Pressure transmitter

Abstract

The utility model relates to a pressure transmitter, and relates to the technical field of pressure detection equipment. The pressure transmitter comprises a pressure sensing assembly, a cable assembly and a remote end assembly. The pressure sensing assembly comprises a sensor, and the sensor is used for sensing the pressure of a point to be measured and generating a corresponding sensing electric signal; one end of the cable assembly is detachably arranged on the pressure sensing assembly, and the cable assembly is electrically connected with the sensor; and the remote end assembly is detachably arranged at one end, far away from the pressure sensing assembly, of the cable assembly, is electrically connected with the cable assembly, and is used for receiving the sensing electric signal and displaying the corresponding pressure. According to the technical scheme, on the premise that the model of the pressure transmitter is not changed, the measurement performance of the pressure transmitter is not affected, and the number of pressure sensors and electronic bins is not additionally increased, remote display and operation over hundreds of meters can be achieved, and interference of the field electromagnetic environment is avoided.

Description

Technical Field

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

[0002] At present, the pressure measurement of liquid or gaseous media is achieved through pressure detection equipment. As industrial process control places higher and higher requirements on the automation of detection equipment, more and more pressure transmitters are used to measure the pressure of liquid or gaseous media.

[0003] Pressure transmitters, as an essential component of field instrumentation in process industries such as petrochemicals, chemical processing, and pharmaceuticals, are also widely used in field equipment. The pressure measurement points at production sites are installed in different locations depending on the production equipment and processes. However, because production sites are high-risk work environments, on-site maintenance personnel have a clear and limited activity area. As a result, the instrument measurement location is far away from the personnel activity area, making it inconvenient for on-site personnel to view measurement data and perform operations. Existing technical means already exist to address this issue, such as extending the capillary length of flange-type pressure transmitters or using wireless pressure transmitters. However, when the capillary length of a flange-type pressure transmitter exceeds 15 meters, its temperature influence and hysteresis will seriously affect the instrument's performance. Wireless pressure transmitters are also relatively sensitive to on-site electromagnetic interference, and this sensitivity increases with distance. Utility Model Content

[0004] An embodiment of the present application provides a pressure transmitter that can achieve remote display and operation of more than 100 meters without changing the model of the pressure transmitter or affecting the measurement performance of the pressure transmitter, without increasing the number of pressure sensors and electronic compartments, and is not affected by the on-site electromagnetic environment.

[0005] In a first aspect, an embodiment of the present application provides a pressure transmitter, comprising:

[0006] A pressure sensing assembly is provided at a point to be measured, the pressure sensing assembly comprising a sensor for sensing the pressure at the point to be measured and generating a corresponding sensing electrical signal;

[0007] a cable assembly, one end of which is detachably mounted on the pressure sensing assembly, and the cable assembly is electrically connected to the sensor; and

[0008] The remote end component is detachably arranged at one end of the cable assembly away from the pressure sensing component. The remote end component is electrically connected to the cable assembly and is used to receive the sensing electrical signal and display the corresponding pressure.

[0009] In one embodiment, the pressure sensing assembly further includes a first signal processing module disposed in the sensor, and the first signal processing module is electrically connected to the sensor and the cable assembly respectively.

[0010] In one embodiment, the remote end component includes:

[0011] an electronic compartment detachably connected to the cable assembly; and

[0012] The second signal processing module is disposed in the electronic compartment, and the second signal processing module is electrically connected to the electronic compartment and the cable assembly respectively.

[0013] In one embodiment, the sensor comprises:

[0014] Sensor body;

[0015] A fixing seat is provided on the sensor body, wherein an end of the fixing seat away from the sensor body is provided with an opening;

[0016] a mounting seat, threadedly connected to an outer wall of the fixing seat, wherein an end of the mounting seat away from the sensor body is provided with a mounting hole communicating with the opening; and

[0017] a sealing seat, which is inserted into the mounting hole, and a sealing step surface is provided at one end of the sealing seat close to the sensor body, wherein the sealing step surface abuts against the end surface of the fixing seat, and a first sealing hole is provided at one end of the sealing seat away from the sensor body, and the sealing seat, the mounting seat and the fixing seat jointly form a first cavity;

[0018] Wherein, the first signal processing module is arranged in the first cavity.

