Differential pressure transmitter

Abstract

The utility model relates to the field of detection instruments, and discloses a differential pressure transmitter, which comprises a differential pressure transmitter body provided with a low-pressure side interface and a high-pressure side interface, and further comprises a high-pressure side buffer plate corresponding to the high-pressure side interface, the high-pressure side buffer plate is internally provided with high-pressure interfaces which are oppositely arranged and matched with the high-pressure side interfaces, telescopic pipes which are oppositely arranged and matched with the high-pressure side interfaces and the high-pressure interfaces are arranged between the differential pressure transmitter body and the high-pressure side buffer plate, one ends of the telescopic pipes are connected with the high-pressure interfaces, and the other ends of the telescopic pipes are connected with the high-pressure side interfaces; and the differential pressure transmitter body is provided with a micro damper connected with the high-pressure side buffer plate on the high-pressure side interface. Compared with the prior art, the high-pressure connector has the advantage that the impact force of fluid in a pipeline connected to the high-pressure connector can be buffered.

Description

Technical Field

[0001] The utility model relates to the technical field of detection instruments, in particular to a differential pressure transmitter. Background Art

[0002] The differential pressure transmitter is a self-balancing detection instrument. The differential pressure transmitter can measure the pressure difference between the two ends. The fluid or gas enters the two connection ports of the differential pressure transmitter and forms a differential pressure at the connection ports. The differential pressure transmitter can convert the pressure difference into an electrical signal to achieve accurate measurement and monitoring of the pressure.

[0003] However, during the use of the differential pressure transmitter, one end is the high-pressure side and the other end is the low-pressure side. The fluid impact force from the high-pressure side is large and the impact speed is fast. The high-pressure side interface of the differential pressure transmitter using a rigid connection is subjected to long-term impact during long-term use, which will cause the bolts of the high-pressure side interface to loosen or even fall off. This will cause a gap at the high-pressure side interface, affecting the pressure inside the pipeline, thereby affecting the differential pressure transmitter's detection results of the pressure difference. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The technical problem to be solved by the utility model is that the bolts of the high-pressure side interface of the current differential pressure transmitter are often impacted by the fluid in the pipeline during long-term use, which may cause the bolts to loosen or even fall off, resulting in a gap between the fluid pipeline and the high-pressure side interface, thereby causing inaccurate pressure difference detection results.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a differential pressure transmitter, including a differential pressure transmitter body, the differential pressure transmitter body is provided with a low-pressure side interface and a high-pressure side interface, and also includes a high-pressure side buffer plate corresponding to the high-pressure side interface, the high-pressure side buffer plate is provided with a high-pressure interface that is relatively arranged and cooperates with the high-pressure side interface, a telescopic tube that is relatively arranged and cooperates with the high-pressure side interface and the high-pressure interface is provided between the differential pressure transmitter body and the high-pressure side buffer plate, one end of the telescopic tube is connected to the high-pressure interface, and the other end is connected to the high-pressure side interface, and the differential pressure transmitter body is provided with a micro damper connected to the high-pressure side buffer plate on the high-pressure side interface.

[0008] As an improvement, the differential pressure transmitter body is provided with guide rods which are arranged relatively and penetrate the high-pressure side buffer plate on the high-pressure side interface.

[0009] As an improvement, the guide rod is provided with a limit block cooperating with the high-pressure side buffer plate at one end opposite to the high-pressure side interface.

[0010] As an improvement, the limit block and the guide rod are threadedly connected.

[0011] As an improvement, sealing gaskets are bonded around the circumferences of the high-pressure interface and the low-pressure side interface.

[0012] (III) Beneficial effects

[0013] The advantage of the utility model compared with the prior art is that the pipeline connected to the high-pressure side interface is connected to the high-pressure interface in the high-pressure side buffer plate, and the fluid is transmitted to the differential pressure transmitter body through the high-pressure interface and the telescopic tube. During the fluid impact process, with the cooperation of the micro damper and the telescopic tube, the high-pressure side buffer plate can buffer the impact force of the fluid, thereby reducing the impact force on the bolt, thereby preventing the bolt from loosening during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a three-dimensional differential pressure transmitter Figure 1 .

[0015] Figure 2 The utility model is a three-dimensional differential pressure transmitter Figure 2 .

[0016] Figure 3 The utility model is a three-dimensional differential pressure transmitter Figure 3 .

[0017] Figure 4 It is an enlarged view of point A of a differential pressure transmitter of the utility model.

