CN112378567A

CN112378567A - Prevent disconnected differential pressure transmitter

Info

Publication number: CN112378567A
Application number: CN202011264842.XA
Authority: CN
Inventors: 贺小刚
Original assignee: Xi'an Fenghui Measurement And Control Engineering Co ltd
Current assignee: Xi'an Fenghui Measurement And Control Engineering Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-02-19

Abstract

The invention discloses a breakage-proof differential pressure transmitter which comprises a transmitter, wherein a connecting plate is arranged at the top of the transmitter, a junction box is arranged at the top of the connecting plate, a cable fixing block is arranged in the middle of one side of the junction box, lug plates are arranged on two sides of the cable fixing block respectively, bolt holes are formed in the lug plates, fixing bolts are arranged in the bolt holes and fixedly connect the lug plates with the junction box together, a wire cavity is arranged in the center of one side, away from the junction box, of the cable fixing block, a plurality of first extrusion blocks are arranged on the inner wall of the wire cavity, a wiring pipe is arranged in the center of the inner part of the wire cavity, and a wire binding belt is arranged. Has the advantages that: the interaction of first extrusion piece and second extrusion piece makes the connecting wire can not take place hard extrusion with the terminal box when the swing to avoid the impaired of connecting wire, improve life, a plurality of spring is concertina movement simultaneously and also can plays the spacing effect of elasticity.

Description

Prevent disconnected differential pressure transmitter

Technical Field

The invention relates to the technical field of transmitters, in particular to a breakage-proof differential pressure transmitter.

Background

The differential pressure transmitter is used for measuring the pressure difference between two ends of the transmitter and outputting a standard signal (such as 420 mA, 0 to 5V). The differential pressure transmitter is different from a common pressure transmitter in that the differential pressure transmitter is provided with 2 pressure interfaces, the differential pressure transmitter is generally divided into a positive pressure end and a negative pressure end, and the pressure of the positive pressure end of the differential pressure transmitter can be measured only when being larger than the pressure of a negative pressure section.

Differential pressure transmitter connecting wire on the existing market generally is the rigid connection with the through wires hole of terminal box, and the wearing and tearing of connecting wire, patent number can be caused to the friction between connecting wire and the terminal box: 201720319265.7 discloses a friction reducing differential pressure transmitter, but the flexible connection is not good and does not provide a sealing effect, so it is necessary to improve its design.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

The invention provides a breakage-proof differential pressure transmitter aiming at the problems in the related art, and aims to overcome the technical problems in the prior related art.

Therefore, the invention adopts the following specific technical scheme:

a breakage-proof differential pressure transmitter comprises a transmitter, wherein a connecting plate is arranged at the top of the transmitter, a junction box is arranged at the top of the connecting plate, a cable fixing block is arranged in the middle of one side of the junction box, lug plates are arranged on two sides of the cable fixing block respectively, bolt holes are formed in the lug plates, fixing bolts are arranged in the bolt holes and fixedly connect the lug plates with the junction box, a wire cavity is arranged at the center of one side, away from the junction box, of the cable fixing block, a plurality of first extrusion blocks are arranged on the inner wall of the wire cavity, a junction pipe is arranged in the center of the inner part of the wire cavity, a wire binding belt is arranged in the junction pipe, a wire threading hole is arranged in the wire binding belt, a plurality of second extrusion blocks are arranged on the outer surface of the junction pipe, and the outer surfaces of the, the outer surfaces of the two ends of the wiring pipe are provided with springs, and spring washers are arranged on the two sides of each spring.

Preferably, a through hole matched with the wiring pipe is formed in one side, close to the cable fixing block, of the junction box.

Preferably, the first extrusion block and the second extrusion block are both of a hemispherical structure, and both the first extrusion block and the second extrusion block are made of rubber materials.

Preferably, the number of the second pressing blocks is 10, and the number of the first pressing blocks and the number of the springs are 5.