[0019] In one embodiment, the electronic warehouse includes:

[0020] The electronic chamber body includes a display screen for displaying pressure parameters;

[0021] a first adapter, threadedly connected to the electronic compartment body, wherein the first adapter and the electronic compartment body together form a second cavity; and

[0022] A second adapter seat is threadedly connected to an end of the first adapter seat away from the electronic compartment body, and a second sealing hole is provided at the end of the second adapter seat away from the first adapter seat;

[0023] Wherein, the second signal processing module is disposed in the second cavity.

[0024] In one embodiment, the cable assembly comprises:

[0025] Cables;

[0026] a sleeve, disposed on an outer wall of the cable; and

[0027] Two welding rings are respectively arranged at two ends of the sleeve, one of the two welding rings is located in the first sealing hole, and the other welding ring is located in the second sealing hole.

[0028] In one embodiment, the pressure transmitter further comprises:

[0029] a first sealing member disposed in the first sealing hole, the first sealing member abutting against an end surface of one of the two welding rings close to the sensor body; and

[0030] a first locking nut threadedly connected to the first sealing hole, the first locking nut abutting against an end surface of one of the two welding rings away from the first sealing member;

[0031] One end of the cable is sequentially passed through the first locking nut and the first seal, and is electrically connected to the first signal processing module.

[0032] In one embodiment, the pressure transmitter further comprises:

[0033] a second sealing member disposed in the second sealing hole, the second sealing member abutting against an end of the other welding ring of the two welding rings close to the electronic compartment body; and

[0034] a second locking nut threadedly connected to the second sealing hole, the second locking nut abutting against an end surface of the other welding ring away from the second sealing member;

[0035] One end of the cable is sequentially passed through the second locking nut and the second sealing member, and is electrically connected to the second signal processing module.

[0036] In one embodiment, the inner diameter of the first sealing hole gradually decreases along the axis toward the sensor body, and the inner diameter of the second sealing hole gradually decreases along the axis toward the electronic chamber body.

[0037] In one embodiment, the pressure transmitter further comprises:

[0038] A third sealing member is provided between the sealing seat and the fixing seat; and

[0039] The fourth sealing member is arranged between the first adapter and the electronic compartment body.

[0040] Compared with the prior art, the advantage of the embodiments of the present application is that by setting a cable assembly to remotely connect the pressure sensing assembly and the remote end assembly, the sensing electrical signal detected by the pressure sensing assembly is transmitted to the remote end assembly, and the corresponding pressure parameters are displayed through the remote end assembly, so that the staff can view the pressure and operate the transmitter on the remote end assembly within a safe area; compared with the pressure transmitter that realizes remote display operation in the prior art, the present invention does not need to change the model of the pressure transmitter, nor does it affect the measurement performance of the pressure transmitter. Without increasing the number of pressure sensors and electronic compartments, it can realize remote display and operation of more than 100 meters, and is not affected by the on-site electromagnetic environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0042] Figure 1 This is a structural diagram of a pressure transmitter provided by an embodiment of the present utility model;

[0043] Figure 2 yes Figure 1 A schematic structural diagram of a pressure sensing assembly provided in the embodiment;

[0044] Figure 3 yes Figure 1 A schematic diagram of the structure of the remote end component provided in the embodiment.

