JP3112391U - Analysis equipment - Google Patents

Abstract

【Task】
The liquid level sensor 3 disposed in the vicinity of the drain hole 2 of the leak tray 1 can reliably detect the presence of the liquid.
[Solution]
The leak tray 1 has a drain hole 2 on the bottom surface, and a liquid level sensor 3 is disposed in the vicinity of the drain hole 2. Around the drain hole 2, a raised portion 5 is formed integrally with the container so as to block the liquid to be stored, and the side surface of the raised portion 5 is inclined.
Since the raised portion 5 is formed integrally with the container, it does not come off unexpectedly due to vibration or external force. Further, since the side surface of the raised portion 5 is inclined, even when the liquid is stored, the liquid is prevented from being separated from the liquid level sensor 3 disposed in the vicinity of the raised portion 5 due to surface tension or the like, The presence of liquid can be reliably detected.
[Selection] Figure 1

Description

  The present invention relates to an analyzer that contains a leak tray that contains liquid leaked from an analytical instrument and drains from a drain hole provided in the lower surface in the direction of gravity, and in particular, includes a liquid detector that detects the presence or absence of leaked liquid. It is related with the analyzer which consists of. Further, the present invention can be applied to various apparatuses including a leak tray in addition to the analysis apparatus.

  For example, high-performance liquid chromatography is an analyzer that separates target substances by injecting a solution into tubes, columns, and detectors using a high-pressure pump. In the unlikely event that a liquid leaks due to a cause such as the above, other components may be wetted by the leaked liquid, rust may be generated, electrical circuits may be short-circuited, leakage, corrosion, or damage to the installation site such as work desks or floors. A leak tray is provided for receiving leaked liquid in case of liquid leak.

  The leak tray has a drainage hole on the lower surface in the gravity direction for receiving liquid and draining to a predetermined drainage channel. Since there is a need to deal with liquid leakage (abnormality) from the apparatus, a liquid detector is generally provided for detecting that the liquid leaked from the apparatus is stored in the leak tray. In many cases, the liquid detector is provided in the middle of the drainage channel (for example, Patent Document 1) or in the vicinity of the drainage hole.

  FIG. 2 shows a configuration of a conventional leak tray of a type in which a liquid detector is provided in the vicinity of the drain hole. A liquid level sensor (liquid detector) 3 for detecting liquid leakage (abnormality) from the apparatus is provided near the drain hole 2. If the liquid received in the leak tray 1 immediately flows out into the drain hole 2, the liquid level sensor 3 does not operate and the liquid leak abnormality cannot be detected. Therefore, as shown in FIG. The liquid level sensor 3 is easily operated by providing a certain liquid depth.

Japanese Utility Model Publication No. 6-69798

  However, even if the cap 4 is provided, when liquid actually enters, the liquid surface is curved due to surface tension or the like as shown in FIG. 4, and there is liquid in the leak tray due to liquid leakage or the like. However, there is a problem that the liquid level sensor 3 does not operate. Further, since the cap 4 is a separate member from the container 1, it may be unintentionally detached due to vibration or external force, and in this case, the liquid level sensor 3 cannot be operated reliably.

The present invention has been made in view of such circumstances, and provides an analyzer equipped with a leak tray that can reliably operate the liquid level sensor 3 disposed in the vicinity of the drain hole 2. is there.

  In order to achieve the above object, an analyzer according to the present invention is an analyzer having a leak tray having a drain hole on the lower surface, and the leak tray has a drain tray around the drain hole. A raised portion formed so as to dam the liquid to be stored and formed with an inclined side surface, and a liquid detector for detecting the raised liquid along the inclined side surface of the raised portion; It is characterized by.

Since the side surface of the raised portion of the leak tray is inclined, the liquid is prevented from moving away from the liquid detector disposed in the vicinity of the raised portion even when the liquid is stored. It is possible to reliably detect the presence of.

  Hereinafter, an embodiment in which this device is applied to a leak tray for liquid chromatography will be described with reference to FIG.

  The leak tray 1 in FIG. 1 corresponds to the liquid container in the present invention, and is disposed below the gravitational direction of a device that handles fluid outside the figure, such as a liquid chromatography device or a particle size distribution measuring device. In order to prevent the damage caused by the leaked liquid from spreading when the liquid leaks, the leaked liquid is received and led to a predetermined drainage channel from the drainage hole provided on the bottom surface. The depth and width of the leak tray 1 are appropriately selected according to the application location so that the leaked liquid can be received. The material is also a material that does not corrode due to the contained liquid, and is appropriately selected according to the use environment.

  By the way, in the vicinity of the drain hole 2, a liquid sensor 3 serving as a liquid detector for detecting whether or not there is liquid in the leak tray 1, that is, whether or not an abnormal situation such as liquid leakage from the apparatus has occurred is arranged. It is installed. The liquid sensor 3 may be a liquid sensor using a public thermistor. It can be appropriately changed according to the type of liquid to be detected, the installation environment, and the like.

  Around the drain hole 2, a raised portion 5 is formed for blocking the liquid stored in the leak tray 1 from immediately flowing into the drain hole 2. If the raised portion 5 is formed integrally with the leak tray 1, it is desirable that it does not come off unexpectedly due to vibration, external force or the like, but it does not prevent the same shape from being realized by bonding another member such as a cap. What is necessary is just to set suitably the protruding height of the protruding part 5 so that the liquid depth which can detect reliably with the liquid sensor 3 which adjoins can be ensured. Moreover, it is desirable that the upper portion of the raised portion 5 has a curved shape. It is desirable to drain into the drainage hole 2 without stagnation after the top of the raised portion 5 has been submerged. Therefore, the drainage efficiency can be improved by giving the upper portion a curvature.

  Furthermore, in the configuration of the present invention, the side surface of the raised portion 5 is inclined to the widest end. When liquid enters the leak tray 1, the liquid surface is raised along the inclined side surface of the raised portion 5, and the liquid surface is not separated from the liquid sensor 3 as shown in FIG. can do. The inclination angle is appropriately determined depending on the use situation such as the position of the liquid sensor 3, the viscosity of the stored liquid, and the surface tension resulting from the surface material of the leak tray 1.

Furthermore, it is desirable to add a known alarm or error display mechanism for notifying an operator of an abnormality of the apparatus as a result of detecting the liquid leaked from the apparatus to the leak tray 1.

It is a figure which shows the structure Example of the drain hole vicinity of a leak tray. It is a figure which shows the structural Example of the drain hole vicinity of the conventional leak tray. It is a figure which shows the structural Example of the drain hole vicinity of the conventional leak tray. It is a figure which shows the structural Example of the drain hole vicinity of the conventional leak tray.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Leak tray 2 ... Drain hole 3 ... Liquid detector (liquid level sensor)
4 ... Cap 5 ... Raised part

Claims (1)

An analyzer comprising a leak tray having a drain hole on the lower surface,
Around the drain hole of the leak tray, it is provided with a raised portion formed so as to dam up the liquid contained in the leak tray and inclined at the side surface,
An analyzer comprising: a liquid detector that detects the liquid raised along the inclined side surface of the raised portion.

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