CN105865581A - Liquid level meter - Google Patents

Abstract

The invention discloses a liquid level meter. The liquid level meter comprises an anti-corrosion pipe, an anti-corrosion floating ball and multiple magnetic reed node modules, wherein all the magnetic reed node modules are sequentially arranged on the inner wall of the anti-corrosion pipe along the axial direction of the anti-corrosion pipe, and line bodies of the magnetic reed node modules are located in the anti-corrosion pipe; a penetrative sleeving hole is formed in the center position of the anti-corrosion floating ball; multiple magnetic strips are embedded in the anti-corrosion floating ball along the circumferential direction of the hole wall of the sleeving hole; the anti-corrosion floating ball is arranged at the periphery of the anti-corrosion pipe in a sleeving way through the sleeving hole. The liquid level meter disclosed by the invention has the advantages of simple and compact structure, low cost, high safety, capability of displaying the water level in real time, corrosion prevention, and false-action and non-action prevention.

Description

level gauge

technical field

The invention mainly relates to the development technology of a liquid level gauge of a salt pond automatic water replenishment device in a valve external cooling system of a converter station, in particular to a liquid level gauge.

Background technique

The valve external cooling system of the converter station is mainly responsible for the cooling task of the internal valve cooling water system. The control malfunction and refusal failure of the external valve water cooling system directly affect the stable operation of the valve internal cooling water system and reduce the reliability of the DC system. At present, the misoperation and refusal of the control of the cold water system outside the valve are mainly caused by the floating ball that controls the water supply. Faults such as floating ball corrosion and frequent node failures can cause the equipment to be flooded after the water supply overflows or the water level is low and the equipment is idling and damaged. Wait for the occurrence of the accident, and need personnel to enter in the airtight pool when carrying out fault treatment, cause the generation of personnel injury accident easily.

There are three brine pools in the external water cooling system of each pole valve in the converter station, which are used to provide saturated brine to the softening unit and purify the cooling water of the converter valve. The brine pool stores a large amount of industrial salt. The external cold water control system controls the replenishment and stop of the brine pool through the floating ball, so that industrial water enters the brine pool to generate saturated brine. As shown in Figure 1, there are three floating balls in the brine pool: when the water level reaches the water level of the floating ball 1, the signal terminal sends a low water level alarm and sends out a water replenishment signal; when the water level reaches the water level of the floating ball 2, The signal end sends a high water level alarm; when the water level reaches the water level of the float 3, the signal end sends a high water level alarm and a signal to stop water replenishment. The failure of the automatic water supply device in the salt pond is mainly due to the corrosion of the floating ball wire, accounting for about 65% of the weight. In addition, the failure of the closed node is also one of the common problems. The failure of the floating ball node will lead to the loss of sensor function, resulting in misoperation or refusal of protection; Due to the simple node design, once a single node fails, the water level sensor will inevitably fail to work normally; the fault handling process is complicated, and the operation items include using large submersible pumps, entering closed pools, connecting temporary power supplies, etc. Go to the salt pool to replace the sensor. If you stay in a closed pool for a long time, there is a risk of personal injury; the float of the water level sensor is made of plastic, which is easily corroded in a high-concentration salt pool. The nodes in the circuit are misconducted, causing the circuit to malfunction; and the disconnection of the floating ball circuit will make the water level signal unable to be transmitted, causing the protection to refuse to operate.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a liquid level gauge with simple and compact structure, low cost, high safety, real-time display of water level, anti-corrosion, and anti-misoperation and refusal to operate.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A liquid level gauge, comprising an anti-corrosion tube, an anti-corrosion floating ball and a plurality of magnetic reed node modules, each magnetic reed node module is sequentially installed on the inner wall of the anti-corrosion tube along the axial direction of the anti-corrosion tube, and each magnetic reed The line bodies of the node modules are all located in the anti-corrosion pipe, and the center of the anti-corrosion floating ball is provided with a through socket hole, and the anti-corrosion floating ball is embedded with a plurality of magnetic strips along the circumferential direction of the socket hole wall , the anti-corrosion floating ball is sleeved on the periphery of the anti-corrosion pipe through its sleeve hole.