[0045] Reference numerals:

[0046] 10. Pressure sensing assembly; 110. Sensor; 1101. Sensor body; 1102. Fixing seat; 1103. Mounting seat; 1104. Sealing seat; 1105. Sealing step surface; 1107. First cavity; 1109. Welding block; 1110. Cable sealing head; 120. First signal processing module;

[0047] 20. Cable assembly; 210. Cable; 220. Sleeve; 230. Welding ring;

[0048] 30. Remote end assembly; 310. Electronics compartment; 3101. Electronics compartment body; 3102. First adapter; 3103. Second adapter; 3104. Second cavity; 320. Second signal processing module;

[0049] 40. First sealing member;

[0050] 50. First locking nut;

[0051] 60. Second sealing member;

[0052] 70. Second locking nut;

[0053] 80. Third seal;

[0054] 90. Fourth sealing member; 91. Lead wire; 92. Board mounting bracket; 93. Set screw. DETAILED DESCRIPTION

[0055] The present invention will be further described below with reference to the accompanying drawings.

[0056] Pressure transmitters, as a crucial component of field instrumentation in process industries like petrochemicals, chemical processing, and pharmaceuticals, are widely used in field equipment. The installation locations of pressure measurement points on production sites vary depending on the production equipment and processes. However, because production sites are high-risk environments and on-site maintenance personnel have defined and limited areas of activity, the distance between the instrument measurement location and the personnel's active area is often significant, making it difficult for on-site personnel to view measurement data and perform operations. Existing technologies have addressed this issue, such as extending the capillary length of flange-type pressure transmitters or using wireless pressure transmitters. However, when the capillary length of a flange-type pressure transmitter exceeds 15 meters, its temperature influence and hysteresis can severely impact instrument performance. Wireless pressure transmitters are also relatively sensitive to on-site electromagnetic interference, which increases with distance. Patent CN206146558U discloses a remote wireless temperature transmitter. While this patent utilizes a GPRS module to remotely display temperature information, it does not address the issue of on-site interference associated with wireless transmission. Existing patent CN217605167U discloses an electronic remote pressure transmitter. This patent uses two sensors communicating via a cable as positive and negative pressure sensors, and then calculates the differential pressure value within the tank. However, the display and operation terminals of this patent are still located at the measurement point, making remote display and operation impossible.

[0057] Example 1

[0058] like Figure 1 As shown, in order to solve the above technical problems, an embodiment of the present application provides a pressure transmitter, including a pressure sensing component 10, a cable assembly 20 and a remote end component 30; the pressure sensing component 10 is arranged at a point to be measured, and the pressure sensing component 10 includes a sensor 110, and the sensor 110 is used to sense the pressure of the point to be measured and generate a corresponding sensing electrical signal; one end of the cable assembly 20 is detachably arranged on the pressure sensing component 10, and the cable assembly 20 is electrically connected to the sensor 110; the remote end component 30 is detachably arranged at an end of the cable assembly 20 away from the pressure sensing component 10, the remote end component 30 is electrically connected to the cable assembly 20, and the remote end component 30 is used to receive the sensing electrical signal and display the corresponding pressure.

[0059] As can be seen from the above, by setting up a cable assembly 20 to remotely connect the pressure sensing assembly 10 and the remote end assembly 30, the sensing electrical signal detected by the pressure sensing assembly 10 is transmitted to the remote end assembly 30, and the corresponding pressure parameters are displayed through the remote end assembly 30, so that the staff can view the pressure and operate the transmitter on the remote end assembly 30 in a safe area; compared with the pressure transmitter that realizes remote display operation in the prior art, the utility model does not need to change the model of the pressure transmitter, nor does it affect the measurement performance of the pressure transmitter. Without increasing the number of pressure sensors 110 and electronic warehouses 310, it can realize remote display and operation of more than 100 meters, and is not affected by the on-site electromagnetic environment.

[0060] It should be noted that the sensor 110 includes but is not limited to a differential pressure sensor 110 , a pressure sensor 110 , and a remote flange-type transmitter. The specific structure and working principle of the sensor 110 are all existing technologies and will not be described in detail in this application.

[0061] It should also be noted that the point to be measured is selected according to the specific conditions of the production equipment and process. For example, the point to be measured may be a mounting hole reserved on a pipeline.

