CN209014068U - A kind of Multi probe flow switch measuring rod and heat type flow quantity switch - Google Patents

Abstract

The utility model discloses a kind of Multi probe flow switch measuring rods and heat type flow quantity to switch, including multiple probe assemblies, each probe assembly includes probe socket and the inconsistent probe of two length, the inconsistent probe of described two length is mounted on probe socket, several holes are symmetrically arranged on the probe socket, the concentric connection of multiple probe assemblies is realized in the hole that probe support pipe passes through on probe socket.Multiple probes are mounted on inside the same measuring rod by the utility model, have not only been capable of measuring the flow velocity of multiple points under this section, but also can reduce the space hold to this section.

Description

A kind of Multi probe flow switch measuring rod and heat type flow quantity switch

Technical field

The utility model relates to field of measuring technique, more particularly to a kind of Multi probe flow switch measuring rod.

Background technique

Heat type flow quantity switch is the principle design that difference is generated using probe temperature variation.It is sensed in probe internally provided fever Device and thermal sensor, and and media contact.When heat type flow quantity switchs work, fever sensor issues constant heat, works as pipe When not having media flow in road, the heat that thermal sensor receives is a steady state value, when there is media flow, sensible heat sensing Heat received by device will change with the change in flow of medium, this temperature signal is converted to electric signal by thermal sensor, Flow rate measurements and flow rate setpoint are compared judgement and carry out switch output by the measurement for realizing flow velocity.

In industrial environment, big pipeline, particularly pipeline corner air turbulence will affect the true stream in measurement pipeline Speed, it is therefore desirable to which a kind of equipment is accurately measured in the case where air turbulence.Under normal conditions, it can be inserted into such position More measuring probes measure, and have reached the accurate of measured value.But it is inserted into excessive measuring probe, this larger section can be occupied Under space, influence the flow velocity of pipeline internal medium, and erroneous for installation, larger burden will also result in duct wall.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a kind of Multi probe flow switch measuring rod, utilizes With the flow velocity for measuring multiple points under section, to calculate true flow velocity in pipeline.Multiple probes are mounted in the same measuring rod Portion had not only been capable of measuring true flow velocity under this section, but also can reduce the space hold to this section.

A kind of Multi probe flow switch measuring rod, including multiple probe assemblies, each probe assembly include probe socket and two The inconsistent probe of a length, the inconsistent probe of described two length are mounted on probe socket, symmetrically set on the probe socket Several holes are equipped with, the concentric connection of multiple probe assemblies is realized in the hole that probe support pipe passes through on probe socket.

Further, the probe socket is made of boss, platform, and probe support pipe is provided through on the platform Hole, the platform middle part are provided with boss, the boss and platform for the cylindrical structure of concentric, in the boss and platform Portion is provided with the hole that short probe and long probe is respectively welded.

Further, the probe support pipe is stainless steel capillary, is provided on the stainless steel capillary for visiting The cable-through hole that the cable of head assembly passes through, stainless steel capillary are interior as probe wiring path.

Further, the corresponding probe support pipe of the last one probe assembly in the multiple probe assembly welds In the welding plate of bottom.

Further, the cable-through hole between the probe support pipe between adjacent probes component is opposite two-by-two；

The cable-through hole between probe support pipe between the last one probe assembly and bottom welding plate is positioned opposite two-by-two.

Further, the integral structure that multiple probe assemblies, probe support pipe and bottom welding plate are constituted is sleeved on detection In device protecting tube；

The detector protecting tube is provided with probe cable output port, and the cable of the probe assembly passes through probe cable Delivery outlet is drawn.

Disclosed herein as well is a kind of heat type flow quantity switches, including above-mentioned Multi probe flow switch measuring rod.

Compared with prior art, the utility model has the beneficial effects that

Multiple probes are mounted on inside the same measuring rod by the utility model, have both been capable of measuring the stream of multiple points under this section Speed, and the space hold to this section can be reduced.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.

Fig. 1 is the application probe assembly structure schematic elevation view；

Fig. 2 is the application probe assembly structure three-dimensional schematic diagram；

Fig. 3 is the application probe welding the first cross-sectional view of composite structure；

Fig. 4 is the application probe welding the second cross-sectional view of composite structure；

Fig. 5 is the application probe welding composite structure schematic three dimensional views；

Fig. 6 is the application overall structure cross-sectional view；

Fig. 7 is the application overall structure three dimensional structure diagram；

In figure, 1, short probe, 2, long probe, 3, boss, 4, platform, 5, probe assembly, 6, probe support pipe, 7, probe walks Thread path, 8, probe cable output port, 9, cable-through hole, 10, bottom welding plate, 11, probe welding combination, 12, detector protecting tube, 13, circular hole.

Specific embodiment

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

In a kind of examples of implementation of the application, a kind of Multi probe flow switch measuring rod, including several probes are disclosed Component, several probe support pipes, several probe support pipes by several probe assemblies carry out it is concentric be fixedly connected, it is several A probe support pipe is welded on composition probe welding in bottom welding plate 10 and combines 11, and the outer detector that is provided with of probe welding combination is prevented Pillar 12 constitutes Multi probe flow switch measuring rod.

