阅读说明：本技术 一种励磁绕组感应模块 (Excitation winding induction module ) 是由 张可 胡廷胜 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种励磁绕组感应模块,包括壳体、励磁绕组和盒盖,盒盖卡设于壳体的上端后两者形成一封闭腔,励磁绕组容纳于封闭腔内,壳体的底部中心设有安装套筒A且安装套筒A的下端面与壳体的下端面平齐设置,盒盖的上端中心设有与安装套筒A彼此套设连接的安装套筒B,壳体的底部匹配测量管设置,壳体的一侧开设有过线孔,感应模块通过过线孔对封闭腔进行整体灌胶以使封闭腔具有密封防水作用,还包括磁轭和磁芯；本发明将励磁线圈、磁芯、磁轭放置于一封闭腔,再通过对封闭腔进行整体灌胶来实现防水,具有结构独立、安装简单方便的优点,能够保证对称安装于测量管两侧的两个励磁绕组产生的匀强磁场与导电介质流向的相互垂直设置。(The invention discloses an excitation winding induction module, which comprises a shell, an excitation winding and a box cover, wherein the box cover is clamped at the upper end of the shell to form a closed cavity, the excitation winding is accommodated in the closed cavity, the bottom center of the shell is provided with a mounting sleeve A, the lower end face of the mounting sleeve A is flush with the lower end face of the shell, the upper end center of the box cover is provided with a mounting sleeve B which is mutually sleeved and connected with the mounting sleeve A, the bottom of the shell is matched with a measuring tube, one side of the shell is provided with a wire passing hole, and the induction module is used for integrally filling glue into the closed cavity through the wire passing hole so that the closed cavity has a sealing and waterproof effect and also comprises a magnet yoke; the invention places the excitation coil, the magnetic core and the magnetic yoke in a closed cavity, and realizes water resistance by integrally encapsulating the closed cavity, has the advantages of independent structure and simple and convenient installation, and can ensure that the uniform magnetic field generated by the two excitation windings symmetrically arranged at the two sides of the measuring tube is perpendicular to the flow direction of the conductive medium.)

1. An excitation winding induction module, characterized by: including casing, excitation winding and lid, the lid card is located both form a closed chamber behind the upper end of casing, excitation winding hold in closed intracavity, the bottom center of casing is equipped with installation sleeve A just installation sleeve A's lower terminal surface with the lower terminal surface parallel and level of casing sets up, the upper end center of lid be equipped with installation sleeve A overlaps each other and establishes the installation sleeve B of connecting, the bottom of casing matches the survey buret setting, the line hole has been seted up to one side of casing, induction module passes through the line pore pair closed chamber carries out whole encapsulating so that closed chamber has sealed waterproof effect.

2. The field winding sensing module of claim 1, wherein: the bottom symmetry of casing is equipped with two spacing pieces, excitation winding just locates the inside wall of casing with between two spacing pieces.

3. The field winding sensing module of claim 1, wherein: the inner side wall of the mounting sleeve B is provided with a circular ring step with a direction facing the mounting sleeve A, and the mounting sleeve A is sleeved on the mounting sleeve B, and the upper end face of the mounting sleeve B is just abutted to the circular ring step.

4. The field winding sensing module of claim 1, wherein: the magnetic yoke is tightly attached to and matched with the inner side face of the box cover and then clamped between the shell and the box cover.

5. The field winding sensing module of claim 4, wherein: the magnet yoke is clamped between the shell and the box cover, and then the two sides of the magnet yoke extend out of the clamping position of the shell and the box cover by at least 5 cm.

6. The field winding sensing module of claim 4, wherein: the magnetic yoke is a silicon steel sheet.

7. The field winding sensing module of claim 4, wherein: the magnetic core is integrally sleeved on the limiting sleeve A and the limiting sleeve B and then clamped between the excitation winding and the box cover.

8. The field winding sensing module of claim 7, wherein: the magnetic core is tightly attached to the bottom of the shell, a plate-shaped structure with concave clamping grooves is arranged at the bottom of the shell, the concave clamping grooves are matched with the arrangement of the excitation winding, and the two sides of the plate-shaped structure are clamped to the upper end of the excitation winding through the concave clamping grooves after the bottom of the shell is arranged.

9. The field winding sensing module of claim 7, wherein: the magnetic core is a silicon steel sheet.

10. The field winding sensing module of claim 1, wherein: the shell and the limiting sleeve A are of an integrally formed structure; the box cover and the limiting sleeve B are of an integrally formed structure.

Technical Field

The invention belongs to the technical field of electromagnetic flow meters, and particularly relates to an excitation winding induction module.