[0062] Example 2

[0063] like Figure 1 As shown, the pressure transmitter includes a pressure sensing component 10, a cable assembly 20 and a remote end component 30; the pressure sensing component 10 is arranged at the point to be measured, and the pressure sensing component 10 includes a sensor 110, which is used to sense the pressure of the point to be measured and generate a corresponding sensing electrical signal; one end of the cable assembly 20 is detachably arranged on the pressure sensing component 10, and the cable assembly 20 is electrically connected to the sensor 110; the remote end component 30 is detachably arranged at the end of the cable assembly 20 away from the pressure sensing component 10, the remote end component 30 is electrically connected to the cable assembly 20, and the remote end component 30 is used to receive the sensing electrical signal and display the corresponding pressure.

[0064] As can be seen from the above, by setting up a cable assembly 20 to remotely connect the pressure sensing assembly 10 and the remote end assembly 30, the sensing electrical signal detected by the pressure sensing assembly 10 is transmitted to the remote end assembly 30, and the corresponding pressure parameters are displayed through the remote end assembly 30, so that the staff can view the pressure and operate the transmitter on the remote end assembly 30 in a safe area; compared with the pressure transmitter that realizes remote display operation in the prior art, the utility model does not need to change the model of the pressure transmitter, nor does it affect the measurement performance of the pressure transmitter. Without increasing the number of pressure sensors 110 and electronic warehouses 310, it can realize remote display and operation of more than 100 meters, and is not affected by the on-site electromagnetic environment.

[0065] It should be noted that the sensor 110 includes but is not limited to a differential pressure sensor 110 , a pressure sensor 110 , and a remote flange-type transmitter. The specific structure and working principle of the sensor 110 are all existing technologies and will not be described in detail in this application.

[0066] It should also be noted that the point to be measured is selected according to the specific conditions of the production equipment and process. For example, the point to be measured may be a mounting hole reserved on a pipeline.

[0067] like Figure 1 、 Figure 2 As shown, in some embodiments, the pressure sensing assembly 10 further includes a first signal processing module 120 disposed in the sensor 110 , and the first signal processing module 120 is electrically connected to the sensor 110 and the cable assembly 20 , respectively.

[0068] The sensing electrical signal is received by the first signal processing module 120 , and is processed by calculation on the sensing electrical signal. The processed sensing electrical signal is then transmitted to the remote end component 30 through the cable component 20 .

[0069] It should be noted that the first signal processing module 120 is a data conversion card, which includes a circuit board and a circuit module arranged on the circuit board to amplify, filter, and perform other processing on the sensed electrical signal; of course, the data conversion card can also be provided with circuit modules with other functions as needed; the specific structure and working principle of the first signal processing module 120 are all existing technologies and will not be repeated in this application.

[0070] like Figure 1 、 Figure 3 As shown, in some embodiments, the remote end component 30 includes an electronic compartment 310 and a second signal processing module 320; the electronic compartment 310 is detachably connected to the cable assembly 20; the second signal processing module 320 is disposed in the electronic compartment 310, and the second signal processing module 320 is electrically connected to the electronic compartment 310 and the cable assembly 20, respectively.

[0071] The electronic compartment 310 provides space for the installation of the second signal processing module 320. The second signal processing module 320 receives the sensing electrical signal transmitted through the cable assembly 20, and performs calculations on the sensing electrical signal again. The processed sensing electrical signal is then transmitted to the electronic compartment 310, and the electronic compartment 310 displays the sensing electrical signal in the form of pressure parameters.

[0072] It should be noted that the second signal processing module 320 is a data conversion card, which includes a circuit board and a circuit module arranged on the circuit board to amplify, filter, and perform other processing on the sensed electrical signal; of course, the data conversion card can also be provided with circuit modules with other functions as needed; the specific structure and working principle of the second signal processing module 320 are all existing technologies and will not be repeated in this application.

[0073] It should also be noted that the first signal processing module 120 and the second signal processing module are set as needed. The pressure transmitter can be set with only the first signal processing module 120 or only the second signal processing module 320. Of course, the first signal processing module 120 and the second signal processing module 320 can also be set at the same time. This application does not impose specific restrictions.