As a further improvement of the above technical solution:

The reed node module includes a box body, and the box body is provided with at least two groups of reed switches connected in series, and each reed switch includes at least two reed nodes connected in parallel.

The anti-corrosion pipe is set as a PVC quality pipe, and the anti-corrosion floating ball is set as a PVC quality floating ball.

The upper and lower ends of the anti-corrosion pipe are provided with limit snap rings for preventing the anti-corrosion floating ball from coming out.

The bottom of the anti-corrosion pipe is provided with a sealing structure, and the top of the anti-corrosion pipe is provided with an opening for leading out the wire.

Compared with the prior art, the present invention has the advantages of:

1. The liquid level gauge of the present invention simplifies and integrates the original multiple floating balls into one anti-corrosion floating ball. The anti-corrosion floating ball is always located on the water surface and will not be immersed in water. On the one hand, the overall structure is greatly optimized. The cost is reduced. On the other hand, the anti-corrosion floating ball will not be damaged. The magnetic reed node module and the anti-corrosion floating ball adopt a separate design, which greatly reduces the node failure rate and solves the protection error caused by the node being set in the floating ball. movement and refusal;

2. In the liquid level gauge of the present invention, the line body is located in the anti-corrosion pipe and isolated from water, which can prevent the line body from being corroded;

3. In the liquid level gauge of the present invention, a plurality of reed node modules are arranged, which greatly expands the counting range of the liquid level gauge, and can realize real-time display of the water level;

4. The liquid level gauge of the present invention can set the water level off-line. When the anti-corrosion floating ball is replaced, it only needs to be pulled out for replacement as a whole, and there is no need to drain the pool and let the maintenance personnel enter the pool to deal with the fault, thereby improving the maintenance environment and shortening the maintenance time. , to prevent personal injury.

Description of drawings

Fig. 1 is a schematic structural diagram of a liquid level gauge in the prior art.

Fig. 2 is a structural schematic diagram of the liquid level gauge of the present invention.

Fig. 3 is a front structural schematic diagram of the anti-corrosion floating ball in the liquid level gauge of the present invention.

Fig. 4 is a top view structure diagram of the anti-corrosion floating ball in the liquid level gauge of the present invention.

Fig. 5 is a schematic structural diagram of the reed node module in the liquid level gauge of the present invention.

Each label in the figure means:

1. Anti-corrosion tube; 11. Opening; 2. Anti-corrosion floating ball; 21. Socket hole; 22. Magnetic strip; 3. Magnetic reed node module; 31. Box body; 32. Magnetic reed switch; 321. Magnetic reed node; 4, limit snap ring.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

2 to 5 show an embodiment of the liquid level gauge of the present invention, the liquid level gauge includes an anti-corrosion tube 1, an anti-corrosion float 2 and a plurality of reed node modules 3, each reed node module 3 along the The axial direction of the anti-corrosion pipe 1 is sequentially installed on the inner wall of the anti-corrosion pipe 1, and the line body of each reed node module 3 is located in the anti-corrosion pipe 1, and the center of the anti-corrosion floating ball 2 is provided with a through socket In the hole 21, the anti-corrosion floating ball 2 is embedded with a plurality of magnetic strips 22 along the circumferential direction of the wall of the socket hole 21, and the anti-corrosion floating ball 2 is sleeved on the periphery of the anti-corrosion pipe 1 through the socket hole 21. When in use, just put the liquid level gauge vertically into the pool. During the water replenishment process, the buoyancy of the water will push the anti-corrosion floating ball 2 to rise along the anti-corrosion pipe 1. When the anti-corrosion floating ball 2 reaches the reed node module 3, the magnetic strip 22 in the anti-corrosion floating ball 2 will generate suction to the magnetic reed node module 3 to energize the magnetic reed node module 3, thereby sending a water replenishment, high water level alarm or stop water replenishment signal to the signal terminal. In this structure, the original multiple floating balls are simplified and integrated into one anti-corrosion floating ball 2. The anti-corrosion floating ball 2 is always located on the water surface and will not be immersed in water. On the one hand, the overall structure is greatly optimized and the cost is reduced. On the other hand, the anti-corrosion floating ball 2 will not be damaged. The magnetic reed node module 3 and the anti-corrosion floating ball 2 adopt a separate design, which greatly reduces the node failure rate and solves the protection error caused by the node being set in the floating ball. The problem of moving and refusing to move; the line body is located in the anti-corrosion pipe 1 and is isolated from the water, which can prevent the line body from being corroded; setting multiple magnetic reed node modules 3 greatly expands the counting range of the liquid level gauge, and can realize real-time display of water level The liquid level gauge can set the water level off-line. When replacing the anti-corrosion floating ball 2, it only needs to be pulled out as a whole for replacement, and there is no need to drain the pool and let the maintenance personnel enter the pool to deal with the fault, thereby improving the maintenance environment, shortening the maintenance working hours, and eliminating personal injury.

