A pressure sensor transition joint and hydraulic system that can be plugged in under pressure

Abstract

This utility model discloses a pressure sensor transition connector and hydraulic system that can be plugged in and removed under pressure. It includes a male connector and a female connector. The male connector includes a connector body I, a pressure cap, and a unidirectional conductive component with a reset function. The female connector includes a connector body II and a nut. The nut is connected to the connector body I on the same side as the pressure cap, forming a helical pair. The pressure sensor is mounted on the connector body II. By rotating the nut, the connector body II moves axially, and its pointed end pushes the unidirectional conductive component to a conductive state, thereby connecting the pressure sensor and the pressure measuring point. This utility model enables the pressure sensor to be replaced under pressure, improving the convenience of pressure sensor replacement, reducing workload, and increasing work efficiency.

Description

Technical Field

[0001] This utility model relates to a pressure sensor transition connector that can be plugged in and unplugged under pressure, belonging to the technical field of pressure sensor transition connectors. Background Technology

[0002] With the continuous development of automation technology, the types of sensors are becoming more and more abundant, and their usage frequency is also increasing. Among them, pressure sensors are a commonly used type of sensor in hydraulic systems. By monitoring the pressure status of the system through pressure sensors, the efficiency of fault detection can be improved. However, because the hydraulic oil in the hydraulic system has a very high pressure, directly replacing the sensor will pose a great safety risk. Therefore, pressure sensor replacement usually requires shutting down the equipment and waiting for the pressure to return to zero before replacement. In some situations where it is inconvenient to shut down the equipment, the sensor cannot be replaced normally. Therefore, it is necessary to develop a solution that allows pressure sensors to be replaced directly without shutting down the equipment. Summary of the Invention

[0003] This utility model provides a pressure sensor transition connector that can be plugged in and out under pressure. The purpose of this solution is to enable the pressure sensor to be replaced under pressure, thereby improving the convenience of pressure sensor replacement, reducing workload, and improving work efficiency.

[0004] This utility model is achieved according to the following technical solution:

[0005] In a first aspect, this utility model provides a pressure sensor transition connector that can be plugged in and out under pressure, comprising:

[0006] A male connector includes a connector body I, a pressure cap, and a unidirectional guiding component with a reset function. The connector body I has an axial stepped hole I, and one axial end of the connector body I is used to connect to a pressure measuring point. The pressure cap is installed in the axial stepped hole I at the other axial end of the connector body I, and the pressure cap has an axial stepped hole II coaxial with the axial stepped hole I. The unidirectional guiding component is arranged in the axial stepped hole I and the axial stepped hole II. The unidirectional guiding component is configured such that it can only conduct through the axial stepped hole I and the axial stepped hole II when a pushing force is applied to the unidirectional guiding component from the axial stepped hole II to overcome the elastic force of the unidirectional guiding component.

[0007] The female connector includes a connector body II and a nut. The nut is connected to the connector body I on the same side as the pressure cap, forming a helical pair. The nut encloses the pressure cap. One axial end of the connector body II is used to install a pressure sensor, and the other axial end of the connector body II is a pointed end, which passes through the nut and the axial stepped hole II in sequence. The connector body II is provided with an axial stepped hole III coaxial with the axial stepped hole II. By rotating the nut, the connector body II is moved axially, and its pointed end pushes the unidirectional conduction component to the conduction state, thereby connecting the pressure sensor and the pressure measuring point.

[0008] In some embodiments, the unidirectional guiding component includes a spring and a ball. The ball can abut against the step of the axial stepped hole II. One end of the spring abuts against the step of the axial stepped hole I, and the other end of the spring abuts against the ball. Under the thrust provided by the spring force or the thrust provided by the spring force and hydraulic oil pressure, the ball makes close contact with the pressure cap, forming a linear seal through the linear contact between the ball and the pressure cap.

[0009] In some embodiments, the connector body I is provided with an external thread at the part connected to the pressure measuring point, and the pressure measuring point is provided with an internal thread. The connector body I is fixed to the pressure measuring point by the cooperation of the internal and external threads.

[0010] In some embodiments, at least one sealing ring is provided at the junction of the connector body I and the pressure measuring point to seal the gap between them; and / or,

[0011] The joint body I and the nut are provided with at least one sealing ring to seal the gap between them.

[0012] In some embodiments, the front half of the pressure cap is inserted into the axial stepped hole I of the connector body I in an interference fit manner, and the pressure cap inserted into the axial stepped hole I is axially positioned by the boss located outside the connector body I and / or the step inside the axial stepped hole I.

