Plate-type joint of diffused silicon differential pressure sensor

Abstract

The utility model provides a plate-type joint for a diffused silicon differential pressure sensor, which comprises a joint main body, a plug and a cable joint, an accommodating cavity for mounting a sensor is formed in the joint main body, and a mounting surface is formed on a certain outer side wall of the joint main body. The mounting surface is a plane, a low-pressure inlet and a high-pressure inlet are formed in the mounting surface, and the low-pressure inlet and the high-pressure inlet both communicate with the containing cavity and are sequentially arranged in the first direction; a first installation opening communicated with the containing cavity is formed in the end, close to the high-pressure inlet, of the connector body in the first direction. The plug is in sealed connection with the connector body through the first installation opening. A second installation opening communicated with the containing cavity is formed in the peripheral side of the connector body, the second installation opening and the installation face are arranged adjacently or oppositely, and the cable connector is connected with the connector body in a sealed mode through the second installation opening. The joint provided by the utility model has the advantages of meeting installation requirements and being convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of detection accessories, in particular to a diffused silicon differential pressure sensor plate joint. Background Art

[0002] For a long time, the joints of differential pressure sensors mostly use double-sided external joints, which makes it impossible to arrange the sensors reasonably during installation and layout, making the installation pipeline of the sensors more complicated and the installation process not effectively guaranteed. Especially for diffused silicon differential pressure sensors, when such sensors are installed to replace traditional mechanical plate sensors, in order to meet the connection requirements, the pipelines need to be rotated multiple times, resulting in irregular installation and uneven layout, which greatly increases the difficulty and workload of pipeline installation. Utility Model Content

[0003] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides a diffused silicon differential pressure sensor plate-type connector, which has the advantages of meeting installation requirements and being easy to install.

[0005] According to the embodiment of the utility model, the diffused silicon differential pressure sensor plate connector provided includes a connector body, a plug and a cable connector, a housing cavity for installing the sensor is formed inside the connector body, a mounting surface is formed on a certain outer side wall of the connector body, the mounting surface is a plane and a low-pressure inlet and a high-pressure inlet are formed on the mounting surface, the low-pressure inlet and the high-pressure inlet are both connected to the housing cavity and are arranged in sequence along the first direction; a first mounting port connected to the housing cavity is formed at one end of the connector body close to the high-pressure inlet in the first direction, and the plug is sealed and connected to the connector body via the first mounting port; a second mounting port connected to the housing cavity is formed on the outer peripheral side of the connector body, the second mounting port and the mounting surface are adjacent to or opposite to each other, and the cable connector is sealed and connected to the connector body via the second mounting port.

[0006] According to the diffused silicon differential pressure sensor plate-type connector of the embodiment of the utility model, the planar mounting surface formed on the outer side wall of the connector body can conveniently realize the fitting plate-type installation of the connector body and the corresponding position of the device to be tested, and the low-pressure inlet and the high-pressure inlet formed on the mounting surface can be directly connected to the relevant connector; the first mounting port formed at one end of the connector body along the first direction and the second mounting port arranged adjacent to or opposite to the mounting surface can ensure that the plug and cable connector installed on the connector body through the above-mentioned structure will not interfere with the plate-type installation of the connector body.

[0007] In some embodiments, the portion of the outer peripheral side wall of the plug inserted into the connector body is recessed radially inward and forms an annular groove communicating with the high-pressure inlet, the middle portion of one end of the plug inserted into the connector body is recessed inward and forms a through hole, the through hole and the annular groove are connected through a connecting hole formed in the plug, and the middle portion and the outer end of the connecting hole are connected to the through hole and the annular groove respectively. According to the diffused silicon differential pressure sensor plate connector of the embodiment of the utility model, the annular groove can connect the positive pressure side of the sensor and the high-pressure inlet to realize the detection of relevant data.

[0008] In some embodiments, the communicating hole is a cross-shaped structure and an outer end of the communicating hole is arranged opposite to the high-pressure inlet.

[0009] In some embodiments, at least one first sealing ring is fixed to the outer wall of the plug in sequence along the axial direction, and the plug is sealed to the joint body through the first sealing ring; and / or, a second sealing ring is fixed to the outer wall of the sensor facing the plug, and the sensor is sealed to the perforation through the second sealing ring. According to the diffused silicon differential pressure sensor plate joint of the embodiment of the utility model, the sealing connection between the plug and the joint body can be achieved through the above-mentioned first sealing rings, and the sealing connection between the sensor and the plug can be achieved through the above-mentioned second sealing ring, so as to avoid the joint affecting the normal detection of the sensor and further ensure the accuracy of the detection result.

