Explosion-proof differential pressure transmitter

Abstract

The utility model relates to the technical field of differential pressure transmitters, and discloses an explosion-proof differential pressure transmitter, which comprises a bottom plate, an explosion-proof mechanism is arranged on the surface of the bottom plate, a differential pressure sensor body is arranged at the top of the bottom plate, and a sensor protection mechanism is arranged on the surface of the differential pressure sensor body. Mounting ports are formed in the bottoms of the left end and the right end of the differential pressure sensor body, the differential pressure sensor body is protected through the anti-explosion protective cover during use, wiring is carried out through the wiring port, data observation is carried out through the front observation port, and the anti-explosion protective cover is integrally easy to disassemble and convenient to use. The bottom mounting block can be taken out from the interior of the bayonet socket so as to take down the explosion-proof protective cover by pulling the connecting block to pull out the insertion column from the first insertion opening and the second insertion opening, the differential pressure sensor body can be effectively protected through the arrangement of the mechanism, and meanwhile, the differential pressure sensor is convenient to mount and dismount; and the service cycle and the service life of the differential pressure sensor body can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of differential pressure transmitters, in particular to an explosion-proof differential pressure transmitter. Background Art

[0002] A differential pressure transmitter measures the pressure difference between the two ends of the transmitter and outputs a standard signal (such as 4~20mA, 0~5V). Differential pressure transmitters differ from general pressure transmitters in that they both have two pressure interfaces. Differential pressure transmitters are generally divided into positive pressure end and negative pressure end. Under normal circumstances, the pressure at the positive pressure end of the differential pressure transmitter should be greater than the pressure at the negative pressure end in order to measure.

[0003] According to a new differential pressure transmitter disclosed on the patent website (authorization announcement number: CN219573350U), "the utility model discloses a new differential pressure transmitter, which relates to the technical field of differential pressure transmitters, including an electronic housing and a pressure chamber. An electronic module is arranged inside the electronic housing, and a first connecting pipe is fixedly connected to the lower end of the electronic housing. A first threaded pipe is threadedly connected to the inside of the first connecting pipe, a second connecting pipe is fixedly connected to the lower end of the first threaded pipe, and a fixed pipe is fixedly connected to the lower end of the second connecting pipe. A detection module is arranged inside the fixed pipe, and two groups of pressure chambers are provided. An anti-shock component is arranged inside the access head, and a connection head is fixedly connected to the outside of the pressure chamber. When the measured gas or liquid flows into the access head, the fan-shaped blades and the rotating shaft are driven to rotate, offsetting most of the impact force. The filter screen can prevent the presence of impurities or crystals in the measured material, which may cause the isolation diaphragm to be scratched, thereby protecting the core components inside the differential pressure transmitter, avoiding damage and extending the service life."

[0004] Based on the above, the applicant believes that the following defects exist:

[0005] This new differential pressure transmitter includes an electronic housing and a pressure chamber. When the measuring gas or liquid flows into the inside of the access head, it drives the fan-shaped blades and the rotating shaft to rotate, offsetting most of the impact force. The filter screen can prevent the presence of impurities or crystals in the measured substance, which may cause the isolation diaphragm to be scratched, thereby protecting the core components inside the differential pressure transmitter, avoiding damage and extending the service life. The sensor is exposed to the outside world as a whole when in use. When the pressure of the equipment is too high, the sensor body will burst, which will reduce the service cycle and service life of the device. Utility Model Content

[0006] The purpose of the present utility model is to provide an explosion-proof differential pressure transmitter to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an explosion-proof differential pressure transmitter, comprising a base plate, an explosion-proof mechanism provided on the surface of the base plate, a differential pressure sensor body provided on the top of the base plate, and a sensor protection mechanism provided on the surface of the differential pressure sensor body;