Background

An electromagnetic flowmeter (EMF) is an induction type instrument manufactured according to Faraday's law of electromagnetic induction and used for measuring volume flow of a conductive medium in a pipe, and mainly comprises a flow sensor and a signal transmitter, wherein an excitation coil on the flow sensor receives excitation current transmitted by the signal transmitter to generate a magnetic field, a conductive medium flowing in the measuring pipe is equivalent to a conductor, the conductor cuts magnetic lines of force to generate an induced electromotive force signal, and the induced electromotive force signal in direct proportion to the flow velocity of the conductive medium to be measured is converted into an intuitive flow signal by the signal transmitter to be output, so that the flow measurement of the conductive medium in the measuring pipe is completed.

As shown in fig. 11, the field coils 8 of the prior art are symmetrically and directly mounted on both sides of the measuring pipe 13 in pairs through a plurality of fixing members 12 to complete the generation of the magnetic field, and in order to achieve accurate measurement, the magnetic field, the conductive medium flow direction and the induced electromotive force detection electrode are required to be perpendicular to each other, but there is no positioning or limiting measure between the fixing members 12 and the field coils 8 of the prior art, the symmetric mounting of the two field coils 8 is mainly grasped by a human, and it is difficult to ensure the perpendicular direction of the magnetic field and the conductive medium flow direction; meanwhile, after the two excitation coils 8 in the prior art are symmetrically installed, in order to prevent water and reduce magnetic leakage and external signal interference, a shielding cover is generally arranged outside the excitation coils 8 or a housing of the flow sensor is directly manufactured into the shielding cover, and then the shielding cover and the measuring pipe are integrally welded and fixed to achieve the waterproof and shielding effects, so that the problems of complicated welding work, limited design of the housing of the flow sensor and limited application scene exist; in order to solve the above problems, it is necessary to develop an excitation winding induction module.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides the excitation winding induction module which is independent in structure and simple and convenient to install, and can ensure that the magnetic fields generated by two excitation windings symmetrically installed on two sides of the measuring pipe are perpendicular to the flow direction of a conducting medium.

The purpose of the invention is realized as follows: the utility model provides an excitation winding response module, includes casing, excitation winding and lid, the lid card is located both form a closed chamber behind the upper end of casing, excitation winding hold in closed intracavity, the bottom center of casing is equipped with installation sleeve A just installation sleeve A's lower terminal surface with the lower terminal surface parallel and level of casing sets up, the upper end center of lid be equipped with installation sleeve A overlaps each other and establishes the installation sleeve B of connecting, the bottom of casing matches the survey buret setting, the line hole has been seted up to one side of casing, response module passes through the line pore pair closed chamber carries out whole encapsulating so that the closed chamber has sealed waterproof effect.

Preferably, the bottom of the shell is symmetrically provided with two limiting pieces, and the excitation winding is just clamped between the inner side wall of the shell and the two limiting pieces.

Preferably, the inner side wall of the mounting sleeve B is provided with a circular step towards which the mounting sleeve A is arranged, and the mounting sleeve A is sleeved on the mounting sleeve B, and the upper end face of the mounting sleeve B is just abutted to the circular step.

Preferably, the magnetic yoke is tightly attached to and matched with the inner side face of the box cover and then clamped between the shell and the box cover.

Further preferably, the magnet yoke is clamped between the shell and the box cover, and then the two sides of the magnet yoke extend out of the clamping position of the shell and the box cover by at least 5 cm.

Further preferably, the magnetic yoke is a silicon steel sheet.

Further preferably, the magnetic core is integrally sleeved on the limiting sleeve A and the limiting sleeve B and then clamped between the excitation winding and the box cover.

Further preferably, the magnetic core is a plate-shaped structure with the bottom tightly attached to the bottom of the shell and concave clamping grooves formed in two sides, the concave clamping grooves are matched with the arrangement of the excitation winding, and the two sides of the plate-shaped structure are clamped at the upper end of the excitation winding through the concave clamping grooves after the plate-shaped structure is tightly attached to the bottom of the shell.

Still more preferably, the magnetic core is a silicon steel sheet.