[0018] As shown in the figure: 1. Differential pressure transmitter body; 2. Low pressure side interface; 3. High pressure side interface; 4. High pressure side buffer plate; 5. Guide rod; 6. Limit block; 7. High pressure interface; 8. Telescopic tube; 9. Micro damper. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] like Figure 1 , Figure 2 and Figure 3As shown, a differential pressure transmitter comprises a differential pressure transmitter body 1, on which a low-pressure side interface 2 and a high-pressure side interface 3 are provided, and also comprises a high-pressure side buffer plate 4 corresponding to the high-pressure side interface 3, wherein a high-pressure interface 7 arranged oppositely to the high-pressure side interface 3 is provided in the high-pressure side buffer plate 4, and sealing gaskets are adhered around the circumference of the high-pressure interface 7 and the low-pressure side interface 2, and a telescopic tube 8 arranged oppositely to the high-pressure side interface 3 and the high-pressure interface 7 is provided between the differential pressure transmitter body 1 and the high-pressure side buffer plate 4.

[0022] Through the above structure, the pipeline for circulating fluid is connected to the high-pressure interface 7, and the fluid can be input into the differential pressure transmitter body 1. How to achieve buffering of the impact force of the fluid? The specific structure is as follows:

[0023] like Figure 3 and Figure 4 As shown, one end of the telescopic tube 8 is connected to the high-pressure interface 7, and the other end is connected to the high-pressure side interface 3. The differential pressure transmitter body 1 is provided with a micro damper 9 connected to the high-pressure side buffer plate 4 on the high-pressure side interface 3.

[0024] Through the above structure, under the action of the micro damper 9, the impact force on the high-pressure side buffer plate 4 can be buffered.

[0025] Embodiment 2

[0026] like Figure 4 As shown, the differential pressure transmitter body 1 is provided with a guide rod 5 which is relatively arranged and passes through the high-pressure side buffer plate 4 on the high-pressure side interface 3, and the guide rod 5 is provided with a limit block 6 which cooperates with the high-pressure side buffer plate 4 at one end relative to the high-pressure side interface 3, and the limit block 6 and the guide rod 5 are threadedly connected.

[0027] Through the above structure, the guide rod 5 can guide the movement of the high-pressure side buffer plate 4, and the limit block 6 can limit the moving stroke of the high-pressure side buffer plate 4. The threaded connection method facilitates the disassembly and replacement of the limit block 6.

[0028] When the utility model is implemented, before using the differential pressure transmitter body, the fluid pipelines on the high-pressure side and the low-pressure side are connected to the high-pressure interface and the low-pressure side interface respectively with bolts, and the fluid can be introduced to start use. During use, the differential pressure transmitter body will detect the pressure difference;

[0029] During use, the fluid in the high-pressure side pipeline has a fast impact speed and a large impact force, which will generate an impact force on the high-pressure side buffer plate. The high-pressure side buffer plate will move toward the direction of the differential pressure transmitter body under the impact force. The micro damper can buffer the impact force, thereby buffering the high-pressure side buffer plate and playing a buffering role on the impact force. In addition, the guide rod can guide the movement of the high-pressure side buffer plate during the movement of the high-pressure side buffer plate, and the limit block can prevent the high-pressure side buffer plate from moving too far in the direction relative to the differential pressure transmitter body.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0032] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A differential pressure transmitter, comprising a differential pressure transmitter body (1), wherein the differential pressure transmitter body (1) is provided with a low pressure side interface (2) and a high pressure side interface (3), characterized in that: The differential pressure transmitter also includes a high-pressure side buffer plate (4) corresponding to the high-pressure side interface (3), wherein a high-pressure interface (7) arranged oppositely and cooperating with the high-pressure side interface (3) is provided inside the high-pressure side buffer plate (4), and a telescopic tube (8) arranged oppositely and cooperating with the high-pressure side interface (3) and the high-pressure interface (7) is provided between the differential pressure transmitter body (1) and the high-pressure side buffer plate (4), one end of the telescopic tube (8) is connected to the high-pressure interface (7), and the other end is connected to the high-pressure side interface (3), and the differential pressure transmitter body (1) is provided with a micro damper (9) connected to the high-pressure side buffer plate (4) on the high-pressure side interface (3).

2. A differential pressure transmitter according to claim 1, characterized in that: The differential pressure transmitter body (1) is provided with guide rods (5) on the high-pressure side interface (3) which are arranged opposite to each other and penetrate the high-pressure side buffer plate (4).

3. A differential pressure transmitter according to claim 2, characterized in that: The guide rod (5) is provided with a limit block (6) at one end opposite to the high-pressure side interface (3) and matched with the high-pressure side buffer plate (4).

4. A differential pressure transmitter according to claim 3, characterized in that: The limit block (6) and the guide rod (5) are threadedly connected.

5. A differential pressure transmitter according to claim 1, characterized in that: Sealing gaskets are bonded around the circumferences of the high-pressure interface (7) and the low-pressure side interface (2).

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