[0008] The explosion-proof mechanism includes an explosion-proof protective cover, which is arranged on the top of the base plate. The four corners of the bottom of the explosion-proof protective cover are fixedly connected to a bottom mounting block. A first socket is provided on the surface of the bottom mounting block. The left and right ends of the surface of the explosion-proof protective cover are fixedly connected to wiring ports. A sealing sleeve is installed on the surface of the wiring port. A front observation port is fixedly connected to the top of the front of the explosion-proof protective cover. The four corners of the top of the base plate are provided with mounting grooves. A socket is fixedly connected to the inside of the mounting groove. A second socket is provided on the surface of the socket. A fixed block is fixedly connected to the outer end of the mounting groove. A spring is fixedly connected to the inside of the fixed block. Column, the inner end of the spring column is fixedly connected to a connecting block, and the inner end of the connecting block is fixedly connected to a plug-in column. The differential pressure sensor body is protected by an explosion-proof protective cover when in use, wiring is performed through the wiring port, and data is observed through the front observation port. The explosion-proof protective cover is easy to disassemble as a whole. By pulling the connecting block to pull the plug-in column out of the first socket and the second socket, the bottom mounting block can be taken out from the inside of the socket to remove the explosion-proof protective cover. The setting of this mechanism can effectively protect the differential pressure sensor body, facilitate installation and disassembly, and effectively improve the service life and service life of the differential pressure sensor body.

[0009] Preferably, the bottom mounting block is plugged into the socket, and the first socket and the second socket correspond to each other.

[0010] Preferably, the connecting block is fixedly connected to an end of the spring column away from the fixed block, and the plug-in column is plugged into the first socket and the second socket.

[0011] Preferably, the sensor protection mechanism includes an outer protective ring, which is arranged at the left and right ends of the surface of the differential pressure sensor body, and a mounting connection seat is fixedly connected to the top of the outer protective ring, and a mounting connection port is opened on the surface of the mounting connection seat, and a mounting bolt is arranged inside the mounting connection port. A protective telescopic column is fixedly connected to the inner side of the outer protective ring, and a spring is provided on the surface of the protective telescopic column. The inner end of the protective telescopic column is fixedly connected to the inner end of the protective telescopic column, and the inner end of the surface of the built-in protective ring is fixedly connected to the auxiliary connecting plate. The differential pressure sensor body can be protected by the built-in protective ring, the protective telescopic column and the spring. The sensor protection mechanism is provided at the front and rear ends of the surface of the differential pressure sensor body. When used in conjunction with the explosion-proof mechanism, the safe use efficiency and service life of the differential pressure sensor body can be further improved.

[0012] Preferably, four groups of outer protective rings and inner protective rings are provided, and the inner protective ring is fixedly connected to one end of the protective telescopic column away from the outer protective ring.

[0013] Preferably, mounting openings are provided at the bottom of the left and right ends of the differential pressure sensor body, mounting seats are fixedly connected to the left and right ends of the center of the top of the base plate, and mounting columns are fixedly connected to the inner ends of the mounting seats.

[0014] Compared with the existing technology, the utility model provides an explosion-proof differential pressure transmitter with the following beneficial effects:

[0015] 1. The explosion-proof differential pressure transmitter is provided with an explosion-proof mechanism. The differential pressure sensor body is protected by an explosion-proof protective cover when in use. Wiring is performed through the wiring port, and data is observed through the front observation port. The explosion-proof protective cover is easy to disassemble as a whole. By pulling the connecting block to pull out the plug-in column from the first socket and the second socket, the bottom mounting block can be removed from the inside of the socket to remove the explosion-proof protective cover. The setting of this mechanism can effectively protect the differential pressure sensor body, facilitate installation and disassembly, and effectively improve the service life and service life of the differential pressure sensor body.

[0016] 2. The explosion-proof differential pressure transmitter is equipped with a sensor protection mechanism. The differential pressure sensor body can be protected by a built-in protective ring, a protective telescopic column and a spring. Sensor protection mechanisms are provided on both the front and rear ends of the differential pressure sensor body. When used in conjunction with the explosion-proof mechanism, the safe use efficiency and service life of the differential pressure sensor body can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the differential pressure sensor structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structural base plate of the utility model;

[0021] Figure 4 This is a schematic diagram of the explosion-proof protective cover of the utility model structure;

[0022] Figure 5 This is a schematic diagram of the explosion-proof mechanism of the utility model;

[0023] Figure 6 This is a schematic diagram of the structural sensor protection mechanism of the utility model.