[0010] In some embodiments, a small hole is formed at one end of the accommodating cavity away from the plug, and the small hole is communicated with the low-pressure inlet.

[0011] In some embodiments, a third sealing ring is fixed on the outer wall of the sensor, and when the sensor is located in the accommodating cavity, the third sealing ring can separate the accommodating cavity. According to the diffused silicon differential pressure sensor plate connector of the embodiment of the utility model, the third sealing ring can realize a sealed connection between the sensor and the accommodating cavity, ensure that the small hole and the sensor are sealed, and further ensure the accuracy of the detection result.

[0012] In some embodiments, sealing grooves are further provided at the low-pressure inlet and the high-pressure inlet.

[0013] In some embodiments, both the low-pressure inlet and the high-pressure inlet are provided with joint threads.

[0014] According to the diffused silicon differential pressure sensor plate-type connector of the embodiment of the utility model, the sealing groove and connector thread are used to cooperate with the relevant installation interface structure to achieve a tight connection between the diffused silicon differential pressure sensor plate-type connector and the corresponding device to be tested.

[0015] In some embodiments, the cable connector is a Hirschmann connector.

[0016] In some embodiments, a plurality of mounting holes are formed on the mounting surface, and the number of the mounting holes is at least four and is evenly distributed on the upper and lower sides of the low-pressure inlet and the high-pressure inlet. According to the diffused silicon differential pressure sensor plate connector of the embodiment of the utility model, the mounting holes are used to firmly fix the connector on the device to be tested, thereby improving the firmness of the connection between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a front view of a diffused silicon differential pressure sensor plate-type connector according to an embodiment of the utility model;

[0019] Figure 2 It is a side view of the diffused silicon differential pressure sensor plate-type connector of an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 A schematic cross-sectional structure diagram of ;

[0021] Figure 4 It is a schematic cross-sectional structure diagram of another angle of the diffused silicon differential pressure sensor plate joint of an embodiment of the utility model.

[0022] In the figure: 1. connector body; 11. accommodating cavity; 111. small hole; 12. mounting surface; 13. first mounting port; 14. second mounting port; 15. mounting hole; 2. sensor; 21. second sealing ring; 22. third sealing ring; 3. low-pressure inlet; 4. high-pressure inlet; 5. plug; 51. annular groove; 52. perforation; 53. connecting hole; 54. first sealing ring; 6. cable connector; 7. sealing groove. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0024] Combine the following Figure 1-Figure 4 A diffused silicon differential pressure sensor plate connector according to an embodiment of the present invention is described.

[0025] The diffused silicon differential pressure sensor plate connector provided in the embodiment of the utility model comprises a connector body 1, a plug 5 and a cable connector 6. The overall structure is as follows Figure 1 and Figure 2 As shown, a accommodating cavity 11 for installing the sensor 2 is formed inside the connector body 1, and a mounting surface 12 is formed on an outer side wall of the connector body 1. The mounting surface 12 is a plane and is provided with a low-pressure inlet 3 and a high-pressure inlet 4. Both the low-pressure inlet 3 and the high-pressure inlet 4 are connected to the accommodating cavity 11 and are arranged in sequence along a first direction; a first mounting port 13 communicating with the accommodating cavity 11 is formed at one end of the connector body 1 close to the high-pressure inlet 4 in the first direction, and the plug 5 is sealed and connected to the connector body 1 via the first mounting port 13; a second mounting port 14 communicating with the accommodating cavity 11 is formed on the outer peripheral side of the connector body 1, and the second mounting port 14 and the mounting surface 12 are adjacent to or opposite to each other, and the cable connector 6 is sealed and connected to the connector body 1 via the second mounting port 14.

[0026] The planar mounting surface 12 formed on the outer wall of the connector body cooperates with the low-pressure inlet 3 and the high-pressure inlet 4 formed on the mounting surface 12 to conveniently realize the fitting plate-type installation of the connector body and the corresponding position of the device to be tested, so that the low-pressure inlet 3 and the high-pressure inlet 4 can be directly connected to the relevant connector, eliminating the pipe connection and pipe transfer steps, ensuring quick and smooth installation; and the first mounting port 13 formed at one end of the connector body 1 along the first direction and the second mounting port 14 arranged adjacent to or opposite to the mounting surface 12 can ensure that the plug 5 and the cable connector 6 installed on the connector body 1 through the above structure will not interfere with the plate-type installation of the connector body 1.