[0074] like Figure 1 、 Figure 2 As shown, in some embodiments, the sensor 110 includes a sensor body 1101, a fixing seat 1102, a mounting seat 1103 and a sealing seat 1104; the fixing seat 1102 is arranged on the sensor body 1101, and an opening is provided at one end of the fixing seat 1102 away from the sensor body 1101; the mounting seat 1103 is threadedly connected to the outer wall of the fixing seat 1102, and a mounting hole connected to the opening is provided at one end of the mounting seat 1103 away from the sensor body 1101; the sealing seat 1104 is passed through the mounting hole, and a sealing step surface 1105 is provided at one end of the sealing seat 1104 close to the sensor body 1101, and the sealing step surface 1105 is in contact with the end face of the fixing seat 1102. A first sealing hole is provided at one end of the sealing seat 1104 away from the sensor body 1101, and the sealing seat 1104, the mounting seat 1103 and the fixing seat 1102 jointly form a first cavity 1107; wherein, the first signal processing module 120 is arranged in the first cavity 1107.

[0075] By arranging a fixing seat 1102, a mounting seat 1103 and a sealing seat 1104 on the sensor body 1101, an installation space is provided for the first signal processing module 120 to avoid the first signal processing module 120 being exposed to the outside; through the threaded connection between the mounting seat 1103 and the fixing seat 1102, the sealing step surface 1105 abutting against the inner wall of the mounting seat 1103, and the second sealing step surface 1105 abutting against the end face of the fixing seat 1102, the sealing seat 1104 and the mounting seat 1103 are fixed on the fixing seat 1102 at the same time, and disassembly and assembly are simple and convenient.

[0076] It should be noted that if Figure 2 As shown, the first signal processing module 120 is installed in the first cavity 1107 through the board mounting bracket 92 , and the first signal processing module 120 is electrically connected to the sensor body 1101 through the lead 91 .

[0077] It should also be noted that if Figure 2 As shown, an external thread is provided on the outer wall of the fixing seat 1102, and an internal thread is provided on the inner wall of the mounting seat 1103. The fixing seat 1102 and the mounting seat 1103 are connected through the cooperation of the external thread and the internal thread. In addition, a first threaded hole is provided on the outer wall of the fixing seat 1102, and a second threaded hole is provided on the mounting seat 1103 that passes through the mounting seat 1103 in the radial direction. The first threaded hole is aligned with the second threaded hole, and the set screw 93 is connected with the first threaded hole and the second threaded hole. Thus, the fixing of the fixing seat 1102 and the mounting seat 1103 is achieved.

[0078] It should also be noted that if Figure 2 As shown, the sealing seat 1104 includes a cable sealing head 1110 passing through the mounting hole, a welding block 1109 welded to one end of the cable sealing head 1110 close to the sensor body 1101 , and a sealing step surface 1105 is provided on the outer wall of the welding block 1109 .

[0079] It should also be noted that a transition hole communicating with the first sealing hole is provided on the sealing seat 1104 , so as to allow the cable 210 to pass through and be electrically connected to the first signal processing module 120 .

[0080] like Figure 1 、 Figure 3 As shown, in some embodiments, the electronic warehouse 310 includes an electronic warehouse body 3101, a first adapter seat 3102 and a second adapter seat 3103; the electronic warehouse body 3101 includes a display screen for displaying pressure parameters; the first adapter seat 3102 is threadedly connected to the electronic warehouse body 3101, and the first adapter seat 3102 and the electronic warehouse body 3101 together form a second cavity 3104; the second adapter seat 3103 is threadedly connected to the end of the first adapter seat 3102 away from the electronic warehouse body 3101, and a second sealing hole is provided at the end of the second adapter seat 3103 away from the first adapter seat 3102; wherein, the second signal processing module 320 is arranged in the second cavity 3104.

[0081] The pressure of the point to be measured is displayed through the electronic compartment body 3101, providing a structural basis for remote display and remote operation of the pressure transmitter; the first adapter 3102 and the second adapter 3103 provide installation space for the second signal processing module 320 to prevent the second signal processing module 320 from being exposed.