[0024] In the figure: 1. Base plate; 2. Differential pressure sensor body; 3. Mounting port; 4. Mounting seat; 5. Mounting column; 6. Explosion-proof mechanism; 61. Explosion-proof protective cover; 62. Bottom mounting block; 63. First socket; 64. Wiring port; 641. Sealing sleeve; 65. Front observation port; 66. Mounting slot; 67. Plug-in seat; 68. Second socket; 69. Fixing block; 601. Spring column; 602. Connecting block; 603. Plug-in column; 7. Sensor protection mechanism; 71. Outer protective ring; 72. Mounting connecting seat; 73. Mounting connecting port; 74. Mounting bolt; 75. Protective telescopic column; 76. Spring; 77. Built-in protective ring; 78. Auxiliary connecting plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] The utility model provides the following technical solutions:

[0028] Example 1

[0029] See also Figure 1-6 An explosion-proof differential pressure transmitter includes a base plate 1, an explosion-proof mechanism 6 is provided on the surface of the base plate 1, a differential pressure sensor body 2 is provided on the top of the base plate 1, and a sensor protection mechanism 7 is provided on the surface of the differential pressure sensor body 2;

[0030] The explosion-proof mechanism 6 includes an explosion-proof protective cover 61, which is arranged on the top of the base plate 1. The four corners of the bottom of the explosion-proof protective cover 61 are fixedly connected to the bottom mounting block 62. The surface of the bottom mounting block 62 is provided with a first socket 63. The left and right ends of the surface of the explosion-proof protective cover 61 are fixedly connected to the wiring port 64. The surface of the wiring port 64 is provided with a sealing sleeve 641. The top of the front of the explosion-proof protective cover 61 is fixedly connected to the front observation port 65. The four corners of the top of the base plate 1 are provided with a mounting groove 66. The inner side of the mounting groove 66 is fixedly connected to the socket 67. The surface of the socket 67 is provided with a second socket 68. The outer end of the mounting groove 66 is fixedly connected to the fixing block 69. The inner side of the fixing block 69 is fixedly connected to the spring column 601. The spring column 6 01 inner end is fixedly connected with a connecting block 602, and the inner end of the connecting block 602 is fixedly connected with a plug-in column 603. The differential pressure sensor body 2 is protected by an explosion-proof protective cover 61 when in use, and wiring is performed through the wiring port 64, and data is observed through the front observation port 65. The explosion-proof protective cover 61 is easy to disassemble as a whole. By pulling the connecting block 602 to pull the plug-in column 603 out of the first socket 63 and the second socket 68, the bottom mounting block 62 can be taken out from the inside of the socket 67 to remove the explosion-proof protective cover 61. The setting of this mechanism can effectively protect the differential pressure sensor body 2, and at the same time facilitate installation and disassembly, which can effectively improve the service life and service life of the differential pressure sensor body 2.

[0031] The bottom mounting block 62 is plugged into the socket 67, and the first socket 63 and the second socket 68 correspond to each other;

[0032] The connecting block 602 is fixedly connected to one end of the spring column 601 away from the fixing block 69 , and the plug-in column 603 is plugged into the first socket 63 and the second socket 68 .

[0033] Example 2

[0034] See also Figure 1-6 , and on the basis of Example 1, the sensor protection mechanism 7 is further obtained to include an outer protection ring 71, the outer protection ring 71 is arranged at the left and right ends of the surface of the differential pressure sensor body 2, the top of the outer protection ring 71 is fixedly connected to a mounting connection seat 72, the surface of the mounting connection seat 72 is provided with a mounting connection port 73, and a mounting bolt 74 is provided inside the mounting connection port 73. A protection telescopic column 75 is fixedly connected to the inner side of the outer protection ring 71, and a spring 76 is sleeved on the surface of the protection telescopic column 75. The inner end of the protection telescopic column 75 is fixedly connected to the built-in protection ring 77, and the inner end of the surface of the built-in protection ring 77 is fixedly connected to the auxiliary connecting plate 78. The built-in protection ring 77, the protection telescopic column 75 and the spring 76 can protect the differential pressure sensor body 2. The sensor protection mechanism 7 is provided at both the front and rear ends of the surface of the differential pressure sensor body 2. When used in conjunction with the explosion-proof mechanism 6, the safe use efficiency and service life of the differential pressure sensor body 2 can be further improved.

[0035] Four sets of outer protective rings 71 and inner protective rings 77 are provided, and the inner protective rings 77 are fixedly connected to the end of the protective telescopic column 75 away from the outer protective ring 71;

[0036] Mounting openings 3 are provided at the bottom of the left and right ends of the differential pressure sensor body 2 , mounting seats 4 are fixedly connected to the left and right ends of the top center of the bottom plate 1 , and mounting columns 5 are fixedly connected to the inner ends of the mounting seats 4 .