[0027] It should be noted that the sizes of the low-pressure inlet 3 and the high-pressure inlet 4 and the distance therebetween need to be adjusted according to the sizes of the relevant interfaces on the equipment to be connected or tested to meet the installation requirements.

[0028] Before assembling and installing the diffused silicon differential pressure sensor plate connector, the sensor 2 needs to be placed in the connector body through the first installation port 13, and then the plug 5 and the cable connector 6 need to be installed on the connector body through the first installation port 13 and the second installation port 14.

[0029] Specifically, the plug 5 can be connected to the connector body 1 by threaded connection; similarly, the cable connector 6 can also be connected to the connector body 1 by threaded connection or other methods that can achieve fixed connection.

[0030] In some embodiments, the cable connector 6 may be a Hirschmann connector having an outer wall made of a stainless steel tube, through which the relevant cables on the sensor 2 can be electrically connected to the corresponding circuit board, etc. The structure and connection method of the Hirschmann connector are prior art and will not be described in detail herein.

[0031] Compared with the traditional mechanical plate-type differential pressure switch, the diffused silicon differential pressure sensor plate-type connector can overcome the problem that the traditional mechanical plate-type differential pressure switch cannot be electronicized. At the same time, it also solves the defect that the traditional diffused silicon differential pressure sensor cannot be installed on the plate, providing a better foundation for improving the performance of the differential pressure switch.

[0032] In some embodiments, part of the outer peripheral side wall of the plug 5 inserted into the joint body 1 is radially recessed inward to form an annular groove 51 communicating with the high-pressure inlet 4, and the middle part of one end of the plug 5 inserted into the joint body 1 is recessed inward to form a through hole 52, and the through hole 52 and the annular groove 51 are connected via a connecting hole 53 formed in the plug 5, and the middle part and the outer end of the connecting hole 53 are respectively connected to the through hole 52 and the annular groove 51.

[0033] The structure of the connecting hole 53 is as follows: Figure 3 and Figure 4 As shown, the inner side of the above-mentioned communication hole 53 is connected to the through hole 52, and the outer side is formed on the annular groove 51, that is, the positive pressure side of the sensor 2 is connected to the annular groove 51 through the through hole 52 and the communication hole 53. Since the annular groove 51 is connected to the high-pressure inlet 4, the annular groove 51 can connect the positive pressure side of the sensor 2 and the high-pressure inlet 4 to realize the detection of relevant data.

[0034] It should be noted that due to the limitation of the section angle, Figure 4 The cable connector 6 is not shown, and Figure 3 and Figure 4 There is a difference in the cross-sectional shape of the sensor 2 in FIG.

[0035] Generally speaking, the communication hole 53 needs to be arranged along the radial direction of the plug 5. In some embodiments, the communication hole 53 is a cross-shaped structure, and four interconnected holes are formed between the communication hole 53 and the annular groove 51.

[0036] In some embodiments, Figure 4 As shown, one outer end of the above-mentioned connecting hole 53 is arranged opposite to the high-pressure inlet 4.

[0037] In some embodiments, a small hole 111 is formed at one end of the accommodating cavity 11 away from the plug 5 , and the small hole 111 is communicated with the low-pressure inlet 3 .

[0038] The inner diameter of one outer end of the connecting hole 53 is substantially consistent with the inner diameter of the high-pressure inlet 4 . Similarly, the inner diameter of the small hole 111 is substantially consistent with the inner diameter of the low-pressure inlet 3 .

[0039] The small hole 111 can ensure the accuracy of the detection result as much as possible under the premise of ensuring that the sensor 2 located in the accommodating cavity 11 is connected to the low-pressure inlet 3.

[0040] In order to improve the detection accuracy at the high-pressure inlet 4 , in some embodiments, a sealing structure is provided at the connection between the plug 5 and the first installation port 13 .

[0041] Specifically, at least one first sealing ring 54 is fixed in sequence on the outer wall of the plug 5 along the axial direction, and the plug 5 is sealed and connected to the joint body 1 through the first sealing ring 54 .