[0013] In some embodiments, the connector body II and the nut are connected together by a snap-fit ​​component, which is configured such that the connector body II can only rotate circumferentially on the nut and cannot move axially.

[0014] In some embodiments, at least one opposing annular groove is provided on the circumferential surfaces of the connector body II and the nut, and a snap ring serving as the snap-fit ​​component is embedded in the two opposing annular grooves, the snap ring only limiting the axial movement of the connector body II.

[0015] In some embodiments, the connector body II has an internal thread at the part where it connects to the pressure sensor, and the pressure sensor has an external thread. The pressure sensor is fixed to the connector body II by the cooperation of the internal and external threads.

[0016] In some embodiments, the outer circumferential surface of the nut is provided as an anti-slip surface formed by grooves or protrusions, or the outer contour of the nut is provided as a hexagonal structure; and / or,

[0017] The connector body II has an anti-slip surface formed by grooves or protrusions on its outer circumferential surface located outside the nut; or, the connector body II has a hexagonal structure on its outer contour located outside the nut; and / or,

[0018] The outer circumferential surface of the central region of the connector body I is provided as an anti-slip surface formed by grooves or protrusions, or the outer contour of the central region of the connector body I is provided as a hexagonal structure.

[0019] Secondly, this utility model provides a hydraulic system including the aforementioned pressure sensor transition joint that can be plugged in and out under pressure.

[0020] The beneficial effects of this utility model are:

[0021] 1. The transition joint allows for the easy disassembly and removal of the pressure sensor, improving work efficiency and reducing waiting time.

[0022] 2. The male and female connectors of the transition joint are connected by threads, which is simple to process and the connection is reliable and will not fall off.

[0023] 3. The steel ball and the pressure cap inside the male connector are in line contact. The higher the hydraulic oil pressure, the tighter the contact between the steel ball and the pressure cap, which can achieve excellent sealing performance. Attached Figure Description

[0024] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0025] In the attached diagram:

[0026] Figure 1 This is a schematic diagram of the male connector of this utility model;

[0027] Figure 2 This is a schematic diagram of the female connector of this utility model;

[0028] Figure 3 This is a schematic diagram of a pressure sensor transition connector that can be plugged in and unplugged under pressure, according to the present invention.

[0029] Attached diagram labels: 1. Pressure cap, 2. Left connector body, 3. Sealing ring, 4. Sealing ring, 5. Right connector body, 6. Steel ball, 7. Spring, 8. Ejector pin, 9. Snap ring, 10. Connector body, 11. Nut, 100-Male connector, 200-Female connector.

[0030] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0033] 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] This utility model provides a pressure sensor transition connector that can be plugged in and unplugged under pressure, so that the pressure sensor can be connected to the location where pressure needs to be measured through the transition connector. The transition connector is divided into two parts and has a self-sealing function. When the pressure sensor needs to be replaced, the transition connector can be unscrewed to remove the sensor together, thereby realizing the function of replacing the sensor without depressurizing.

[0035] like Figure 3 As shown, the transition joint is divided into two parts, namely male connector 100 and female connector 200. The following is a further operational description of this utility model with reference to the accompanying drawings.

[0036] Figure 1 The diagram shows the structure of the male connector. The male connector includes a connector body (divided into a left connector body 2 and a right connector body 5), a pressure cap 1, and a unidirectional conductive component with a reset function (including a spring 7 and a steel ball 6). The connector body is provided with an axial stepped hole I, and the pressure cap 1 is provided with an axial stepped hole II coaxial with the axial stepped hole I. The pressure cap 1 is installed at the center of the left connector body 2. The pressure cap 1 and the left connector body 2 are interference fit to ensure a reliable connection between the pressure cap 1 and the left connector body 2 and to prevent the pressure cap 1 from falling off the left connector body 2. The pressure cap 1 restricts the steel ball 6 and the spring 7 inside the male connector. In the absence of external force, the steel ball 6 contacts the pressure cap 1 under the spring force of the spring 7.

[0037] The outer ring of the right connector body 5 has an external thread. The male connector is installed to the pressure testing point where pressure needs to be measured through the external thread on the right connector body 5. The sealing ring 4 seals the joint between the right connector body 5 and the pressure testing point to prevent hydraulic oil from leaking from the root of the right connector body 5. When the hydraulic oil pressure at the testing point rises, the hydraulic oil and the spring 7 simultaneously exert a thrust on the steel ball 6, causing the steel ball 6 and the pressure cap 1 to come into close contact. A linear seal is formed through the linear contact between the steel ball 6 and the pressure cap 1, ensuring the sealing performance between the steel ball 6 and the pressure cap 1. The higher the hydraulic oil pressure, the tighter the contact between the steel ball 6 and the pressure cap 1, and the better the sealing effect between the steel ball 6 and the pressure cap 1.