[0037] During actual operation, when this device is used, the differential pressure sensor body 2 is installed on the top of the base plate 1 through the mounting port 3, the mounting seat 4 and the mounting column 5. The differential pressure sensor body 2 is protected by the explosion-proof protective cover 61 when in use, wiring is performed through the wiring port 64, and data is observed through the front observation port 65. The explosion-proof protective cover 61 is easy to disassemble as a whole. By pulling the connecting block 602 to pull the plug column 603 out of the first socket 63 and the second socket 68, the bottom mounting block 62 can be removed from the inside of the plug seat 67 to remove the explosion-proof protective cover 61. The setting of this mechanism can effectively protect the differential pressure sensor body 2 and facilitate installation and disassembly, which can effectively improve the service life and service life of the differential pressure sensor body 2. The built-in protective ring 77, the protective telescopic column 75 and the spring 76 can protect the differential pressure sensor body 2. Sensor protection mechanisms 7 are provided at the front and rear ends of the surface of the differential pressure sensor body 2. Use in conjunction with the explosion-proof mechanism 6 can further improve the safe use efficiency and service life of the differential pressure sensor body 2.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. An explosion-proof differential pressure transmitter, comprising a base plate (1), characterized in that: An explosion-proof mechanism (6) is provided on the surface of the base plate (1), a differential pressure sensor body (2) is provided on the top of the base plate (1), and a sensor protection mechanism (7) is provided on the surface of the differential pressure sensor body (2); The explosion-proof mechanism (6) includes an explosion-proof protective cover (61), which is arranged on the top of the bottom plate (1). The four corners of the bottom of the explosion-proof protective cover (61) are fixedly connected to the bottom mounting blocks (62), and the surface of the bottom mounting block (62) is provided with a first socket (63). The left and right ends of the surface of the explosion-proof protective cover (61) are fixedly connected to the wiring ports (64), and the surface of the wiring ports (64) is provided with a sealing sleeve (641). The top of the front of the explosion-proof protective cover (61) is fixedly connected to the front observation port ( 65), the top four corners of the bottom plate (1) are provided with mounting grooves (66), the inner side of the mounting groove (66) is fixedly connected to a socket (67), the surface of the socket (67) is provided with a second socket (68), the outer end of the mounting groove (66) is fixedly connected to a fixing block (69), the inner side of the fixing block (69) is fixedly connected to a spring column (601), the inner end of the spring column (601) is fixedly connected to a connecting block (602), and the inner end of the connecting block (602) is fixedly connected to a plug column (603).

2. The explosion-proof differential pressure transmitter according to claim 1, characterized in that: The bottom mounting block (62) is plugged into the interior of the socket (67), and the first socket (63) and the second socket (68) correspond to each other.

3. The explosion-proof differential pressure transmitter according to claim 1, characterized in that: The connecting block (602) is fixedly connected to one end of the spring column (601) away from the fixed block (69), and the plug-in column (603) is plugged into the first socket (63) and the second socket (68).

4. The explosion-proof differential pressure transmitter according to claim 1, characterized in that: The sensor protection mechanism (7) includes an outer protective ring (71), which is arranged at the left and right ends of the surface of the differential pressure sensor body (2), and a mounting connection seat (72) is fixedly connected to the top of the outer protective ring (71), and a mounting connection port (73) is provided on the surface of the mounting connection seat (72), and a mounting bolt (74) is provided inside the mounting connection port (73). A protective telescopic column (75) is fixedly connected to the inner side of the outer protective ring (71), and a spring (76) is provided on the surface of the protective telescopic column (75). The inner end of the protective telescopic column (75) is fixedly connected to an internal protective ring (77), and the inner end of the surface of the internal protective ring (77) is fixedly connected to an auxiliary connecting plate (78).

5. The explosion-proof differential pressure transmitter according to claim 4, characterized in that: Four groups of the outer protective ring (71) and the inner protective ring (77) are provided, and the inner protective ring (77) is fixedly connected to one end of the protective telescopic column (75) away from the outer protective ring (71).

6. The explosion-proof differential pressure transmitter according to claim 1, characterized in that: The bottom of the left and right ends of the differential pressure sensor body (2) are provided with mounting openings (3), the left and right ends of the top center of the bottom plate (1) are fixedly connected to mounting seats (4), and the inner ends of the mounting seats (4) are fixedly connected to mounting columns (5).

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