Test seal fixture for insertion transducer

Abstract

The application discloses a test sealing tool for a plug-in transmitter, which comprises a mounting bracket and a sealing tool arranged in the mounting bracket. The mounting bracket comprises a bottom plate arranged horizontally and a top plate arranged above the bottom plate through a supporting column. The sealing tool comprises a plurality of lower dies arranged at the top end of the bottom plate and an upper die slidingly arranged above the lower dies. The top surface of the lower die is concavely provided with a first cavity, and the bottom surface of the upper die is concavely provided with a second cavity. The first cavity and the second cavity form a test cavity for accommodating the plug-in transmitter and a test connector after the upper die and the lower die are closed. The application has the advantages of simple structure, and the plug-in transmitter and the test connector are both arranged in the test cavity, so that the influence of gas leakage at the connecting position of the plug-in transmitter and the test connector on the test result is reduced.

Description

Technical Field

[0001] This application relates to the field of instrument production and testing, and in particular to a test sealing fixture for an immersion transmitter. Background Technology

[0002] Submersible pressure transmitters are widely used instruments for measuring liquid level and pressure, and their calibration directly affects the measurement accuracy and operational reliability of the equipment. The calibration process typically involves applying a standard pressure to ensure the transmitter's pressure sensor receives a precise pressure signal, followed by measuring and calibrating the output electrical signal to ensure it matches the theoretical value, thus verifying the equipment's accuracy. However, in actual calibration, the test connector is connected to the submersible transmitter via a threaded structure, requiring the use of wrenches or other tools to ensure tightness and airtightness between the transmitter and the test connector. This process is time-consuming and labor-intensive, and manual operation cannot guarantee the tightening effect between the test connector and each submersible transmitter. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a test sealing fixture for an immersion transmitter to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: This application discloses a test sealing fixture for an immersion transmitter, including a mounting bracket and a sealing fixture disposed within the mounting bracket. The mounting bracket includes a horizontally disposed base plate and a top plate disposed directly above the base plate via support columns. The sealing fixture includes a plurality of lower molds disposed at the top of the base plate and an upper mold slidably disposed directly above the lower molds. The top surface of the lower molds is recessed with a first cavity, and the bottom surface of the upper molds is recessed with a second cavity. The first cavity and the second cavity form a test cavity for accommodating the immersion transmitter and the test connector after the upper and lower molds are closed.

[0005] Furthermore, in the aforementioned test sealing fixture for the submersible transmitter, a first sealing element is embedded on the top surface of the lower mold, and a second sealing element is embedded on the bottom surface of the upper mold. The top surface of the first sealing element protrudes from the top surface of the lower mold, and the bottom surface of the second sealing element protrudes from the bottom surface of the upper mold. The first and second sealing elements form a sealing cavity after the upper and lower molds are closed, and the connection between the submersible transmitter and the test connector is located within the sealing cavity.

[0006] Furthermore, in the above-mentioned test sealing fixture for the submersible transmitter, the first sealing element includes a first sealing strip and a second sealing strip spaced apart, and a side sealing strip connected between the two ends of the first sealing strip and the second sealing strip respectively. The first sealing strip and the second sealing strip respectively penetrate the first cavity radially and are respectively provided corresponding to the outer wall of the housing of the submersible transmitter and the outer wall of the pipe of the test connector.

[0007] Furthermore, in the aforementioned test sealing fixture for the submersible transmitter, a reinforcing portion protrudes from the side of the first sealing strip opposite to the upper mold.

[0008] Furthermore, in the aforementioned test sealing fixture for the submersible transmitter, the structure of the second seal is the same as that of the first seal.

[0009] Furthermore, in the aforementioned test sealing fixture for the submersible transmitter, a positioning pin protrudes from the top surface of the lower mold, and a positioning hole corresponding to the positioning pin is recessed on the bottom surface of the upper mold.

[0010] Furthermore, in the aforementioned test sealing fixture for the submersible transmitter, a limiting plate corresponding to the submersible transmitter is provided on one side of the top surface of the base plate.

[0011] Furthermore, in the aforementioned test sealing fixture for the submersible transmitter, a cylinder is provided at the top of the top plate, and the piston rod of the cylinder slides through the top plate and is connected to the top of the upper mold via a connecting block.

[0012] Furthermore, in the aforementioned test sealing fixture for the submersible transmitter, the top end of the connecting block is slidably connected to the top plate via a guide shaft.

[0013] Compared with the prior art, the advantages of this utility model are: the test sealing fixture of the submersible transmitter has a simple structure, and the submersible transmitter and test connector are both located in the test chamber, which reduces the impact of air leakage at the connection between the submersible transmitter and the test connector on the test results. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a structural schematic of the test sealing fixture for an immersion transmitter in a specific embodiment of this utility model.

[0016] Figure 2 The diagram shown is an exploded view of the lower mold and the upper mold in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a structural schematic of the lower mold in a specific embodiment of this utility model.