Preferably, the first squeezing blocks and the spring are arranged in a staggered manner along the inner wall of the wire cavity in the circumferential direction, and two second squeezing blocks correspond to one first squeezing block.

Preferably, the spring is an extension spring, and the spring washers at two ends of the spring are respectively fixedly connected with the outer surface of the wire connecting tube and the outer surface of the wire cavity.

Preferably, a through hole matched with the wiring pipe is formed in one side, close to the cable fixing block, of the junction box, the first extrusion block and the second extrusion block are of hemispherical structures, and the first extrusion block and the second extrusion block are made of rubber materials. The quantity of second extrusion piece is individual, first extrusion piece with the quantity of spring is individual, first extrusion piece with the spring along the crisscross setting of the circumferencial direction inner wall in line chamber, and two the second extrusion piece corresponds one first extrusion piece, the spring is extension spring, the spring both ends spring washer respectively with the surface of wiring pipe and the surface connection of line chamber is fixed.

The invention has the beneficial effects that: the cable tie extrudes the outer surface of the connecting wire, thereby achieving the effect of sealing the junction box; the interaction of first extrusion piece and second extrusion piece makes the connecting wire can not take place hard extrusion with the terminal box when the swing to avoid the impaired of connecting wire, improve life, a plurality of spring is concertina movement simultaneously and also can plays the spacing effect of elasticity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic block diagram of a break-resistant differential pressure transmitter in accordance with an embodiment of the present invention;

FIG. 2 is a schematic diagram of the internal structure of a line chamber of a break-resistant differential pressure transmitter, according to an embodiment of the present invention.

In the figure:

1. a transmitter; 2. a connecting plate; 3. a junction box; 4. a cable fixing block; 5. an ear plate; 6. bolt holes; 7. fixing the bolt; 8. a wire lumen; 9. a first extrusion block; 10. a wire connecting pipe; 11. a second extrusion block; 12. a spring washer; 13. a spring; 14. a cable tie; 15. and (6) threading holes.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, a break-resistant differential pressure transmitter is provided.

Embodiment 1 as shown in fig. 1-2, a breakage-proof differential pressure transmitter according to an embodiment of the present invention includes a transmitter 1, a connecting plate 2 is disposed on a top of the transmitter 1, a junction box 3 is disposed on a top of the connecting plate 2, a cable fixing block 4 is disposed in a middle portion of one side of the junction box 3, ear plates 5 are disposed on both sides of the cable fixing block 4, bolt holes 6 are disposed on the ear plates 5, fixing bolts 7 are disposed in the bolt holes 6, the ear plates 5 and the junction box 3 are fixedly connected by the fixing bolts 7, a wire cavity 8 is disposed in a center of the cable fixing block 4 away from the side of the junction box 3, a plurality of first squeezing blocks 9 are disposed on an inner wall of the wire cavity 8, a wire connecting tube 10 is disposed in a center of the wire cavity 8, a wire binding band 14 is disposed in the wire binding band 14, a threading hole 15 is disposed in the wire connecting tube 10, a plurality of second squeezing blocks 11 are disposed, the outer surfaces of the two ends of the wire connecting pipe 10 are respectively provided with a spring 13, and the two sides of the spring 13 are respectively provided with a spring washer 12.

Embodiment 2 on the basis of embodiment 1, as shown in fig. 1-2, a through hole matched with the wire connecting tube 10 is formed on one side of the junction box 3 close to the cable fixing block 4. As can be seen from the above-mentioned design, the design of the through hole is conventional and will not be described in detail.

Example 3 based on example 1, as shown in fig. 2, the first extrusion block 9 and the second extrusion block 11 are both of a hemispherical structure, and the first extrusion block 9 and the second extrusion block 11 are both made of a rubber material. As can be seen from the above design, the material and shape of the first and

second squeezing blocks

9 and 11 are designed to facilitate squeezing and springback between the first and

second squeezing blocks

9 and 11.

