CN212718224U

CN212718224U - Online chemical instrumentation water sample pressure limiting device of power plant

Info

Publication number: CN212718224U
Application number: CN202021616862.4U
Authority: CN
Inventors: 朱红星
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-03-16
Anticipated expiration: 2030-08-06

Abstract

The utility model relates to a pressure limiting device technical field specifically is an online chemical instrumentation water sample pressure limiting device of power plant, including online chemical instrumentation, first connecting tube, pipe joint, second connecting tube, third connecting tube and pressure release pipeline, the first connecting tube of one side fixedly connected with of online chemical instrumentation, first connecting tube keep away from the one end of online chemical instrumentation and install the pipe joint. The utility model has the advantages that: this online chemical instrumentation water sample pressure limiting device of power plant, through setting up the pressure limiting mechanism, the one end at this lateral conduit of third connecting tube is installed to the pressure limiting mechanism, the piston head by the expanding spring extrusion is located the inside of third connecting tube, when the inside pressure of third connecting tube is stronger, the device of automatic pressure release can be regarded as to the pressure limiting mechanism, need not to report to the police and wait for the staff to adjust, the pressure release can be adjusted automatically, it is comparatively convenient to use, be favorable to saving the labour.

Description

Online chemical instrumentation water sample pressure limiting device of power plant

Technical Field

The utility model relates to a pressure limiting device technical field, especially an online chemical instrumentation water sample pressure limiting device of power plant.

Background

The online chemical instrumentation of power plant requires highly to sample water pressure upper limit, because vapour water sampling pressure relief device is unstable, and the fluctuation is very big, and too high pressure can cause the instrument to damage, and pressure crosses lowly can cause the instrument to measure inaccurately, only suitable water sample pressure can ensure that online chemical instrumentation can real-time accurate measurement water quality data. At present, an online chemical instrument does not have a direct pressure limiting device for a water sample, when the pressure of the measured water sample is unstable, the instrument measurement can be made mistakes or damaged, and the requirements of the online chemical instrument cannot be met.

Although the online chemical instrument water sample pressure limiting device for the power plant disclosed in the chinese patent CN207730751U can ensure that the online chemical instrument water sample can meet the requirement of the chemical instrument on the water pressure, and ensure the measurement is accurate and the instrument is not damaged, the online chemical instrument water sample pressure limiting device for the power plant has the following disadvantages in the specific use process:

the pressure limiting valve is provided with a pressure detection switch, the pressure detection switch is connected to an on-line chemical instrument alarm module through a signal line in a feedback mode, the alarm module can only give an alarm and needs workers to come to adjust, if the workers handle the pressure later, the pressure is high, the pressure is easy to damage, and the pressure limiting valve is not convenient to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide an online chemical instrumentation water sample pressure limiting device of power plant.

The purpose of the utility model is realized through the following technical scheme: a water sample pressure limiting device for an online chemical instrument of a power plant comprises the online chemical instrument, a first connecting pipeline, a pipeline joint, a second connecting pipeline, a third connecting pipeline and a pressure relief pipeline, wherein the first connecting pipeline is fixedly connected to one side of the online chemical instrument;

the pressure limiting mechanism comprises a connecting pipeline, a through hole, a movable rod, a piston head, a limiting disc and a telescopic spring, the through hole is formed in the connecting pipeline, the movable rod is movably connected to the inside of the connecting pipeline through the through hole, the piston head is fixedly connected to one end of the movable rod and located in the connecting pipeline, the movable rod is far away from the limiting disc, the telescopic spring is sleeved on the outer surface of the movable rod, and the telescopic spring is located in the connecting pipeline.

Optionally, one end of the telescopic spring is overlapped with the connecting pipe, and the other end of the telescopic spring is overlapped with the piston head.

Optionally, the diameters of the limiting disc and the telescopic spring are both larger than the diameter of the through hole, and the diameter of the telescopic spring is smaller than the diameter of the piston head.

Optionally, the diameter of the piston head is adapted to the inner diameter of the connecting tube.

Optionally, the diameter of the through hole is matched with the diameter of the movable rod.

Optionally, the piston head comprises a support block and a sealing rubber pad, and the sealing rubber pad is matched with the inner wall of the third connecting pipeline.