[0082] It should be noted that if Figure 3As shown, an external thread is provided on the outer wall of the first adapter seat 3102, and an internal thread is provided on the inner wall of the electronic warehouse body 3101. The first adapter seat 3102 is connected to the electronic warehouse body 3101 through the cooperation of the external thread and the internal thread; in addition, a third threaded hole is also provided on the outer wall of the first adapter seat 3102, and a fourth threaded hole is provided on the electronic warehouse body 3101 which passes through the electronic warehouse body 3101 in the radial direction. The third threaded hole is aligned with the fourth threaded hole, and the set screw 93 is connected to the third threaded hole and the fourth threaded hole; thereby realizing the fixation of the first adapter seat 3102 and the electronic warehouse body 3101.

[0083] It should also be noted that the first adapter seat 3102 is provided with an adapter hole that passes through the first adapter seat 3102 in the axial direction, and the adapter hole includes a first hole section, a second hole section and a third hole section that are connected in sequence, and a first adapter step surface is formed between the first hole section and the second hole section, and a second adapter step surface is formed between the second hole section and the third hole section; wherein, the second signal processing module 320 is installed on the first adapter step surface through the board mounting bracket 92, and the second adapter seat 3103 is threadedly connected to the third hole section, and the cable 210 is connected to the second signal processing module 320 through the adapter hole.

[0084] It should also be noted that if Figure 3 As shown, the second signal processing module 320 is connected to the electronic chamber body 3101 via a lead 91 .

[0085] It should also be noted that the electronic compartment body 3101 includes a housing and electronic components disposed within the housing, including but not limited to a circuit board and a chip disposed thereon. The electronic compartment body 3101 also includes buttons disposed thereon, which are used to perform operations such as range setting and zeroing of the pressure sensing assembly 10. A display screen is disposed on the housing. The electronic compartment body 3101 receives the sensed electrical signals and converts them into corresponding pressure signals for display. The specific structure and operating principles of the electronic compartment body 3101 are conventional and will not be further elaborated herein.

[0086] It should also be noted that the second adapter 3103 is provided with a transmission hole connected to the second sealing hole, so that the cable 210 can pass through and be electrically connected to the second signal processing module 320 .

[0087] like Figure 2 、 Figure 3 As shown, in some embodiments, the cable assembly 20 includes a cable 210, a sleeve 220 and two welding rings 230; the sleeve 220 is arranged on the outer wall of the cable 210; the two welding rings 230 are respectively arranged at both ends of the sleeve 220, one of the two welding rings 230 is located in the first sealing hole, and the other welding ring 230 of the two welding rings 230 is located in the second sealing hole.

[0088] The sleeve 220 is provided to protect the cable 210 , and the welding ring 230 is used to provide a sealing effect for the connection between the cable 210 and the pressure sensing assembly 10 and the remote end assembly 30 , thereby ensuring that no liquid enters the sleeve.

[0089] It should be noted that the material of the sleeve can be a stainless steel armored tube or an anti-corrosion plastic sleeve. When the sleeve is an anti-corrosion plastic sleeve, the welding ring 230 may not be provided. In addition, under non-corrosion or low-corrosion working conditions, the welding ring 230 and the sleeve may not be provided.

[0090] It should also be noted that the welding ring 230 is connected to the sleeve including but not limited to being connected by welding, and the cable 210 is passed through the sleeve.

[0091] like Figure 1 、 Figure 2 As shown, in some embodiments, the pressure transmitter further includes a first seal 40 and a first locking nut 50; the first seal 40 is arranged in the first sealing hole, and the first seal 40 abuts against the end face of one of the two welding rings 230 close to the sensor body 1101; the first locking nut 50 is threadedly connected to the first sealing hole, and the first locking nut 50 abuts against the end face of one of the two welding rings 230 away from the first seal 40; wherein, one end of the cable 210 is sequentially passed through the first locking nut 50 and the first seal 40, and is electrically connected to the first signal processing module 120.