Embodiment 4 is based on embodiment 1, as shown in fig. 1 to 2, the number of the second pressing blocks 11 is 10, the number of the first pressing blocks 9 and the number of the springs 13 are 5, the first pressing blocks 9 and the springs 13 are alternately arranged along the circumferential inner wall of the linear cavity 8, and two second pressing blocks 11 correspond to one first pressing block 9. It can be seen from the above design that the first pressing block 9 and the spring 13 operate independently of each other and do not interfere with each other.

Embodiment 5 a disconnection preventing differential pressure transmitter according to claim 4, as shown in fig. 2 based on embodiment 1, wherein the first pressing blocks 9 and the springs 13 are alternately arranged along the circumferential inner wall of the wire chamber 8, and two second pressing blocks 11 correspond to one first pressing block 9.

Embodiment 6 is based on embodiment 1, as shown in fig. 1-2, a spring 13 is an extension spring, spring washers 12 at two ends of the spring 13 are respectively connected and fixed with an outer surface of a wire connecting tube 10 and an outer surface of a wire cavity 8, a through hole matched with the wire connecting tube 10 is arranged at one side of the junction box 3 close to the cable fixing block 4, the first extrusion block 9 and the second extrusion block 11 are both of a hemispherical structure, and the first extrusion block 9 and the second extrusion block 11 are both made of rubber materials. The quantity of second extrusion piece 11 is 10, and first extrusion piece 9 is 5 with the quantity of spring 13, and first extrusion piece 9 sets up with spring 13 along the circumferencial direction inner wall of line chamber 8 is crisscross, and two second extrusion pieces 11 correspond a first extrusion piece 9, and spring 13 is extension spring, and spring washer 12 at spring 13 both ends is connected fixedly with the surface of connection pipe 10 and the surface of line chamber 8 respectively. It can be seen from the above design that the design of the spring washer 12 extends the useful life of the spring 13.

Embodiment 7 on the basis of embodiment 1, as shown in fig. 1-2, a through hole matched with the wire connecting tube 10 is formed in one side of the junction box 3 close to the cable fixing block 4, the first extrusion block 9 and the second extrusion block 11 are both of a hemispherical structure, and the first extrusion block 9 and the second extrusion block 11 are both made of rubber materials. The quantity of second extrusion piece 11 is 10, and first extrusion piece 9 is 5 with the quantity of spring 13, and first extrusion piece 9 sets up with spring 13 along the circumferencial direction inner wall of line chamber 8 is crisscross, and two second extrusion pieces 11 correspond a first extrusion piece 9, and spring 13 is extension spring, and spring washer 12 at spring 13 both ends is connected fixedly with the surface of connection pipe 10 and the surface of line chamber 8 respectively.

Embodiment 8 as shown in fig. 1-2, the anti-break differential pressure transmitter comprises a transmitter 1, a connecting plate 2 is disposed on the top of the transmitter 1, a junction box 3 is disposed on the top of the connecting plate 2, a cable fixing block 4 is disposed in the middle of one side of the junction box 3, ear plates 5 are disposed on both sides of the cable fixing block 4, bolt holes 6 are disposed on the ear plates 5, fixing bolts 7 are disposed in the bolt holes 6, the ear plates 5 are fixedly connected with the junction box 3 by the fixing bolts 7, a wire cavity 8 is disposed in the center of one side of the cable fixing block 4 away from the junction box 3, a plurality of first squeezing blocks 9 are disposed on the inner wall of the wire cavity 8, a connecting pipe 10 is disposed in the center of the wire cavity 8, a wire binding belt 14 is disposed inside the connecting pipe 10, a threading hole 15 is disposed in the wire binding belt 14, a plurality of second squeezing blocks 11 are disposed on the outer surface of the, springs 13 are arranged on the outer surfaces of two ends of the wire connecting pipe 10, and spring washers 12 are arranged on two sides of each spring 13;

