CN215004056U

CN215004056U - Online detector for backflow preventer

Info

Publication number: CN215004056U
Application number: CN202121240808.9U
Authority: CN
Inventors: 施金坡; 李连亮
Original assignee: Pulian Power Fluid Control Shanghai Co Ltd
Current assignee: Pulian Power Fluid Control Shanghai Co Ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-12-03
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses an online detector of a backflow preventer, which comprises a protective shell, a first detection port, a second detection port, a third detection port, a drain port, a first reversing valve, a second reversing valve, a third reversing valve, a pressure measuring valve, a connecting pipe, a processing and display collecting module, a power switch, a battery module, a DC5V input port, a regulating needle valve and a drain valve; the first detection port, the second detection port, the third detection port and the evacuation port are arranged in four corners, and a straight line formed by the first detection port and the third detection port is parallel to a straight line formed by the second detection port and the evacuation port; the first detection port and the third detection port are connected through a connecting pipe, the third detection port and the second detection port are connected through a connecting pipe, the second detection port and the evacuation port are connected through a connecting pipe, and the first detection port and the evacuation port are connected through a connecting pipe. The utility model discloses a backflow preventer on-line measuring appearance can carry out pressure differential around the on-line measuring valve on the basis that does not dismantle and do not influence the normal work of valve.

Description

Online detector for backflow preventer

Technical Field

The utility model relates to a machine-building field, in particular to backflow preventer on-line measuring appearance.

Background

The existing backflow preventer detector is large in size, a valve needs to be brought to a laboratory during testing, the actual pressure value of a product under the field working condition cannot be measured by testing the valve on a special testing machine, the performance of each valve often reaches the standard in the laboratory, then the valve is installed on the field actual working condition, the data measured by a monitoring station at the downstream cannot reach the expected value, and field personnel cannot judge which valve has the problem of pressure difference; blind site troubleshooting problems can result in significant waste of time, labor, and money.

There is a need for an online detector of backflow preventer with more compact structure, smaller volume, lighter weight, capability of automatically calculating pressure difference and water loss, capability of being held by hand, and capability of online detecting the pressure difference between the front and the rear of the valve without disassembly and affecting the normal operation of the valve.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a backflow preventer on-line measuring appearance, the utility model discloses a backflow preventer on-line measuring appearance structure is compacter, the volume is littleer, the quality is lighter, can the automatic calculation pressure differential water loss, can hand, can carry out pressure differential around the on-line measuring valve on the basis that does not dismantle and do not influence the normal work of valve.

The utility model discloses a solve above-mentioned technical problem through following technical scheme:

the utility model provides an online detector of a backflow preventer, which comprises a protective shell, a first detection port, a second detection port, a third detection port, a drain port, a first reversing valve, a second reversing valve, a third reversing valve, a pressure measuring valve, a connecting pipe, a processing and display integrated module, a power switch, a battery module, a DC5V input port, a regulating needle valve and a drain valve; the first detection port, the second detection port, the third detection port and the evacuation port are arranged in four corners, wherein a straight line formed by the first detection port and the third detection port is parallel to a straight line formed by the second detection port and the evacuation port; the first detection port and the third detection port are connected through the connecting pipe, the third detection port and the second detection port are connected through the connecting pipe, the second detection port and the evacuation port are connected through the connecting pipe, and the first detection port and the evacuation port are connected through the connecting pipe; the first reversing valve is communicated with the first detection port, the second reversing valve is communicated with the second detection port, the third reversing valve is communicated with the third detection port, and the emptying valve is communicated with the emptying port; the adjusting needle valve is arranged on a connecting pipe between the emptying port and the second detection port; the pressure measuring valve is arranged on a connecting pipe between the first detection port and the third detection port, the pressure measuring valve is connected with the processing and display collecting module, the battery module is respectively communicated with the DC5V input port, the processing and display collecting module and the power switch, and the power switch is connected with the processing and display collecting module; the protective housing cover is located the outside of first switching-over valve, second switching-over valve, third switching-over valve, pressure measuring valve, connecting pipe, processing collection show module, battery module, regulation needle valve and exhaust-gas valve, switch with the DC5V input port set up in the side of protective housing.

