阅读说明：本技术 一种采用全焊接结构的液位变送器 (Liquid level transmitter adopting all-welded structure ) 是由 伍华林 宗兴军 金金 于 2018-08-14 设计创作，主要内容包括：本发明公开了一种采用全焊接结构的液位变送器,属于敏感元器件技术领域。本发明包括防护帽,进压头,芯片,支架,放大电路板,壳体,后壳体,密封垫圈,液位导气电缆,所述进压头与所述芯体焊接连接,所述进压头与所述壳体焊接连接,所述壳体与所述后壳体焊接连接,所述壳体内部灌胶,所述液位导气电缆断面封胶。相对于采用螺纹连接的液位变送器,本发明解决如下技术问题：①全焊接结构提升壳体的密封性能；②壳体内部灌胶,液位导气电缆断面封胶,进一步提升产品的密封性能,即使有水汽进入壳体内部,灌胶/封胶阻碍水汽与芯体、放大电路板接触,保护芯体、放大电路板。(The invention discloses a liquid level transmitter adopting an all-welded structure, which belongs to the technical field of sensitive components and parts and comprises a protective cap, a pressure inlet head, a chip, a support, an amplifying circuit board, a shell, a rear shell, a sealing washer and a liquid level air guide cable, wherein the pressure inlet head is welded with a core body, the pressure inlet head is welded with the shell, the shell is welded with the rear shell, glue is poured inside the shell, and the section of the liquid level air guide cable is sealed.)

1. The utility model provides an adopt full welded structure's liquid level changer, includes helmet (1), advances pressure head (2), core (3), support (4), enlargies circuit board (5), casing (6), back casing (7), seal ring (8), liquid level air guide cable (9), helmet (1) with advance pressure head (2) threaded connection, enlarge circuit board (5) and be fixed in on support (4), liquid level air guide cable (9) are fixed in on back casing (7) through seal ring (8), its characterized in that: advance pressure head (2) with core (3) welded connection, advance pressure head (2) with casing (6) welded connection, casing (6) with back casing (7) welded connection.

2. The liquid level transmitter with an all-welded structure according to claim 1, wherein the housing (6) is internally filled with glue (10).

3. The liquid level transmitter with the all-welded structure as claimed in claim 1, wherein the section of the liquid level gas guide cable (9) is sealed by an adhesive (11).

4. The liquid level transmitter with an all-welded structure according to claim 2 or 3, wherein the glue (10) is silica gel and the glue (11) is epoxy glue.

Technical Field

The invention relates to the technical field of sensitive components, in particular to a liquid level transmitter adopting an all-welded structure.

Background

The existing liquid level transmitter package generally adopts a threaded connection structure, a core body is connected with a shell through a compression ring and threads, the core body is sealed with the shell through an O-shaped ring, and a pressure inlet head and a rear shell are connected with the shell through threads; by adopting the structure, the sealing performance of the shell is poor, the risk of water vapor leakage exists, and the water vapor causes the core body to be damaged and the circuit board to be uninsulated, so that the product fails. To address this problem, my company developed a level transmitter that employed an all-welded construction.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the liquid level transmitter adopting the all-welded structure, wherein the core body is welded with the shell, the pressure inlet head, the rear shell and the shell are welded, glue is poured into the shell, and the section of the liquid level air guide cable is sealed with glue.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an adopt full welded structure's liquid level changer, includes the helmet, advances pressure head, core, support, enlargies circuit board, casing, back casing, seal ring, liquid level air guide cable, the helmet with advance pressure head threaded connection, it is fixed in to enlarge the circuit board on the support, liquid level air guide cable is fixed in on the back casing through seal ring, advance the pressure head with core welded connection, advance the pressure head with casing welded connection, the casing with back casing welded connection.

Preferably, glue is filled inside the shell.

Preferably, the section of the liquid level air guide cable is sealed.

Preferably, the glue is silica gel or epoxy resin glue.

Compared with the prior art, the all-welded structure of the cable has the beneficial effects that the ① all-welded structure improves the sealing performance of the shell, the sealant is poured into the ② shell, the liquid level air guide cable section is sealed, the sealing performance of the product is further improved, and even if water vapor enters the shell, the sealant/the sealant blocks the water vapor from contacting the core body and the amplifying circuit board, so that the core body and the amplifying circuit board are protected.

Drawings

FIG. 1 is a schematic diagram of a liquid level transmitter employing an all-welded structure according to the present invention.

In the figure: 1-protective cap, 2-pressure inlet head, 3-core body, 4-support, 5-amplifying circuit board, 6-shell, 7-rear shell, 8-sealing washer, 9-liquid level gas guide cable, 10-silica gel and 11-epoxy resin adhesive.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, a liquid level transmitter adopting an all-welded structure comprises a protective cap (1), a pressure head (2), a core (3), a support (4), an amplifying circuit board (5), a shell (6), a rear shell (7), a sealing washer (8) and a liquid level air guide cable (9), wherein the protective cap (1) is in threaded connection with the pressure head (2), the amplifying circuit board (5) is fixed on the support (4), the liquid level air guide cable (9) is fixed on the rear shell (7) through the sealing washer (8), the pressure head (2) is in welded connection with the core (3), the pressure head (2) is in welded connection with the shell (6), and the shell (6) is in welded connection with the rear shell (7).

The shell (6) is preferably internally filled with glue (10).

The liquid level air guide cable (9) is preferably section sealing glue (11).

The glue (10) is preferably silica gel, and the glue (11) is preferably epoxy resin glue.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.