[0042] Specifically, when the number of the first sealing ring 54 is one, its structure is as follows: Figure 3 When the number of the first sealing ring 54 is two, its structure is as shown Figure 4 shown. Figure 3 and Figure 4 All of them are schematic diagrams of the internal cross-sectional structure of the diffused silicon differential pressure sensor plate-type joint. This embodiment does not limit the number of the above-mentioned first sealing rings 54 and the specific shape of the above-mentioned accommodating cavity 11.

[0043] It should be noted that when the number of the first sealing rings 54 is two, the two first sealing rings 54 should be located on both sides of the annular groove 51, such as Figure 4 shown.

[0044] In order to further improve the detection accuracy, in some embodiments, a sealing structure is also provided at the connection between the sensor 2 and the plug 5 .

[0045] Specifically, a second sealing ring 21 is fixed on the outer wall of the sensor 2 facing the plug 5 , and the sensor 2 is sealedly connected to the through hole 52 via the second sealing ring 21 , thereby achieving a sealed connection between the sensor 2 and the plug 5 .

[0046] In order to improve the detection accuracy at the low-pressure inlet 3 , in some embodiments, a sealing structure is also formed between one end of the sensor 2 inserted into the accommodating cavity 11 and the accommodating cavity 11 .

[0047] Specifically, a third sealing ring 22 is fixed on the outer wall of the sensor 2. When the sensor 2 is located in the accommodating cavity 11, the third sealing ring 22 can separate the accommodating cavity 11. Figure 3 At this time, the low-pressure side of the sensor 2 can communicate with the low-pressure inlet 3 through the small hole 111 located on the accommodating cavity 11.

[0048] The third sealing ring 22 can realize a sealed connection between the sensor 2 and the accommodating chamber 11, thereby ensuring that the small hole 111 and the sensor 2 are sealed, and further ensuring the accuracy of the detection result.

[0049] When using the diffused silicon differential pressure sensor plate connector, in addition to the connector itself requiring sealing, the connection between the connector and the corresponding equipment also requires sealing.

[0050] In some embodiments, sealing grooves 7 are further provided at the low-pressure inlet 3 and the high-pressure inlet 4 .

[0051] In some embodiments, both the low-pressure inlet 3 and the high-pressure inlet 4 are provided with joint threads.

[0052] The sealing groove 7 and the joint thread are used to cooperate with the relevant installation interface structure to achieve a tight connection between the diffused silicon differential pressure sensor plate-type joint and the corresponding device to be tested.

[0053] In some embodiments, a plurality of mounting holes 15 are formed on the mounting surface 12, and the number of the mounting holes 15 is at least four and is evenly distributed on the upper and lower sides of the low-pressure inlet 3 and the high-pressure inlet 4. According to the diffused silicon differential pressure sensor plate connector of the embodiment of the utility model, the mounting holes 15 are used to firmly fix the connector on the device to be tested, thereby improving the firmness of the connection between the two.

[0054] The mounting hole 15 may be a hole penetrating the joint body 1 or a threaded hole.

[0055] The structure of the diffused silicon differential pressure sensor plate connector is described below in conjunction with specific embodiments.

[0056] In this embodiment, the connector body is a quadrangular prism structure, and a hole is formed in the middle of one end in the length direction, so as to form a circular accommodating cavity 11 for installing the sensor 2 and a first installation opening 13 for installing the plug 5. The first installation opening 13 is provided with a thread, and the plug 5 is sealed and installed on the connector body by means of a threaded connection and a first sealing ring 54. Figure 1 Taking the direction shown as an example, the second installation port 14 is formed on the top surface of the connector body, the cable connector 6 is sealed and connected to the connector body through the second installation port 14, and the lead wires on the sensor 2 are led out from the connector body through the Hirschmann connector and connected to the circuit board located inside or outside the Hirschmann connector. The front of the connector body is the installation surface 12, and the low-pressure inlet 3 and the high-pressure inlet 4 are formed in sequence in the horizontal direction in the middle, and a mounting hole 15 is formed on the upper and lower sides of the low-pressure inlet 3 and the high-pressure inlet 4 respectively (that is, the number of the mounting holes 15 is four). In the connector body, the above-mentioned low-pressure inlet 3 and high-pressure inlet 4 are respectively connected to the accommodating cavity 11 located on both sides of the sensor 2 through different structures to realize its detection function. In order to ensure that the low-pressure inlet 3 and the high-pressure inlet 4 can be tightly connected to the device to be tested, the above-mentioned low-pressure inlet 3 and the high-pressure inlet 4 are respectively formed with a sealing groove 7.