In the utility model, the first detection port, the second detection port, the third detection port and the evacuation port form a rectangular structure, water flow enters from the first detection port or the third detection port and is discharged from the second detection port or the evacuation port, and the measurement of the pressure difference is realized by matching a pressure measuring valve and a processing and integrating and displaying module;

preferably, the length of the connecting pipe between the second detection port and the third detection port is 1.2-2 times that of the connecting pipe between the first detection port and the third detection port;

preferably, the aperture of the first detection port is 1.5 to 2 times of the pipe diameter of the connection pipe.

The utility model discloses in, first switching-over valve, second switching-over valve, third switching-over valve and the blowoff valve is the field conventionality, through its rotation, realizes the change of the flow direction of rivers.

The utility model discloses in, the pressure-measuring valve is the field conventionality for measure the pressure differential between first detection mouth and the second detection mouth, perhaps the pressure differential between first detection mouth and the third detection mouth, perhaps the second detects the pressure differential between mouth and the third detection mouth.

In the present invention, the connecting pipe is conventional in the art, and is used for realizing the flow of water.

The utility model discloses in, it is used for reading and shows the pressure differential to handle collection and show the module.

In the present invention, the power switch, the battery module and the DC5V input port are in the field.

The utility model discloses in, adjust the needle valve and be used for realizing the regulation of discharge size.

In the utility model, the protective shell is used for protecting the whole equipment and realizing integration;

preferably, four corners of the upper surface of the protective shell are sleeved with anti-collision strips;

preferably, the protective shell is made of TPU.

The utility model discloses a backflow preventer on-line detector's theory of operation does: and connecting the first detection port with the upstream water outlet, connecting the third detection port with the upstream water outlet, twisting the first reversing valve and the third reversing valve to enable water flow to enter the first detection port and the third detection port, and reading the pressure difference between the first detection port and the third detection port through the processing and integrated display module.

The utility model discloses an actively advance the effect: the utility model discloses a backflow preventer on-line measuring appearance structure is compacter, the volume is littleer, the quality is lighter, can automatic calculation pressure differential water loss, can hand, can carry out pressure differential around the on-line measuring valve on the basis that does not dismantle and do not influence the normal work of valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a plan view of an on-line detector of a backflow preventer according to an embodiment of the present invention;

FIG. 2 is a side view of the backflow preventer on-line detector according to the embodiment of the present invention.

Description of reference numerals:

1. a first detection port; 2. A second detection port;

3. a third detection port; 4. Emptying the air;

5. a connecting pipe; 6. Adjusting a needle valve;

7. a battery module; 8. A DC5V input port;

9. a power switch; 10. A processing centralized display module;

11. a first direction changing valve; 21. A second directional control valve;

31. a third directional control valve; 41. An evacuation valve;

12. a pressure measuring valve; 13. A protective shell.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 and fig. 2, the present embodiment provides an online detector for a backflow preventer, including a protective shell 13, a first detection port 1, a second detection port 2, a third detection port 3, an evacuation port 4, a first directional valve 11, a second directional valve 21, a third directional valve 31, a pressure measurement valve 12, a connection pipe 5, a processing centralized display module 10, a power switch 9, a battery module 7, a DC5V input port 8, a regulating needle valve 6, and an evacuation valve 41; the first detection port 1, the second detection port 2, the third detection port 3 and the evacuation port 4 are arranged in four corners, wherein a straight line formed by the first detection port 1 and the third detection port 3 is parallel to a straight line formed by the second detection port 2 and the evacuation port 4; the first detection port 1 is connected with the third detection port 3 through a connecting pipe 5, the third detection port 3 is connected with the second detection port 2 through the connecting pipe 5, the second detection port 2 is connected with the evacuation port 4 through the connecting pipe 5, and the first detection port 1 is connected with the evacuation port 4 through the connecting pipe 5; the first reversing valve 11 is communicated with the first detection port 1, the second reversing valve 21 is communicated with the second detection port 2, the third reversing valve 31 is communicated with the third detection port 3, and the emptying valve 41 is communicated with the emptying port 4; the adjusting needle valve 6 is arranged on the connecting pipe 5 between the emptying port 4 and the second detection port 2; the pressure measuring valve 12 is arranged on the connecting pipe 5 between the first detection port 1 and the third detection port 3, the pressure measuring valve 12 is connected with the processing and display collecting module 10, the battery module 7 is respectively communicated with the DC5V input port 8, the processing and display collecting module 10 and the power switch 9, and the power switch 9 is connected with the processing and display collecting module 10; the protective shell 13 covers the first direction valve 11, the second direction valve 21, the third direction valve 31, the pressure measuring valve 12, the connecting pipe 5, the processing and display integrated module 10, the battery module 7, the adjusting needle valve 6 and the evacuation valve 41, and the power switch 9 and the input port 8 of the DC5V are arranged on the side edge of the protective shell 13.

