CN-224231152-U - Pressure sensor core body with joint

Abstract

The application relates to the technical field of pressure sensors, in particular to a pressure sensor core with a joint, which comprises a sensitive material layer, a fusion material layer and a connector which are sequentially connected in a stacked mode, wherein a pressure measurement circuit is etched on one surface of the sensitive material layer, which is opposite to the fusion material layer, the pressure measurement circuit is connected with a core lead wire, an inner cavity is formed in the connector along the axial direction of the inner cavity, one end of the inner cavity, which is opposite to the fusion material layer, of the connector is communicated, a first thread, a hexagonal nut and a connecting thread are sequentially arranged along the direction, opposite to the fusion material layer, of the outer wall of the connector in the circumferential direction, the connector is connected with the inner wall of a shell of the pressure sensor through the first thread and the connecting end of a device to be detected through the connecting thread, and the sensitive material layer, the fusion material layer and the connector are connected in a stacked mode, and the first thread is connected with the shell through the first thread and the connecting end of the device to form a double mechanical sealing barrier.

Inventors

• GU RONGXIANG
• ZHANG LIN
• SHI YANG

Assignees

• 西安中星测控有限公司

Dates

Publication Date

20260512

Application Date

20250618

Claims (6)

1. 1. The utility model provides a from pressure sensor core who takes joint, its characterized in that, including sensitive material layer, the fusion material layer and the connector of range upon range of connection in proper order, sensitive material layer is dorsad the one side sculpture on fusion material layer has pressure measurement circuit, pressure measurement circuit is connected with the core lead wire, the inner chamber has been seted up along its axial in the connector, the inner chamber with the connector is dorsad the one end on fusion material layer link up, follows dorsad the direction on fusion material layer just is in the circumference of connector outer wall has set gradually first screw thread, hexagon nut and connecting screw thread, the connector passes through first screw thread and pressure sensor shells inner wall connection and through connecting screw thread is connected with the equipment link that awaits measuring.
2. 2. The pressure sensor core body with the joint according to claim 1, wherein the connecting body comprises a first connecting body, the connecting threads comprise second threads, one end of the first connecting body is connected with the fusion material layer, the first threads, the hexagonal nuts and the second threads are sequentially arranged along the direction opposite to the fusion material layer and in the circumferential direction of the outer wall of the first connecting body, the second threads are matched with the reserved threads of the connecting end of the equipment to be tested, and the inner cavity of the first connecting body, the first threads, the hexagonal nuts and the second threads are integrally formed.
3. 3. The pressure sensor core with the joint according to claim 1, wherein the connector comprises a second connector body and an extending connector, the connecting screw thread comprises a third screw thread, one end of the second connector body is connected with the fusion material layer, a first screw thread and a hexagonal nut are sequentially arranged along the circumferential direction of the outer wall of the second connector body and the direction opposite to the fusion material layer, the other end of the second connector body is welded with one end of the extending connector, the welding point is located at one end, far away from the first screw thread, of the hexagonal nut, the circumferential direction of the outer wall of the other end of the extending connector is provided with the third screw thread, the third screw thread is matched with the reserved screw thread of the connecting end of the device to be tested, and the inner cavity of the second connector body, the first screw thread and the hexagonal nut are integrally formed.
4. 4. A pressure sensor core with a joint according to claim 2 or 3, characterized in that the sensitive material layer, the fusion material layer and the connecting body are joined by joining in a joining machine, whereby a sequential lamination connection is achieved.
5. 5. The self-contained pressure sensor core of claim 1, wherein the sensitive material layer is a copper foil, the pressure measurement circuit is a wheatstone bridge, the fusion material layer is a glue layer with insulating properties and a connecting function, and the connecting body is a stainless steel plate.
6. 6. A self-contained pressure sensor core according to claim 3, characterized in that the distance between the first thread and the layer of sensitive material is in the range of 3-20mm and the distance between the hexagonal nut and the layer of sensitive material is in the range of 10-50mm.

Description

Pressure sensor core body with joint Technical Field The application relates to the technical field of pressure sensors, in particular to a pressure sensor core body with a joint. Background The pressure sensor core is a sensitive element for sensing pressure of the pressure sensor, and is connected with a pressure pipeline to be measured when the pressure is measured. In the prior art, a pressure sensor core body is assembled on a connector through a sealing ring or welding, the connector is provided with a threaded structure, and the connector connected with the pressure sensor core body is assembled with a pressure pipeline to be tested through the threaded structure on the connector, so that the connection between the pressure sensor core body and the equipment to be tested is realized. However, as a trace amount of leakage may occur in use of the sealing ring, the core and the joint are assembled and connected through the sealing ring, and the sealing ring is only suitable for occasions insensitive to leakage of fluid to be measured. When the assembly connection of the core body and the joint is realized in a welding mode, although laser welding is selected to avoid the influence of temperature on the core body and the width of a welding seam is greatly reduced, welding stress still exists, and the slow release process of the welding stress has adverse effects on the performance of the core body. Disclosure of utility model In view of the above problems, the present application provides a pressure sensor core with a joint, in which a sensitive material layer, a fusion material layer and a connector are connected in a stacked manner, and a first thread is used to connect with a housing, and a connecting thread is used to connect with a device end, so as to form a dual mechanical seal barrier. In order to achieve the purpose of the application, the application provides the following technical scheme: The application provides a pressure sensor core with a joint, which comprises a sensitive material layer, a fusion material layer and a connector which are sequentially connected in a stacked mode, wherein a pressure measurement circuit is etched on one surface of the sensitive material layer, which is opposite to the fusion material layer, the pressure measurement circuit is connected with a core lead, an inner cavity is formed in the connector along the axial direction of the inner cavity, one end of the inner cavity, which is opposite to the fusion material layer, of the connector is communicated, a first thread, a hexagonal nut and a connecting thread are sequentially arranged along the direction opposite to the fusion material layer and in the circumferential direction of the outer wall of the connector, and the connector is connected with the inner wall of a pressure sensor shell through the first thread and is connected with a connecting end of equipment to be tested through the connecting thread. In one possible implementation manner, the connector includes a first connector body, the connecting thread includes a second thread, one end of the first connector body is connected with the fusion material layer, and the first thread, the hexagonal nut and the second thread are sequentially arranged along the circumferential direction of the outer wall of the first connector body along the direction opposite to the fusion material layer, and the second thread is matched with the reserved thread of the connecting end of the device to be tested. In a possible implementation manner, the connector includes a second connector body and an extension connector, the connecting thread includes a third thread, second connector body one end with the material layer is connected to fuse, follows dorsad the direction of material layer just the circumference of second connector body outer wall has set gradually first screw thread and hex nut, the second connector body other end with extension connector one end welding, and the welding point is located hex nut keeps away from the one end of first screw thread, extension connector other end outer wall circumference is provided with the third thread, the third thread with the screw thread that awaits measuring equipment link was reserved matches. In one possible implementation manner, the sensitive material layer, the fusion material layer and the connector are combined and pressed in a combined press to realize sequential lamination connection, the inner cavity of the first connector, the first thread, the hexagonal nut and the second nut are integrally formed, and the inner cavity of the second connector, the first nut and the hexagonal nut are integrally formed. In one possible implementation, the sensitive material layer is a copper foil, the pressure measurement circuit is a wheatstone bridge, the fusion material layer is a glue layer with insulating property and connection function, and the connector is a stainless steel plate. In one possible implementation, the dista