one side of the junction box 3, which is close to the cable fixing block 4, is provided with a through hole matched with the junction tube 10, the first extrusion block 9 and the second extrusion block 11 are both of a hemispherical structure, the first extrusion block 9 and the second extrusion block 11 are both made of rubber materials, the number of the second extrusion blocks 11 is 10, the number of the first extrusion blocks 9 and the number of the springs 13 are 5, the first extrusion blocks 9 and the springs 13 are arranged in a staggered manner along the circumferential inner wall of the wire cavity 8, and two second extrusion blocks 11 correspond to a first extrusion block 9, the spring 13 is an extension spring, spring washers 12 at two ends of the spring 13 are respectively connected and fixed with the outer surface of the wire connecting tube 10 and the outer surface of the wire cavity 8, one side of the junction box 3, which is close to the cable fixing block 4, is provided with a through hole matched with the wire connecting tube 10, the first extrusion block 9 and the second extrusion block 11 are both of a hemispherical structure, and the first extrusion block 9 and the second extrusion block 11 are both made of rubber materials. The quantity of second extrusion piece 11 is 10, and first extrusion piece 9 is 5 with the quantity of spring 13, and first extrusion piece 9 sets up with spring 13 along the circumferencial direction inner wall of line chamber 8 is crisscross, and two second extrusion pieces 11 correspond a first extrusion piece 9, and spring 13 is extension spring, and spring washer 12 at spring 13 both ends is connected fixedly with the surface of connection pipe 10 and the surface of line chamber 8 respectively.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In summary, according to the above technical scheme of the present invention, the connecting wire penetrates into the wire connecting tube 10 through the threading hole 15, the connecting wire extrudes the wire tying band 14 at the edge of the threading hole 15 while penetrating, the wire tying band 14 extrudes the outer surface of the connecting wire, so as to achieve a sealing effect, the interaction between the first extrusion block 9 and the second extrusion block 11 enables the connecting wire not to be rigidly extruded with the junction box 3 when swinging, so as to avoid damage to the connecting wire, improve the service life, and the plurality of springs 13 perform telescopic motion to also perform an elastic limiting function.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The anti-breakage differential pressure transmitter is characterized by comprising a transmitter (1), wherein a connecting plate (2) is arranged at the top of the transmitter (1), a junction box (3) is arranged at the top of the connecting plate (2), a cable fixing block (4) is arranged in the middle of one side of the junction box (3), lug plates (5) are arranged on two sides of the cable fixing block (4), bolt holes (6) are formed in the lug plates (5), fixing bolts (7) are arranged in the bolt holes (6), the lug plates (5) are fixedly connected with the junction box (3) through the fixing bolts (7), a wire cavity (8) is arranged at the center of one side, away from the junction box (3), of the cable fixing block (4), a plurality of first extrusion blocks (9) are arranged on the inner wall of the wire cavity (8), and a wiring pipe (10) is arranged at the center of the inner part of the wire cavity (, wire connection pipe (10) inside is equipped with bunch area (14), be equipped with through wires hole (15) in bunch area (14), wire connection pipe (10) outside surface is equipped with a plurality of second extrusion piece (11), second extrusion piece (11) surface with the surface extrusion of first extrusion piece (9) is in the same place, the surface at wire connection pipe (10) both ends all is equipped with spring (13), the both sides of spring (13) all are equipped with spring washer (12).

2. The anti-break differential pressure transmitter according to claim 1, characterized in that a through hole matched with the wiring pipe (10) is arranged on one side of the junction box (3) close to the cable fixing block (4).

3. The transmitter of claim 1, wherein the first extrusion block (9) and the second extrusion block (11) are of a hemispherical structure, and the first extrusion block (9) and the second extrusion block (11) are made of a rubber material.

4. The anti-breakage differential pressure transmitter according to claim 3, characterized in that the number of the second squeezing blocks (11) is 10, and the number of the first squeezing blocks (9) and the number of the springs (13) are 5.

5. The transmitter of claim 4, wherein the first pressing blocks (9) and the springs (13) are arranged alternately along the circumferential inner wall of the wire cavity (8), and two second pressing blocks (11) correspond to one first pressing block (9).