[0092] By providing the first seal 40 and the first locking nut 50, not only can the cable assembly and the pressure sensing assembly 10 be detachably connected, but also sealing can be achieved to prevent water ingress; when the welding ring 230 is in contact with the first seal 40 and one end of the cable 210 is passed through the first seal 40, the first locking nut 50 is tightened, the first locking nut 50 presses the welding ring 230, and the first seal 40 is deformed by force, reducing the gap between the first seal 40 and the first sealing hole, thereby achieving detachable connection and sealing.

[0093] It should be noted that the first sealing member 40 includes but is not limited to a rubber sealing member, and a through hole is provided on the first sealing member 40 for the cable 210 to pass through; in addition, the first locking nut 50 is provided with a second through hole for the cable 210 to pass through.

[0094] like Figure 1 、 Figure 3As shown, in some embodiments, the pressure transmitter also includes a second seal 60 and a second locking nut 70; the second seal 60 is arranged in the second sealing hole, and the second seal 60 abuts against the other welding ring 230 of the two welding rings 230 at one end close to the electronic compartment body 3101; the second locking nut 70 is threadedly connected to the second sealing hole, and the second locking nut 70 abuts against the end face of the other welding ring 230 of the two welding rings 230 away from the second seal 60; wherein, one end of the cable 210 is sequentially passed through the second locking nut 70 and the second seal 60, and is electrically connected to the second signal processing module 320.

[0095] By providing the second sealing member 60 and the second locking nut 70, not only can the cable assembly and the remote end assembly 30 be detachably connected, but also sealing can be achieved to prevent water ingress; when the welding ring 230 is in contact with the second sealing member 60 and one end of the cable 210 is passed through the second sealing member 60, the second locking nut 70 is tightened, and the second locking nut 70 presses the welding ring 230, and the second sealing member 60 is deformed by force, reducing the gap between the second sealing member 60 and the second sealing hole, thereby achieving detachable connection and sealing.

[0096] It should be noted that the second sealing member 60 includes but is not limited to a rubber sealing member, and a through hole is provided on the second sealing member 60 for the cable 210 to pass through; in addition, the second locking nut 70 is provided with a third through hole for the cable 210 to pass through.

[0097] like Figure 2 、 Figure 3 As shown, in some embodiments, the inner diameter of the first sealing hole gradually decreases along the axis toward the sensor body 1101, and the inner diameter of the second sealing hole gradually decreases along the axis toward the electronic chamber body 3101.

[0098] By setting the inner diameter of the first sealing hole to gradually decrease along the axis toward the sensor body 1101, the sealing between the first sealing member 40 and the first sealing hole is further improved to prevent water from entering; by setting the inner diameter of the second sealing hole to gradually decrease along the axis toward the electronic compartment body 3101, the sealing between the second sealing member 60 and the second sealing hole is further improved to prevent water from entering.

[0099] It should be noted that the diameter of the first sealing member 40 gradually decreases along the axis toward the sensor body 1101 ; the diameter of the second sealing member 60 gradually decreases along the axis toward the electronic compartment body 3101 .

[0100] like Figure 2 、 Figure 3As shown, in some embodiments, the pressure transmitter also includes a third seal 80 and a fourth seal 90; the third seal 80 is arranged between the sealing seat 1104 and the fixing seat 1102; the fourth seal 90 is arranged between the first adapter seat 3102 and the electronic compartment body 3101.

[0101] By setting the third sealing member 80, the sealing seat 1104 and the mounting seat 1103 can be sealed. Therefore, when installing the fixing seat 1102, the angle can be freely rotated without affecting the sealing effect. Therefore, the fixing seat 1102 can be rotated to the required angle and then fixed with the set screw 93. That is, the electronic compartment 310 can be installed according to the required angle, which is convenient for on-site inspection and operation without causing the cable 210 or the sleeve to twist and reduce the service life.

[0102] It should be noted that the third sealing member 80 and the fourth sealing member 90 may be rubber sealing rings.