[0038] Figure 2 The diagram shows the structure of the male connector. The female connector includes a connector body 10 and a nut 11. The connector body 10 has an axial stepped hole III that is coaxial with the axial stepped hole II. The nut 11 is fixed to the connector body 10 by a snap ring 9. The connector body 10 can only rotate circumferentially and cannot move axially. On the left side of the connector body 10 is a needle-shaped protruding pin 8, which passes through the axial stepped hole II. The connector body 10 has an internal thread, and the pressure sensor can be installed on the connector body 10 through the internal thread.

[0039] like Figure 3 As shown, the outer ring of the left connector body 2 has an external thread, and the nut 11 has an internal thread. The nut 11 can be installed on the left connector body 2 through the internal and external threads. During the installation of the left connector body 2, as the mating length between the nut 11 and the left connector body 2 increases, the ejector pin 8 gradually contacts the steel ball 6 through the center hole of the pressure cap 1. The ejector pin 8 overcomes the spring force on the right side of the steel ball 6 and the thrust of the hydraulic oil, causing the steel ball 6 and the pressure cap 1 to gradually separate. When the steel ball 6 and the pressure cap 1 are completely separated, the hydraulic oil flows through the gap between the steel ball 6 and the pressure cap 1 to the center hole of the ejector pin 8 and then to the connector body 10. The pressure sensor is installed on the connector body 10. Thus, the hydraulic oil can smoothly reach the sensor from the pressure measuring point to realize the pressure measuring function.

[0040] The sealing ring 3 can seal the gap between the nut 11 and the left connector body 2, preventing hydraulic oil from leaking from the gap between the nut 11 and the left connector body 2 during the pressure test.

[0041] like Figure 3 As shown, when the pressure sensor needs to be removed, the female connector 200 is removed from the male connector 100 by loosening the nut 11. As the nut 11 is continuously turned, the ejector pin 8 and the steel ball 6 gradually separate. During the process of the ejector pin 8 and the steel ball 6 gradually separating, the steel ball 6 comes into contact with the pressure cap 1 under the thrust of the hydraulic oil and the spring 7, restoring the sealing performance between the steel ball 6 and the pressure cap 1, thereby realizing the function of removing the sensor under pressure.

[0042] Further options, such as Figure 2As shown, the outer circumferential surface of the nut 11 is provided as an anti-slip surface formed by grooves or protrusions, or the outer contour of the nut 11 is provided as a hexagonal structure; the arrangement of anti-slip surface or hexagonal structure facilitates the rotation of the nut 11.

[0043] Further options, such as Figure 2 As shown, the outer circumferential surface of the connector body 10 located outside the nut 11 is provided with an anti-slip surface formed by a groove or a protrusion, or the outer contour of the connector body 10 located outside the nut 11 is provided with a hexagonal structure; by arranging the anti-slip surface or the hexagonal structure, it is convenient to rotate the connector body 10.

[0044] Further options, such as Figure 1 As shown, the outer circumferential surface of the area between the left connector body 2 and the right connector body 5 is set as an anti-slip surface formed by grooves or protrusions, or the outer contour of the area between the left connector body 2 and the right connector body 5 is set as a hexagonal structure; by arranging the anti-slip surface or the hexagonal structure, it is convenient to rotate the connector body.

[0045] In summary, this utility model provides a pressure sensor transition connector that can be plugged in and out under pressure, achieving the following functions and effects:

[0046] 1. The transition joint allows for the easy disassembly and removal of the pressure sensor, improving work efficiency and reducing waiting time.

[0047] 2. The male and female connectors of the transition joint are threaded, which simplifies the manufacturing process and ensures a reliable connection that will not come loose.

[0048] 3. The steel ball and the pressure cap inside the male connector are in line contact. The higher the hydraulic oil pressure, the tighter the contact between the steel ball and the pressure cap, which can achieve excellent sealing performance.

[0049] The hydraulic system provided by this utility model is described below. The hydraulic system described below can be referred to in correspondence with the pressure sensor transition joint that can be plugged and unplugged under pressure described above.

[0050] The present invention provides a hydraulic system that may include a pressure sensor transition joint that can be plugged in and out under pressure, as described in any of the above embodiments.