6. The transmitter of claim 1, wherein the spring (13) is an extension spring, and the spring washers (12) at both ends of the spring (13) are respectively connected and fixed with the outer surface of the wire connecting tube (10) and the outer surface of the wire cavity (8).

7. The anti-breakage differential pressure transmitter according to claim 1, wherein a through hole matched with the wiring pipe (10) is formed in one side, close to the cable fixing block (4), of the junction box (3), the first extrusion block (9) and the second extrusion block (11) are of hemispherical structures, and the first extrusion block (9) and the second extrusion block (11) are made of rubber materials.

8. The quantity of second extrusion piece (11) is 10, first extrusion piece (9) with the quantity of spring (13) is 5, first extrusion piece (9) with spring (13) are along the crisscross setting of the circumferencial direction inner wall of line chamber (8), and two second extrusion piece (11) correspond one first extrusion piece (9), spring (13) are extension spring, spring (13) both ends spring packing ring (12) respectively with the surface of junction tube (10) and the surface of line chamber (8) is connected fixedly.

9. The breakage-proof differential pressure transmitter according to claim 1, characterized by comprising a transmitter (1), wherein a connecting plate (2) is arranged at the top of the transmitter (1), a junction box (3) is arranged at the top of the connecting plate (2), a cable fixing block (4) is arranged in the middle of one side of the junction box (3), lug plates (5) are arranged on both sides of the cable fixing block (4), bolt holes (6) are arranged on the lug plates (5), fixing bolts (7) are arranged in the bolt holes (6), the lug plates (5) and the junction box (3) are fixedly connected together by the fixing bolts (7), a wire cavity (8) is arranged at the center of one side of the cable fixing block (4) far away from the junction box (3), a plurality of first extrusion blocks (9) are arranged on the inner wall of the wire cavity (8), and a wiring pipe (10) is arranged at the center of the inside of the wire cavity (8), a wiring harness belt (14) is arranged inside the wiring pipe (10), a threading hole (15) is formed in the wiring harness belt (14), a plurality of second extrusion blocks (11) are arranged on the outer surface of the outer side of the wiring pipe (10), the outer surfaces of the second extrusion blocks (11) are extruded with the outer surface of the first extrusion block (9), springs (13) are arranged on the outer surfaces of two ends of the wiring pipe (10), and spring washers (12) are arranged on two sides of each spring (13);

the wire connection box (3) is provided with a through hole matched with the wire connection pipe (10) at one side close to the cable fixing block (4), the first extrusion block (9) and the second extrusion block (11) are both of a hemispherical structure, the first extrusion block (9) and the second extrusion block (11) are both made of rubber materials, the number of the second extrusion blocks (11) is 10, the number of the first extrusion blocks (9) and the number of the springs (13) are 5, the first extrusion blocks (9) and the springs (13) are arranged in a staggered mode along the inner wall of the wire cavity (8) in the circumferential direction, the two second extrusion blocks (11) correspond to one first extrusion block (9), the springs (13) are extension springs, and the spring gaskets (12) at the two ends of the springs (13) are respectively connected and fixed with the outer surface of the wire connection pipe (10) and the outer surface of the wire cavity (8), one side of the junction box (3) close to the cable fixing block (4) is provided with a through hole matched with the wiring pipe (10), the first extrusion block (9) and the second extrusion block (11) are both of a hemispherical structure, the first extrusion block (9) and the second extrusion block (11) are both made of rubber materials; the number of the second extrusion blocks (11) is 10, the number of the first extrusion blocks (9) and the number of the springs (13) are both 5, the first extrusion blocks (9) and the springs (13) are arranged in a staggered manner along the circumferential inner wall of the wire cavity (8), and two of the second extrusion blocks (11) correspond to one of the first extrusion blocks (9), the spring (13) is an extension spring, and the spring washers (12) at the two ends of the spring (13) are fixedly connected with the outer surface of the wire connecting pipe (10) and the outer surface of the wire cavity (8) respectively.