In this embodiment, the reed node module 3 includes a box body 31 inside which is provided at least two sets of reed switches 32 connected in series, and each reed switch 32 includes at least two reed nodes 321 connected in parallel. In this structure, a multi-parallel and multi-series circuit structure is adopted, so that when a single reed node 321 is damaged, the other reed nodes 321 can work as usual, which can further prevent malfunction and refusal, and improve the reliability of the node .

In this embodiment, the anti-corrosion pipe 1 is set as a PVC pipe, and the anti-corrosion float 2 is set as a PVC float. It is made of PVC material, which has good anti-corrosion, and effectively prevents the problem of protection refusal and misoperation caused by floating ball corrosion or disconnection.

In this embodiment, the upper and lower ends of the anti-corrosion pipe 1 are provided with limit snap rings 4 for preventing the anti-corrosion floating ball 2 from falling out. The limit snap ring 4 can prevent the anti-corrosion floating ball 2 from detaching from the anti-corrosion pipe 1, further improving the reliability and stability of the liquid level gauge.

In this embodiment, the bottom of the anti-corrosion pipe 1 is provided with a sealing structure, and the top of the anti-corrosion pipe 1 is provided with an opening 11 for leading out wires. The opening 11 is convenient for the wire body to be drawn out and connected to an external signal terminal.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. a liquidometer, it is characterized in that: include corrosionproof pipes (1), anticorrosion ball float (2) and multiple magnetic red node module (3), each magnetic red node module (3) is sequentially arranged on the inwall of corrosionproof pipes (1) along the axial direction of corrosionproof pipes (1), and the wire body of each magnetic red node module (3) is respectively positioned in corrosionproof pipes (1), the sleeve joint hole (21) run through is offered in the center of described anticorrosion ball float (2), described anticorrosion ball float (2) is embedded with many magnetic stripes (22) along the circumferential direction of sleeve joint hole (21) hole wall, it is peripheral that described anticorrosion ball float (2) is set in corrosionproof pipes (1) by its sleeve joint hole (21).

Liquidometer the most according to claim 1, it is characterized in that: described magnetic red node module (3) includes box body (31), being provided with the magnetic reed switch (32) that at least two groups are serially connected in described box body (31), each magnetic reed switch (32) all includes the magnetic red node (321) that at least two is parallel with one another.

Liquidometer the most according to claim 2, it is characterised in that: described corrosionproof pipes (1) is set to PVC matter pipe, and described anticorrosion ball float (2) is set to PVC matter ball float.

Liquidometer the most according to any one of claim 1 to 3, it is characterised in that: it is equipped with the limited location snap ring (4) for preventing anticorrosion ball float (2) from deviating from outside the two ends up and down of described corrosionproof pipes (1).

Liquidometer the most according to any one of claim 1 to 3, it is characterised in that: described corrosionproof pipes (1) bottom is set to enclosuring structure, and the top of corrosionproof pipes (1) is provided with the opening (11) drawn for wire body.

Liquidometer the most according to claim 4, it is characterised in that: described corrosionproof pipes (1) bottom is set to enclosuring structure, and the top of corrosionproof pipes (1) is provided with the opening (11) drawn for wire body.