Preferably, the shell and the limiting sleeve A are of an integrally formed structure; the box cover and the limiting sleeve B are of an integrally formed structure.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

(1) according to the invention, the shell and the box cover form a relative closed cavity, and the closed cavity is subjected to integral glue filling to achieve the sealing and waterproof effects on special parts such as the excitation winding in the closed cavity, so that the shielding cover arranged outside is not relied on, the problems of limited design and limited application scene of the shell of the flow sensor caused by the shielding cover are solved, the effect of the shell is weakened, the shell is even not needed, meanwhile, the excitation system becomes an independent module, welding is not needed, and the installation is very simple and convenient;

(2) the radian of the bottom of the shell and the radian of the measuring tube are matched with each other, the excitation systems consisting of the two excitation winding induction modules can be easily and symmetrically arranged on the two sides of the measuring tube only through the installation channel provided by the installation sleeve, and the mutual vertical arrangement of the magnetic fields generated by the two excitation windings and the flow direction of the conductive medium is easily ensured due to the limiting action of the radians, so that the problem that the mutual vertical arrangement of the magnetic fields and the flow direction of the conductive medium is difficultly ensured by mainly depending on manual control in the prior art is solved;

in summary, the invention has the advantages of independent structure and simple and convenient installation, and can ensure that the magnetic fields generated by the two excitation windings symmetrically arranged at the two sides of the measuring tube are perpendicular to the flow direction of the conductive medium.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic front view of the present invention.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a side view schematic of the present invention.

Fig. 5 is a schematic view of the inner perspective structure of the present invention with the cover and yoke removed.

Fig. 6 is a schematic perspective view of the housing of the present invention.

Fig. 7 is a perspective view of the cap of the present invention.

Fig. 8 is a perspective view of the yoke according to the present invention.

Fig. 9 is a schematic perspective view of the magnetic core of the present invention.

Fig. 10 is a perspective view of the components of the present invention prior to assembly.

Fig. 11 is a diagram showing a prior art.

In the figure: 1. casing 2, lid 3, yoke 4, magnetic core 5, spacing piece 6, installation sleeve A7, cross line hole 8, excitation coil 9, ring step 10, installation sleeve B11, concave draw-in groove 12, fastener 13, survey buret.

Detailed Description

The technical scheme of the invention is further specifically described below with reference to the accompanying drawings.

As shown in fig. 1, 2, 3, 4, 6, 7, 8, 9 and 10, the present invention provides an excitation winding induction module, which includes a housing 1, an excitation winding 8 and a box cover 2, wherein the box cover 2 is clamped at the upper end of the housing 1 to form a closed cavity, and the excitation winding 8 is accommodated in the closed cavity, so that the excitation winding 8 and other special components are sealed and waterproof in an integral glue filling manner.

The bottom center of casing 1 is equipped with installation sleeve A6 and the lower terminal surface of installation sleeve A6 and the lower terminal surface parallel and level setting of casing 1, and the upper end center of lid 1 is equipped with the installation sleeve B10 of establishing each other with installation sleeve A6 and being connected. Specifically, the mounting sleeves a6 and B10 are sleeved and connected to provide a mounting channel for mounting the sensor module of the present invention on the measurement pipe 13, specifically, a screw is inserted into the mounting channel and the sensor module is fixedly mounted on the measurement pipe by nuts and washers at the rear two sides. Particularly, the sleeving connection of the installation sleeve A6 and the installation sleeve B10 is convenient for subsequent sealing and waterproof treatment of special parts such as the excitation winding 8 and the like in an integral glue filling mode, and glue leakage is prevented. Specifically, the lower end face of the mounting sleeve a6 is flush with the lower end face of the housing 1, so that the sensor module can be mounted on the measuring tube more closely and effectively, and the magnetic field can act on the conductive medium in the measuring tube more closely and effectively.

Casing 1's bottom matches and surveys buret setting, and casing 1's bottom has the radian setting the same with surveying buret 13 promptly, and both laminating more closely coincide after the installation, make the installation of response module become simple and convenient, also make the response module install easily and target in place and guarantee that the installation targets in place to make the magnetic field of two excitation winding 8 productions of symmetrical installation in surveying buret 13 and survey the mutually perpendicular of the medium flow direction of leading in the buret 13, guarantee measurement accuracy.

One side of the shell 1 is provided with a wire passing hole 7, and the induction module provided by the invention integrally injects glue into a closed cavity formed by the shell 1 and the box cover 2 through the wire passing hole 7 so as to enable the closed cavity to have a sealing and waterproof effect, so that special parts such as an excitation winding 8 in the closed cavity meet the technical application requirements of a use scene, and can normally and stably work for a long time.

Preferably, the bottom symmetry of casing 1 is equipped with two spacing pieces 5, and excitation winding 8 just blocks between casing 1's inside wall and two spacing pieces 5, makes things convenient for chucking excitation winding 8, prevents that excitation winding 8 from rocking at will, influences measurement accuracy.

Preferably, the inner side wall of the mounting sleeve B10 has an annular step 9 arranged toward the mounting sleeve a6, and the mounting sleeve a6 is sleeved in the mounting sleeve B10, and the upper end surface of the mounting sleeve a is just abutted to the annular step 9. Particularly, installation sleeve 8 just butts ring step 9 and sets up and can further prevent to leak and glue, guarantees the water-proof effects of whole encapsulating.