[0018] Figure 4 The diagram shown is a structural schematic of the first sealing element in a specific embodiment of this utility model.

[0019] Figure 5 The diagram shown is a schematic diagram of the installation of the upper mold in a specific embodiment of this utility model. Detailed Implementation

[0020] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. 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 protection scope of the present utility model.

[0021] In the description 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 this utility model and simplifying the description, and 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] For example, see Figures 1 to 5As shown, a test sealing fixture for an immersion transmitter includes a mounting bracket and a sealing fixture disposed within the mounting bracket. The mounting bracket includes a horizontally disposed base plate 1 and a top plate 3 disposed directly above the base plate 1 via a support column 2. The sealing fixture includes several lower molds 4 disposed at the top of the base plate 1 and an upper mold 5 slidably disposed directly above the lower molds 4. The top surface of the lower mold 4 is recessed with a first cavity 41, and the bottom surface of the upper mold 5 is recessed with a second cavity 51. After the upper mold 5 and the lower mold 4 are closed, the first cavity 41 and the second cavity 51 form a test cavity that accommodates the immersion transmitter 6 and the test connector 7.

[0024] In this technical solution, both the base plate and the top plate are conventional plate structures. The base plate is fixed to the existing workbench with bolts, etc. The support column is a conventional optical shaft structure, and its bottom end is connected to the base plate through a conventional optical shaft support seat. A stud protrudes from its top end, the outer diameter of which is smaller than the diameter of the optical shaft. The stud passes through the top end and is fixed with a conventional nut (not shown). The lower mold is installed on the top surface of the base plate with conventional bolts, etc., and its top end is provided with a first cavity. The upper mold is slidably positioned directly above the lower mold. After the submersible transmitter and test connector are placed into the first cavity, the upper mold slides down and closes with the lower mold. The first cavity and the second cavity form a test cavity to accommodate the submersible transmitter and test connector, reducing the impact of air leakage at the connection between the submersible transmitter and test connector on the test results.

[0025] For example, see Figures 1 to 4 As shown, the top surface of the lower mold 4 is fitted with a first sealing element 8, and the bottom surface of the upper mold 5 is fitted with a second sealing element 9. The top surface of the first sealing element 8 protrudes from the top surface of the lower mold 4, and the bottom surface of the second sealing element 9 protrudes from the bottom surface of the upper mold 5. The first sealing element 8 and the second sealing element 9 form a sealing cavity after the upper mold 5 and the lower mold 4 are closed. The connection between the submersible transmitter 6 and the test connector 7 is located in the sealing cavity.

[0026] In this technical solution, after the upper mold slides down and closes with the lower mold, the first and second seals fit together to form a sealed cavity. The connection between the submersible transmitter and the test connector is located in the sealed cavity. Even if there is air leakage at the connection between the submersible transmitter and the test connector, it will not affect the application of standard pressure to the pressure sensor of the transmitter.

[0027] For example, see Figures 1 to 4 As shown, the first sealing element 8 includes a first sealing strip 81 and a second sealing strip 82 spaced apart, and a side sealing strip 83 connected between the two ends of the first sealing strip 81 and the second sealing strip 82 respectively. The first sealing strip 81 and the second sealing strip 82 respectively penetrate the first cavity 41 radially and are respectively arranged corresponding to the outer wall of the housing of the submersible transmitter 6 and the outer wall of the pipeline of the test connector 7.

[0028] In this technical solution, the first sealing element is made of elastic sealing material such as rubber. The top surface of the lower mold is recessed with a sealing groove for installing the first sealing element. The two side sealing strips are respectively set on the outside of the first cavity. The corresponding parts of the first sealing strip and the second sealing strip are set in the first cavity and protrude from the inner wall of the first cavity. The top surface of the first sealing strip is provided with a first arc-shaped groove that fits the outer wall of the housing of the submersible transmitter. The top surface of the second sealing strip is provided with a second arc-shaped groove that fits the outer wall of the pipe of the test connector. After the upper mold and the lower mold are closed, the connection between the submersible transmitter and the test connector is in the sealed cavity. The test connector can be slidably inserted into the submersible transmitter. The connection does not need to be sealed. The sealing cavity ensures that standard pressure is applied to the sensor inside the submersible transmitter.

[0029] For example, see Figures 1 to 4 As shown, the first sealing strip 81 has a reinforcing part 811 protruding from the side opposite to the upper mold 5.

[0030] In this technical solution, the depth of the sealing groove on the top surface of the lower mold corresponds to the height of the reinforcing part. After the reinforcing part is embedded in the sealing groove, the installation stability of the first sealing element is improved. In addition, the reinforcing part can also strengthen the strength of the first sealing strip.

[0031] For example, see Figure 1 and Figure 5 As shown, the structure of the second seal 9 is the same as that of the first seal 8.

