixing rod 423 passes through the outer side wall of the drive plate 421 and the connecting plate 422. The fixing rod 423 is located at the center of the spring 4213. It can guide the drive plate 421 and prevent the drive plate 421 from moving too far to the outside of the connecting plate 422, which would cause the plug rod 4211 to detach from the first plug hole 412.

[0036] The plug rod 4211 is made of a sturdy metal material. The metal material is hard and the outside of the plug rod 4211 is coated with an anti-slip layer, which can improve the friction between the plug rod 4211 and the first socket 412 and the third socket 4223.

[0037] In use, the operator pushes the movable rod 431 of the movable seal 43 towards the slot, causing the sealing part 432 inside the slot to slide outward from the semi-circular fixed slot 41. When it slides beyond the upper edge of the semi-circular fixed slot 41, the operator applies sealing tape to the side wall of the sealing part 432, and then pulls the movable rod 431 to move the sealing part 432 into the slot and attach it to the side wall of the slot. Next, install the semi-circular fixing slot 41 on the flange 3 and the pipe 2, and fix the two together. Rotate the connecting plate 422 so that the U-shaped groove 4222 at one end of the connecting plate 422 engages with the screw 411 of the other semi-circular fixing slot 41. Rotate the nut to push the connecting plate 422 closer to the semi-circular fixing slot 41. At the same time, the insertion rod 4211, which passes through the third insertion hole 4223 of the connecting plate 422, moves closer to the first insertion hole 412 of the semi-circular fixing slot 41 until it is inserted into the first insertion hole 412 and one end of the connecting plate 422 is tightly pressed against the semi-circular fixing slot 41, thus fixing the two together. At this point, the installation is complete.

[0038] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0039] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. An electrical instrument that is easy to install and maintain, comprising a pressure gauge (1), a flange (3), and a sealing device (4); the pressure gauge (1) is connected to a pipe (2) via the flange (3); the sealing device (4) comprises a drive connection assembly (42) and two semi-circular fixing slots (41), one end of the drive connection assembly (42) being rotatably connected to one of the semi-circular fixing slots (41), and the other end of the drive connection assembly (42) being engaged with the other semi-circular fixing slot (41), so that the two semi-circular fixing slots (41) are joined together to form an annular slot; the annular slot is used to engage the flange (3) and the pipe (2); characterized in that, The inner side of the semicircular fixing groove (41) is provided with a movable seal (43) that slides along its own radial direction; the outer side of the drive connection assembly (42) is provided with a limiting assembly; the limiting assembly passes through the drive connection assembly (42) along the radial direction of the semicircular fixing groove (41) and is embedded in the outer side of the semicircular fixing groove (41).

2. The electrical instrument that is easy to install and maintain according to claim 1, characterized in that, The outer surface of the side wall at both ends of the semicircular fixing slot (41) is provided with screws (411) that are parallel to the connecting surfaces of the two semicircular fixing slots (41). The semi-circular fixing slot (41) is provided with a first insertion hole (412) on the outer side of the end near the screw (411). The first jack (412) is embedded and connected to the limiting component.

3. The electrical instrument that is easy to install and maintain according to claim 2, characterized in that, The semi-circular fixing groove (41) has a through hole (413) on its outer side wall away from the screw (411). The through hole (413) is penetrated by the movable seal (43) to restrict the movement direction of the movable seal (43).

4. The electrical instrument that is easy to install and maintain according to claim 2, characterized in that, The drive connection assembly (42) includes a connecting plate (422) and a nut; The connecting plate (422) has a second insertion hole (4221) at one end and multiple U-shaped grooves (4222) with the same opening direction at the other end, and a third insertion hole (4223) in the middle. The second insertion hole (4221) is rotatably connected to a screw (411) of one of the semi-circular fixing slots (41). The U-shaped groove (4222) is engaged with the screw (411) of another semi-circular fixing slot (41) and is fastened by the nut.

5. The electrical instrument that is easy to install and maintain according to claim 4, characterized in that, The limiting component includes a drive plate (421) and a fixing rod (423). The drive plate (421) is provided with a plug rod (4211) parallel to the connecting surface of the two semi-circular fixing slots (41). The drive plate (421) is provided with a fourth plug hole (4212) on one side of the plug rod (4211). The plug rod (4211) passes through the third plug hole (4223) and is embedded in and passes through the first plug hole (412). The fixing rod (423) passes through the fourth insertion hole (4212) and is embedded in the connecting plate (422).

6. The electrical instrument that is easy to install and maintain according to claim 5, characterized in that, A spring (4213) is provided on the side of the drive plate (421) where the plug rod (4211) is located at the fourth plug hole (4212), and the other end of the spring (4213) is connected to the outside of the connecting plate (422).

7. The electrical instrument that is easy to install and maintain according to claim 5, characterized in that, The plug rod (4211) is located on both sides of the fourth plug hole (4212) and has an anti-slip layer on its surface.

8. The electrical instrument that is easy to install and maintain according to claim 5, characterized in that, The connecting plate (422) has two third insertion holes (4223) in the middle, and an installation groove is provided between the two third insertion holes (4223). The installation groove is used to embed and connect with the fixing rod (423).

9. The electrical instrument that is easy to install and maintain according to claim 1, characterized in that, The movable seal (43) includes a movable rod (431) and a sealing part (432). The movable rod (431) passes through the through hole (413) in the side wall of the semi-circular fixed slot (41) and is fixedly connected to the sealing part (432), and slides along the height direction of the through hole (413); The sealing part (432) is accommodated in the annular groove, and a flexible water-resistant layer is provided on the side away from the movable rod (431).

10. The electrical instrument that is easy to install and maintain according to claim 1, characterized in that, The upper edge of the semi-circular fixing groove (41) is provided with multiple connecting screw holes (414). The connecting screw holes (414) correspond to the screw hole positions of the flange (3) and are threadedly connected by a screw rod (411) passing through them.

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