[0103] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A pressure transmitter, characterized in that: include: A pressure sensing assembly is provided at a point to be measured, the pressure sensing assembly comprising a sensor for sensing the pressure at the point to be measured and generating a corresponding sensing electrical signal; a cable assembly, one end of which is detachably mounted on the pressure sensing assembly, and the cable assembly is electrically connected to the sensor; as well as The remote end component is detachably arranged at one end of the cable assembly away from the pressure sensing component. The remote end component is electrically connected to the cable assembly and is used to receive the sensing electrical signal and display the corresponding pressure.

2. The pressure transmitter according to claim 1, characterized in that: The pressure sensing assembly further includes a first signal processing module disposed in the sensor, and the first signal processing module is electrically connected to the sensor and the cable assembly respectively.

3. The pressure transmitter according to claim 2, characterized in that: The remote end components include: an electronic compartment detachably connected to the cable assembly; and The second signal processing module is disposed in the electronic compartment, and the second signal processing module is electrically connected to the electronic compartment and the cable assembly respectively.

4. The pressure transmitter according to claim 3, characterized in that: The sensor comprises: Sensor body; A fixing seat is provided on the sensor body, wherein an end of the fixing seat away from the sensor body is provided with an opening; a mounting seat, threadedly connected to an outer wall of the fixing seat, wherein an end of the mounting seat away from the sensor body is provided with a mounting hole communicating with the opening; and a sealing seat, which is inserted into the mounting hole, and a sealing step surface is provided at one end of the sealing seat close to the sensor body, wherein the sealing step surface abuts against the end surface of the fixing seat, and a first sealing hole is provided at one end of the sealing seat away from the sensor body, and the sealing seat, the mounting seat and the fixing seat jointly form a first cavity; Wherein, the first signal processing module is arranged in the first cavity.

5. The pressure transmitter according to claim 4, characterized in that: The electronic warehouse includes: The electronic chamber body includes a display screen for displaying pressure parameters; a first adapter, threadedly connected to the electronic compartment body, wherein the first adapter and the electronic compartment body together form a second cavity; and A second adapter seat is threadedly connected to an end of the first adapter seat away from the electronic compartment body, and a second sealing hole is provided at the end of the second adapter seat away from the first adapter seat; Wherein, the second signal processing module is disposed in the second cavity.

6. The pressure transmitter according to claim 5, characterized in that: The cable assembly comprises: Cables; a sleeve, disposed on an outer wall of the cable; and Two welding rings are respectively arranged at two ends of the sleeve, one of the two welding rings is located in the first sealing hole, and the other welding ring is located in the second sealing hole.

7. The pressure transmitter according to claim 6, characterized in that: The pressure transmitter further comprises: a first sealing member disposed in the first sealing hole, the first sealing member abutting against an end surface of one of the two welding rings close to the sensor body; and a first locking nut threadedly connected to the first sealing hole, the first locking nut abutting against an end surface of one of the two welding rings away from the first sealing member; One end of the cable is sequentially passed through the first locking nut and the first seal, and is electrically connected to the first signal processing module.

8. The pressure transmitter according to claim 6, characterized in that: The pressure transmitter also includes: a second sealing member disposed in the second sealing hole, the second sealing member abutting against an end of the other welding ring of the two welding rings close to the electronic compartment body; and a second locking nut threadedly connected to the second sealing hole, the second locking nut abutting against an end surface of the other welding ring away from the second sealing member; One end of the cable is sequentially passed through the second locking nut and the second sealing member, and is electrically connected to the second signal processing module.

9. The pressure transmitter according to any one of claims 5 to 8, characterized in that: The inner diameter of the first sealing hole gradually decreases along the axis toward the sensor body, and the inner diameter of the second sealing hole gradually decreases along the axis toward the electronic compartment body.

10. The pressure transmitter according to any one of claims 5 to 8, characterized in that: The pressure transmitter further comprises: A third sealing member is provided between the sealing seat and the fixing seat; and The fourth sealing member is arranged between the first adapter and the electronic compartment body.

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