The utility model has the advantages of it is following:

this online chemical instrumentation water sample pressure limiting device of power plant, in the use, through being provided with the pressure limiting mechanism, the pressure limiting mechanism is including linking up the pipeline, the through-hole, the movable rod, the piston head, spacing dish and expanding spring, the one end at this lateral conduit of third connecting tube is installed to the pressure limiting mechanism, the piston head by the expanding spring extrusion is located the inside of third connecting tube, when the inside pressure of third connecting tube is stronger, the pressure limiting mechanism can regard as the device of automatic pressure release, it adjusts to need not to report to the police and wait for the staff, the pressure release can be adjusted automatically, high durability and convenient use, the labor force is saved, the usability of the device is greatly improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is an enlarged schematic view of a structure shown in fig. 3 according to the present invention.

In the figure: 1-an online instrument, 2-a first connecting pipeline, 3-a pipeline joint, 4-a second connecting pipeline, 5-a third connecting pipeline, 6-a pressure relief pipeline, 7-a pressure limiting mechanism, 701-a connecting pipeline, 702-a through hole, 703-a movable rod, 704-a piston head, 705-a limiting disc and 706-a telescopic spring.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1-4, a water sample pressure limiting device for an online chemical instrument of a power plant comprises an online chemical instrument 1, a first connecting pipe 2, a pipe joint 3, a second connecting pipe 4, a third connecting pipe 5 and a pressure relief pipe 6, wherein the first connecting pipe 2 is fixedly connected to one side of the online chemical instrument 1, the pipe joint 3 is installed at one end of the first connecting pipe 2 far from the online chemical instrument 1, the second connecting pipe 4 and the third connecting pipe 5 are installed inside the pipe joint 3, a pressure limiting mechanism 7 is installed at one end of the third connecting pipe 5 far from the pipe joint 3, and the pressure relief pipe 6 is installed at one side of the pressure limiting mechanism 7;

the pressure limiting mechanism 7 comprises a connecting pipe 701, a through hole 702, a movable rod 703, a piston head 704, a limiting disc 705 and a telescopic spring 706, the through hole 702 is arranged in the connecting pipe 701, the movable rod 703 is movably connected in the connecting pipe 701 through the through hole 702, the piston head 704 is fixedly connected at one end of the movable rod 703, the piston head 704 is positioned in the connecting pipe 701, the limiting disc 705 is fixedly connected at one end of the movable rod 703, which is far away from the piston head 704, the telescopic spring 706 is sleeved on the outer surface of the movable rod 703, the telescopic spring 706 is positioned in the connecting pipe 701, the pressure limiting mechanism 7 can be used as an automatic pressure relief device, an alarm is not needed to wait for a worker to adjust, the pressure relief can be automatically adjusted, the use is convenient, the labor force is saved, the usability of the device is greatly improved, the pressure limiting mechanism 7 is used as a whole, the piston head 704 in the pressure, the piston head 704 is slightly driven by the water sample pressure in the third connecting pipe 5 within a certain range, so that the water sample cannot be discharged from the pressure relief pipe 6, if the water sample pressure in the third connecting pipe 5 exceeds a critical value, the piston head 704 is separated from the third connecting pipe 5, the water sample is discharged from the pressure relief pipe 6 for pressure relief, and if the pressure is lower than the critical value, the water sample enters the third connecting pipe 5 to be prevented from flowing out of the pressure relief pipe 6.

As an optimized technical scheme of the utility model, the one end and the linking pipe 701 overlap joint of expanding spring 706, and the other end and the piston head 704 overlap joint of expanding spring 706.

As a preferred technical scheme of the utility model, the diameter of spacing dish 705 and expanding spring 706 all is greater than the diameter of through-hole 702, and expanding spring 706's diameter is less than the diameter of piston head 704.

As a preferred technical scheme of the utility model, the diameter of piston head 704 and the internal diameter of linking pipe 701 are adapted.

As an optimized technical scheme of the utility model, the diameter of through-hole 702 and movable rod 703 looks adaptation.

As an optimized technical scheme of the utility model, piston head 704 includes supporting shoe and sealing rubber pad, and sealing rubber pad and third connecting tube 5's inner wall looks adaptation.