In this embodiment, the first detection port 1, the second detection port 2, the third detection port 3 and the evacuation port 4 form a rectangular structure, water flows enter from the first detection port 1 or the third detection port 3 and is discharged from the second detection port 2 or the evacuation port 4, and the measurement of the pressure difference is realized by matching the pressure measurement valve 12 and the processing and display integrated module 10; the length of the connecting pipe 5 between the second detection port 2 and the third detection port 3 is 1.5 times that of the connecting pipe 5 between the first detection port 1 and the third detection port 3; the aperture of the first detection port 1 is 1.8 times of the pipe diameter of the connecting pipe 5.

In this embodiment, the first direction valve 11, the second direction valve 21, the third direction valve 31, and the evacuation valve 41 realize the change of the flow direction of the water flow by their respective rotations.

In this embodiment, the pressure measurement valve 12 is used to measure a pressure difference between the first detection port 1 and the second detection port 2, or a pressure difference between the first detection port 1 and the third detection port 3, or a pressure difference between the second detection port 2 and the third detection port 3.

In this embodiment, the connection pipe 5 is used to realize the flow of water.

In this embodiment, the processing integration and display module 10 is used for reading and displaying the pressure difference.

In this embodiment, the adjustment needle valve 6 is used to adjust the water flow rate.

In this embodiment, the protective case 13 is used to protect the entire device and achieve integration.

The working principle of the online detector for the backflow preventer is as follows: and connecting the first detection port with the upstream water outlet, connecting the third detection port with the upstream water outlet, twisting the first reversing valve and the third reversing valve to enable water flow to enter the first detection port and the third detection port, and reading the pressure difference between the first detection port and the third detection port through the processing and integrated display module.

The online detector for the backflow preventer has the advantages of more compact structure, smaller volume, lighter weight, capability of automatically calculating differential pressure and water loss, handholdability, and capability of detecting the front and back differential pressure of the valve on line on the basis of not dismounting and not influencing the normal work of the valve.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The online detector for the backflow preventer is characterized by comprising a protective shell, a first detection port, a second detection port, a third detection port, a drain port, a first reversing valve, a second reversing valve, a third reversing valve, a pressure measuring valve, a connecting pipe, a processing and display integrated module, a power switch, a battery module, a DC5V input port, a regulating needle valve and a drain valve; the first detection port, the second detection port, the third detection port and the evacuation port are arranged in four corners, wherein a straight line formed by the first detection port and the third detection port is parallel to a straight line formed by the second detection port and the evacuation port; the first detection port and the third detection port are connected through the connecting pipe, the third detection port and the second detection port are connected through the connecting pipe, the second detection port and the evacuation port are connected through the connecting pipe, and the first detection port and the evacuation port are connected through the connecting pipe; the first reversing valve is communicated with the first detection port, the second reversing valve is communicated with the second detection port, the third reversing valve is communicated with the third detection port, and the emptying valve is communicated with the emptying port; the adjusting needle valve is arranged on a connecting pipe between the emptying port and the second detection port; the pressure measuring valve is arranged on a connecting pipe between the first detection port and the third detection port, the pressure measuring valve is connected with the processing and display collecting module, the battery module is respectively communicated with the DC5V input port, the processing and display collecting module and the power switch, and the power switch is connected with the processing and display collecting module; the protective housing cover is located the outside of first switching-over valve, second switching-over valve, third switching-over valve, pressure measuring valve, connecting pipe, processing collection show module, battery module, regulation needle valve and exhaust-gas valve, switch with the DC5V input port set up in the side of protective housing.

2. The backflow preventer on-line detector of claim 1, wherein a length of the connection pipe between the second detection port and the third detection port is 1.2 to 2 times a length of the connection pipe between the first detection port and the third detection port.

3. The on-line detector of a backflow preventer as claimed in claim 1, wherein the aperture of the first detection port is 1.5 to 2 times the diameter of the connecting pipe.

4. The backflow preventer on-line detector of claim 1, wherein anti-collision strips are sleeved at four corners of the upper surface of the protective shell.

5. The backflow preventer on-line detector of claim 1, wherein the protective shell is made of TPU.