[0057] It can be understood that the diffused silicon differential pressure sensor plate connector provided in this embodiment can solve the problems that traditional diffused silicon differential pressure sensors cannot be installed in plate form, are difficult to install, and have a high installation workload. It can realize the plate installation of the differential pressure sensor on the equipment, making it easy to install and providing a basis for improving the performance of the differential pressure switch.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A diffused silicon differential pressure sensor plate connector, characterized in that: include: A connector body (1), wherein a receiving cavity (11) for installing a sensor (2) is formed inside the connector body (1), a mounting surface (12) is formed on an outer side wall of the connector body (1), the mounting surface (12) is a plane and a low-pressure inlet (3) and a high-pressure inlet (4) are formed on the mounting surface (12), the low-pressure inlet (3) and the high-pressure inlet (4) are both connected to the receiving cavity (11) and are arranged in sequence along a first direction; A plug (5), wherein one end of the joint body (1) close to the high-pressure inlet (4) in the first direction forms a first installation opening (13) communicating with the accommodating cavity (11), and the plug (5) is sealedly connected to the joint body (1) via the first installation opening (13); A cable connector (6), wherein a second mounting opening (14) communicating with the accommodating cavity (11) is formed on the outer peripheral side of the connector body (1), the second mounting opening (14) and the mounting surface (12) are arranged adjacent to or opposite to each other, and the cable connector (6) is sealedly connected to the connector body (1) via the second mounting opening (14).

2. The diffused silicon differential pressure sensor plate joint according to claim 1, characterized in that: The portion of the outer peripheral side wall of the plug (5) inserted into the joint body (1) is recessed radially inward to form an annular groove (51) communicating with the high-pressure inlet (4); the middle portion of one end of the plug (5) inserted into the joint body (1) is recessed inward to form a through hole (52); the through hole (52) and the annular groove (51) are connected via a connecting hole (53) formed in the plug (5); the middle portion and the outer end of the connecting hole (53) are connected to the through hole (52) and the annular groove (51) respectively.

3. The diffused silicon differential pressure sensor plate connector according to claim 2, characterized in that: The communicating hole (53) is a cross-shaped structure, and one outer end of the communicating hole (53) is arranged opposite to the high-pressure inlet (4).

4. The diffused silicon differential pressure sensor plate joint according to claim 2, characterized in that: At least one first sealing ring (54) is fixed in sequence on the outer side wall of the plug (5) along the axial direction, and the plug (5) is sealedly connected to the joint body (1) via the first sealing ring (54); And / or, a second sealing ring (21) is fixed on the outer wall of the sensor (2) on the side facing the plug (5), and the sensor (2) is sealedly connected to the through hole (52) via the second sealing ring (21).

5. The diffused silicon differential pressure sensor plate connector according to claim 1, characterized in that: A small hole (111) is formed at one end of the accommodating cavity (11) away from the plug (5), and the small hole (111) is communicated with the low-pressure inlet (3).

6. The diffused silicon differential pressure sensor plate connector according to claim 5, characterized in that: A third sealing ring (22) is fixed on the outer side wall of the sensor (2); when the sensor (2) is located in the accommodating cavity (11), the third sealing ring (22) can separate the accommodating cavity (11).

7. The diffused silicon differential pressure sensor plate connector according to claim 1, characterized in that: The low-pressure inlet (3) and the high-pressure inlet (4) are also provided with sealing grooves (7).

8. The diffused silicon differential pressure sensor plate connector according to claim 1, characterized in that: The low-pressure inlet (3) and the high-pressure inlet (4) are both provided with joint threads.

9. The diffused silicon differential pressure sensor plate connector according to claim 1, characterized in that: The cable connector (6) is a Hirschmann connector.

10. The diffused silicon differential pressure sensor plate connector according to claim 1, characterized in that: A plurality of mounting holes (15) are also formed on the mounting surface (12), and the number of the mounting holes (15) is at least four and is evenly distributed on the upper and lower sides of the low-pressure inlet (3) and the high-pressure inlet (4).

Images