The working process of the utility model is as follows: when the device is used, all the components in the device are installed completely, so that the pressure limiting mechanism 7 is connected with the third connecting pipe 5 and the pressure relief pipe 6, the piston head 704 extends into the third connecting pipe 5, the piston head 704 is tightly contacted with the inner wall of the third connecting pipe 5 and is in a watertight state, the second connecting pipe 4 is installed and connected with the water sample outlet, the water sample enters the online chemical instrument 1 through the second connecting pipe 4, the pipe joint 3 and the first connecting pipe 2 for inspection, if the pressure in the second connecting pipe 4 is higher in the process, the pressure of the water flow in the second connecting pipe 4 can squeeze the piston head 704, when the piston head 704 squeezes the expansion spring 706 to contract, the water sample in the second connecting pipe 4 can pass through the third connecting pipe 5 and flow out of the pressure relief pipe 6, when the water pressure is reduced, the expansion spring 706 automatically restores the length and pushes the piston head 704 to enter the third connecting pipe 5, in order to prepare for the time of need pressure release next time and use, in the use, through being provided with pressure limiting mechanism 7, pressure limiting mechanism 7 is including linking up pipeline 701, through-hole 702, movable rod 703, piston head 704, spacing dish 705 and expanding spring 706, pressure limiting mechanism 7 installs the one end at this lateral conduit of third connecting tube 5, piston head 704 by expanding spring 706 extruded is located the inside of third connecting tube 5, when the inside pressure of third connecting tube 5 is stronger, pressure limiting mechanism 7 can regard as the device of automatic pressure release, need not to report to the police and wait that the staff adjusts, can adjust the pressure release automatically, and it is comparatively convenient to use, is favorable to saving the labour, the usability of the device has been improved greatly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an online chemical instrumentation water sample pressure limiting device of power plant, includes online chemical instrumentation (1), first connecting tube (2), pipe joint (3), second connecting tube (4), third connecting tube (5) and pressure release pipeline (6), its characterized in that: one side of the online chemical instrument (1) is fixedly connected with a first connecting pipeline (2), one end, far away from the online chemical instrument (1), of the first connecting pipeline (2) is provided with a pipeline joint (3), a second connecting pipeline (4) and a third connecting pipeline (5) are arranged inside the pipeline joint (3), one end, far away from the pipeline joint (3), of the third connecting pipeline (5) is provided with a pressure limiting mechanism (7), and a pressure relief pipeline (6) is arranged on one side of the pressure limiting mechanism (7);

pressure limiting mechanism (7) including linking up pipeline (701), through-hole (702), movable rod (703), piston head (704), spacing dish (705) and expanding spring (706), the inside of linking up pipeline (701) seted up through-hole (702), the inside of linking up pipeline (701) have movable rod (703) through-hole (702) swing joint, the one end fixedly connected with piston head (704) of movable rod (703), piston head (704) be located the inside of linking up pipeline (701), one end fixedly connected with spacing dish (705) that piston head (704) were kept away from in movable rod (703), the surface of movable rod (703) cup jointed expanding spring (706), expanding spring (706) be located the inside of linking up pipeline (701).

2. The power plant online chemical instrument water sample pressure limiting device of claim 1, characterized in that: one end of the telescopic spring (706) is overlapped with the connecting pipe (701), and the other end of the telescopic spring (706) is overlapped with the piston head (704).

3. The power plant online chemical instrument water sample pressure limiting device of claim 1, characterized in that: the diameters of the limiting disc (705) and the telescopic spring (706) are both larger than that of the through hole (702), and the diameter of the telescopic spring (706) is smaller than that of the piston head (704).

4. The power plant online chemical instrument water sample pressure limiting device of claim 1, characterized in that: the diameter of the piston head (704) is matched with the inner diameter of the connecting pipe (701).

5. The power plant online chemical instrument water sample pressure limiting device of claim 1, characterized in that: the diameter of the through hole (702) is matched with that of the movable rod (703).

6. The power plant online chemical instrument water sample pressure limiting device of claim 1, characterized in that: the piston head (704) comprises a supporting block and a sealing rubber pad, and the sealing rubber pad is matched with the inner wall of the third connecting pipeline (5).