In this embodiment example, the quantity of probe assembly is 3, and the structure of each probe assembly is as shown in Figure 1, 2, including short Probe 1, long probe 2, short probe use PT20, and long probe uses PT300, and boss 3, platform 4, it is long that probe leading-out terminal reserves cable Degree is 1 meter.Boss, platform constitute probe socket, and the circular hole 13 of probe support pipe is provided through on platform, works as probe support certainly When pipe is square tube, circular hole herein also accordingly replaces with rectangular, if being provided with boss in the middle part of platform, boss and platform are concentric Cylindrical structure, be provided with the hole that short probe and long probe is respectively welded in the middle part of boss and platform.

In the specific implementation, PT20 and PT300 is temperature sensor, and short probe is heating device, and long probe is temperature-sensitive Device calculates the variation of flow according to rate temperature change, and short probe and the long tail end popped one's head in have three cables respectively, this Place is two groups of mutually independent three cables, from the probe wiring path 7 of 9 penetrating probe support tube of cable-through hole, after summarizing together It is drawn from probe cable output port 8, is connected to corresponding transmitter devices.

Probe welding composite structure is provided with 4 circular holes, circle as shown in Fig. 3,4,5 on the platform on each probe assembly Hole is used in probe support pipe 6, this embodiment example, and probe support pipe uses stainless steel capillary.

Short probe and long probe are welded on probe socket by Laser Welding, are constituted after the completion of length probe and probe socket welding Probe assembly 5, this embodiment example are the typical case of three probe assemblies, and probe assembly as needed can also be with 456 It is a ... etc., it is to be connected by probe support pipe between probe assembly, probe support pipe is internally hollow, the inside What is walked is the cable of probe.

Using 12 outer diameter 4mm, 3 probes are guaranteed that coaxial core welds by the stainless steel capillary of wall thickness 0.8mm. Every stainless steel tube, length can be adjusted according to the distance of measured point.

It is supported between every two probe assembly using 4 capillaries, between the last one probe assembly and bottom welding plate It is using 4 capillaries, having altogether in this way is exactly 12 capillaries, is in welding between capillary and probe assembly.

Stainless steel capillary offers cable-through hole, and probe cable is penetrated from cable-through hole, when leading-out terminal, welding, protects It is opposite two-by-two to demonstrate,prove cable-through hole.It is unified from other side outlet after the cable-through hole of the cable insertion stainless steel capillary of probe.

After the completion of probe welding composite structure, detector protecting tube, detection are housed in probe welding composite structure outer cover One end of device protecting tube is provided with probe cable output port, and detector protecting tube is divided into two parts, and a part is for being set with probe For cable output of popping one's head in, two parts are that diameter differs for welding composite structure, a part.

Shown in Figure 6, left part diameter is small, and the small part of right part diameter major diameter is for fixed entire spy The cable part of head rod, the big part of diameter are the measurement parts of probe rod.

As shown with 7, probe is welded combination to be inserted into detector protecting tube, and probe cable is exported from probe cable Mouth is pierced by.Complete the assembling of Multi probe measuring rod.

In another examples of implementation of the application, heat type flow quantity switch includes above-mentioned Multi probe flow switch measuring rod, is completed Measure the flow velocity of multiple points under section.

The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.

Claims (8)

1. a kind of Multi probe flow switch measuring rod, characterized in that including multiple probe assemblies, each probe assembly includes probe Seat and the inconsistent probe of two length, the inconsistent probe of described two length is mounted on probe socket, on the probe socket Several holes are symmetrically arranged with, the concentric connection of multiple probe assemblies is realized in the hole that probe support pipe passes through on probe socket.

2. a kind of Multi probe flow switch measuring rod as described in claim 1, characterized in that the probe socket is by boss, flat Platform is constituted, and the hole of probe support pipe is provided through on the platform, is provided with boss in the middle part of the platform, the boss and flat Platform is the cylindrical structure of concentric, and the hole that short probe and long probe is respectively welded is provided in the middle part of the boss and platform.

3. a kind of Multi probe flow switch measuring rod as described in claim 1, characterized in that the probe support pipe is stainless Steel wool tubule is provided with the cable-through hole passed through for the cable of probe assembly, stainless steel capillary on the stainless steel capillary It is interior to be used as probe wiring path.

4. a kind of Multi probe flow switch measuring rod as claimed in claim 3, characterized in that in the multiple probe assembly The corresponding probe support Guan Jun of the last one probe assembly is welded in the welding plate of bottom.

5. a kind of Multi probe flow switch measuring rod as claimed in claim 4, characterized in that the spy between adjacent probes component Cable-through hole between head support tube is opposite two-by-two；

The cable-through hole between probe support pipe between the last one probe assembly and bottom welding plate is positioned opposite two-by-two.

6. a kind of Multi probe flow switch measuring rod as claimed in claim 4, characterized in that multiple probe assemblies, probe branch The integral structure that stay tube and bottom welding plate are constituted is sleeved in detector protecting tube.

7. a kind of Multi probe flow switch measuring rod as claimed in claim 6, characterized in that the detector protecting tube setting There is probe cable output port, the cable of the probe assembly passes through probe cable output port and draws.

8. a kind of heat type flow quantity switch, characterized in that including a kind of Multi probe flow switch survey as claimed in claim 1 to 7 Gauge rod.