[0032] In this technical solution, the structure of the second cavity is the same as that of the first cavity, the structure of the second seal is the same as that of the second seal, and the first seal and the second seal are interchangeable.

[0033] For example, see Figures 1 to 3 As shown, the top surface of the lower mold 4 has a protruding locating pin (not shown), and the bottom surface of the upper mold 5 has a recessed locating hole (not shown) corresponding to the locating pin.

[0034] In this technical solution, the locating pin is a conventional cylindrical pin, which is vertically set in the lower mold through interference fit and other means. The alignment accuracy between the lower mold and the upper mold is improved by the cooperation of the locating pin and the locating hole.

[0035] For example, see Figure 1 As shown, a limiting plate 10 corresponding to the submersible transmitter 6 is provided on one side of the top surface of the base plate 1.

[0036] In this technical solution, when the submersible transmitter is placed into the first cavity of the lower mold, its end facing away from the test connector can abut against the limiting plate, which facilitates the rapid positioning of the submersible transmitter.

[0037] For example, see Figure 1 and Figure 5As shown, a cylinder 11 is provided at the top of the top plate 3. The piston rod of the cylinder 11 slides through the top plate 3 and is connected to the top of the upper mold 5 through the connecting block 12.

[0038] In this technical solution, the upper mold is fixed to the bottom of the connecting block by conventional bolts, and the piston rod of the cylinder is connected to the top of the connecting block by conventional floating joints, thereby connecting the upper mold to the piston rod of the cylinder. The extension and retraction of the piston rod of the cylinder drives the upper mold to rise and fall, thereby realizing the opening and closing of the mold.

[0039] For example, see Figure 1 and Figure 5 As shown, the top end of the connecting block 12 is slidably connected to the top plate 3 via the guide shaft 13.

[0040] In this technical solution, the connecting block has a connecting strip protruding from its side and is connected to the guide shaft by bolts, etc. The top plate is equipped with linear bearings corresponding to the guide shaft. Through the cooperation of the guide shaft and the linear bearings, the accuracy of the upper mold lifting is improved, that is, the upper mold moves back and forth along the axial direction (vertical direction) of the guide shaft.

[0041] In summary, the test sealing fixture for this submersible transmitter has a simple structure, with both the submersible transmitter and the test connector located inside the test chamber, reducing the impact of air leakage at the connection between the submersible transmitter and the test connector on the test results.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A test sealing fixture for an immersion transmitter, characterized in that, The device includes a mounting bracket and a sealing fixture disposed within the mounting bracket. The mounting bracket includes a horizontally arranged base plate and a top plate disposed directly above the base plate via support columns. The sealing fixture includes a plurality of lower molds disposed at the top of the base plate and an upper mold slidably disposed directly above the lower molds. The top surface of the lower molds is recessed with a first cavity, and the bottom surface of the upper molds is recessed with a second cavity. The first cavity and the second cavity form a test cavity for accommodating a drop-in transmitter and a test connector after the upper and lower molds are closed.

2. The test sealing fixture for the submersible transmitter according to claim 1, characterized in that: The top surface of the lower mold is fitted with a first sealing element, and the bottom surface of the upper mold is fitted with a second sealing element. The top surface of the first sealing element protrudes from the top surface of the lower mold, and the bottom surface of the second sealing element protrudes from the bottom surface of the upper mold. The first sealing element and the second sealing element form a sealing cavity after the upper mold and the lower mold are closed. The connection between the submersible transmitter and the test connector is located in the sealing cavity.

3. The test sealing fixture for the submersible transmitter according to claim 2, characterized in that: The first sealing element includes a first sealing strip and a second sealing strip spaced apart, and a side sealing strip connected between the two ends of the first sealing strip and the second sealing strip respectively. The first sealing strip and the second sealing strip respectively penetrate the first cavity radially and are respectively provided with corresponding outer walls of the housing of the submersible transmitter and outer walls of the pipe of the test connector.

4. The test sealing fixture for the submersible transmitter according to claim 3, characterized in that: The first sealing strip has a reinforcing part protruding from the side opposite to the upper mold.

5. The test sealing fixture for an immersion transmitter according to claim 4, characterized in that: The structure of the second seal is the same as that of the first seal.

6. The test sealing fixture for the submersible transmitter according to claim 1, characterized in that: The lower mold has a locating pin protruding from its top surface, and the upper mold has a locating hole corresponding to the locating pin recessed on its bottom surface.

7. The test sealing fixture for the submersible transmitter according to claim 1, characterized in that: A limiting plate corresponding to the submersible transmitter is provided on one side of the top surface of the base plate.

8. The test sealing fixture for the submersible transmitter according to claim 1, characterized in that: A cylinder is provided at the top of the top plate, and the piston rod of the cylinder slides through the top plate and is connected to the top of the upper mold through a connecting block.

9. The test sealing fixture for an immersion transmitter according to claim 8, characterized in that: The top end of the connecting block is slidably connected to the top plate via a guide shaft.

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