[0051] The beneficial effects achieved by the hydraulic system provided by this utility model are consistent with the beneficial effects achieved by the pressure sensor transition joint that can be plugged and unplugged under pressure provided by this utility model, so they will not be repeated here.

[0052] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0053] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0054] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pressure sensor transition connector that can be plugged in and out under pressure, characterized in that, include: A male connector includes a connector body I, a pressure cap, and a unidirectional guiding component with a reset function. The connector body I has an axial stepped hole I, and one axial end of the connector body I is used to connect to a pressure measuring point. The pressure cap is installed in the axial stepped hole I at the other axial end of the connector body I, and the pressure cap has an axial stepped hole II coaxial with the axial stepped hole I. The unidirectional guiding component is arranged in the axial stepped hole I and the axial stepped hole II. The unidirectional guiding component is configured such that it can only conduct through the axial stepped hole I and the axial stepped hole II when a pushing force is applied to the unidirectional guiding component from the axial stepped hole II to overcome the elastic force of the unidirectional guiding component. The female connector includes a connector body II and a nut. The nut is connected to the connector body I on the same side as the pressure cap, forming a helical pair. The nut encloses the pressure cap. One axial end of the connector body II is used to install a pressure sensor, and the other axial end of the connector body II is a pointed end, which passes through the nut and the axial stepped hole II in sequence. The connector body II is provided with an axial stepped hole III coaxial with the axial stepped hole II. By rotating the nut, the connector body II is moved axially, and its pointed end pushes the unidirectional conduction component to the conduction state, thereby connecting the pressure sensor and the pressure measuring point.

2. The pressure sensor transition connector that can be plugged in and unplugged under pressure according to claim 1, characterized in that: The unidirectional guiding component includes a spring and a ball. The ball can abut against the step of the axial stepped hole II. One end of the spring abuts against the step of the axial stepped hole I, and the other end of the spring abuts against the ball. Under the thrust provided by the spring force or the thrust provided by the spring force and the hydraulic oil pressure, the ball makes close contact with the pressure cap, and a linear seal is formed through the linear contact between the ball and the pressure cap.

3. The pressure sensor transition connector that can be plugged in and unplugged under pressure according to claim 1, characterized in that: The connector body I has an external thread at the part that connects to the pressure measuring point, and the pressure measuring point has an internal thread. The connector body I is fixed to the pressure measuring point by the cooperation of the internal and external threads.

4. A pressure sensor transition connector that can be plugged in and unplugged under pressure according to claim 1, characterized in that: The joint body I is provided with at least one sealing ring at the junction with the pressure measuring point to seal the gap between them; and / or, The joint body I and the nut are provided with at least one sealing ring to seal the gap between them.

5. A pressure sensor transition connector that can be plugged in and unplugged under pressure according to claim 1, characterized in that: The front half of the pressure cap is inserted into the axial stepped hole I of the connector body I with an interference fit. The pressure cap is axially positioned by the boss located outside the connector body I and / or the step inside the axial stepped hole I.

6. A pressure sensor transition connector that can be plugged in and unplugged under pressure according to claim 1, characterized in that: The connector body II and the nut are connected together by a snap-fit ​​component, which is configured such that the connector body II can only rotate circumferentially on the nut and cannot move axially.

7. A pressure sensor transition connector capable of being plugged in and unplugged under pressure according to claim 6, characterized in that: The connector body II and the nut each have at least one opposing annular groove on their facing circumferential surfaces. A snap ring, which serves as the snap-fit ​​component, is embedded in the two opposing annular grooves. The snap ring only restricts the axial movement of the connector body II.

8. A pressure sensor transition connector that can be plugged in and unplugged under pressure according to claim 1, characterized in that: The connector body II has an internal thread at the part where it connects to the pressure sensor, and the pressure sensor has an external thread. The pressure sensor is fixed to the connector body II by the cooperation of the internal and external threads.

9. A pressure sensor transition connector capable of being plugged in and unplugged under pressure according to claim 1, characterized in that: The outer circumferential surface of the nut is provided as an anti-slip surface formed by grooves or protrusions, or the outer contour of the nut is provided as a hexagonal structure; and / or, The connector body II has an anti-slip surface formed by grooves or protrusions on its outer circumferential surface located outside the nut; or, the connector body II has a hexagonal structure on its outer contour located outside the nut; and / or, The outer circumferential surface of the central region of the connector body I is provided as an anti-slip surface formed by grooves or protrusions, or the outer contour of the central region of the connector body I is provided as a hexagonal structure.

10. A hydraulic system, characterized in that: Includes the pressure sensor transition connector that can be plugged in and removed under pressure as described in any one of 1 to 9.

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