CN214251341U - Minimum opening pressure testing arrangement of formula of swinging check valve - Google Patents
Minimum opening pressure testing arrangement of formula of swinging check valve Download PDFInfo
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- CN214251341U CN214251341U CN202120536906.0U CN202120536906U CN214251341U CN 214251341 U CN214251341 U CN 214251341U CN 202120536906 U CN202120536906 U CN 202120536906U CN 214251341 U CN214251341 U CN 214251341U
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- frame body
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Abstract
The utility model provides a minimum opening pressure testing device for a swing check valve, which comprises a frame body and a fixing part arranged on the frame body and used for maintaining the position of the swing check valve; the pressure sensor is provided with a pressure detection probe which can extend into the swing check valve and is abutted against one side of the valve clack of the swing check valve; the displacement detection assembly comprises a seat body and a displacement sensor arranged on the seat body, the seat body is positioned on the other side of the fixing part, the fixing position of the seat body on the frame body is adjustable, and the displacement sensor is provided with a displacement detection probe which can stretch into the swing check valve and is abutted against the other opposite side of the valve clack. The utility model discloses a testing arrangement simple structure, measurement accuracy height.
Description
Technical Field
The utility model relates to a check valve technical field, in particular to swing check valve minimum opening pressure testing arrangement.
Background
The swing check valve is one of check valves, which is arranged on a pipeline and can allow a medium to pass through in a forward direction, and when the medium flows in a reverse direction, the check valve automatically stops to prevent the medium from passing through; referring to fig. 1, swing check valve mainly comprises valve body, disk seat, and valve clack, and the one end of valve clack is articulated with the valve body, and when the medium forward flow, the medium will promote the valve clack to the direction of keeping away from the disk seat rotates for this check valve can allow the medium to pass through, and when the medium reverse flow, the medium will promote the valve clack to the direction rotation of being close to the disk seat, simultaneously because of the dead weight of valve clack, makes the valve clack can laminate with the disk seat, thereby by the reverse flow of medium.
The opening force of the swing check valve clack can be influenced by the dead weight of the clack and the friction force between the rotating shaft of the clack and the valve body, and the minimum opening force of the check valve clack not only influences the selection of the check valve, but also is an important parameter for checking whether the check valve is qualified.
The application number is 201410355195.1's chinese utility model patent application provides a check valve opening pressure testing arrangement, and it includes the air compressor machine, and the air compressor machine connects gradually high-pressure gas holder, governing valve, low pressure gas holder and by the test valve through the pipeline, install manometer and relief valve on high-pressure gas holder and the low pressure gas holder. This patent represents a prior art solution for testing the opening pressure of a valve by pneumatic or hydraulic pressure, which has the drawback that: for the accuracy of the measurement results, the valve body and the gas (liquid) filled structure need to be strictly sealed, resulting in a complicated testing device.
The application number is 201210118814.6's chinese utility model patent application provides a check valve opening pressure detection device, and it includes the pressure sensor who removes along the device body to and connect the dc circuit between valve body and check valve spring, install the pilot lamp that is used for detecting the dc circuit break-make on the dc circuit. In the patent, a pressure sensor pushes a valve ball, and a circuit is arranged to judge whether the valve ball is separated from a valve body so as to judge whether the valve is opened. Firstly, however, for the swing check valve, the valve flap is always connected with the valve body, so the solution provided by the patent for judging the opening of the valve is not suitable for the swing check valve; secondly, minimum cracking pressure refers to minimum effective cracking pressure, and in the scheme provided by the patent, whether the check valve is effectively cracked is difficult to judge, and the measuring result is greatly influenced by an operator.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a swing check valve minimum opening pressure testing arrangement to can be comparatively simple, accurate measure swing check valve's minimum opening force.
A swing check valve minimum opening pressure test device, comprising:
a frame body;
the fixing part is arranged on the frame body and is used for keeping the position of the swing check valve;
the pressurizing assembly comprises a base and a pressure sensor arranged on the base, the base is positioned on one side of the fixing part and can slide on the frame body, and the pressure sensor is provided with a pressure detection probe which can extend into the swing check valve and is abutted against one side of the valve clack of the swing check valve;
the displacement detection assembly comprises a seat body and a displacement sensor arranged on the seat body, wherein the seat body is positioned on the other side of the fixed part, the fixed position of the seat body on the frame body is adjustable, and the displacement sensor is provided with a displacement detection probe which can stretch into the swing check valve and is abutted against the other opposite side of the valve clack.
Furthermore, the pressurizing assembly further comprises a first driving device arranged on the frame body, the power output end of the first driving device is connected with the base, and the first driving device is used for driving the base to slide on the frame body.
Furthermore, the displacement detection assembly further comprises a second driving device fixedly arranged on the frame body, a power output end of the second driving device is connected with the base body, and the second driving device is used for driving the base body to move to different positions on the frame body.
Furthermore, first drive arrangement including set firmly in rotary power output device on the support body, and locate rotary power output device's power take off end with transmission unit between the base, the warp transmission unit transmission, rotary power output device can order about the base rectilinear movement.
Furthermore, the rotary power output device adopts a servo motor fixedly arranged on the frame body, the transmission unit comprises a lead screw coaxially and fixedly connected with an output shaft of the servo motor, and a screw hole capable of being in threaded connection with the lead screw is formed in the base.
Furthermore, a guide unit is arranged between the base and the frame body and used for guiding the linear movement of the base relative to the frame body.
Further, the guide unit includes a T-shaped guide groove formed on the frame body, and a T-shaped block formed on the base and fitted into the guide groove.
Furthermore, the device for testing the minimum opening pressure of the swing check valve further comprises a control unit, wherein the control unit is respectively in communication connection with the pressure sensor and the displacement sensor and is in control connection with the first driving device and the second driving device; the control unit can control the first driving device to act in response to the detection signal of the displacement sensor.
Further, the fixed part including set firmly in fixed block on the support body, be constructed the recess on the higher authority of fixed block, the recess is used for supplying the formula check valve that opens soon is placed, just set up the intercommunicating pore of being connected with outside negative pressure generator on the bottom surface of recess, the formula check valve that opens soon can set firmly because of the negative pressure on the fixed block.
Compared with the prior art, the utility model discloses following advantage has:
the minimum opening pressure testing device for the swing check valve of the utility model is characterized in that a pressure sensor is arranged on one side of the valve clack, a displacement sensor is arranged on the other side of the valve clack, the pressure applied to the valve clack is detected in real time through the pressure sensor, and whether the check valve is effectively opened or not is judged through the detection of the displacement of the valve clack; the testing device does not need a sealing structure and has a simpler structure; and should survey and establish the device and measure through the displacement to the valve clack and open in order to judge the check valve, can effectively open the check valve and carry out accurate judgement to have comparatively accurate measuring result.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of an overall structure of a minimum opening pressure testing device for a swing check valve according to an embodiment of the present invention;
fig. 2 is a schematic view of a matching structure of a base and a frame body according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a control principle of the device for testing the minimum opening pressure of the swing check valve according to the first embodiment of the present invention.
Description of reference numerals:
the device comprises a frame body 1, a fixing part 2, a groove 201, a pressurizing assembly 3, a base 31, a pressure sensor 32, a pressure detection probe 33, a displacement detection assembly 4, a seat body 41, a displacement sensor 42, a displacement detection probe 43, a swing check valve 5, a lead screw 6 and a control unit 7.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example one
The present embodiment relates to a device for testing a minimum opening pressure of a swing check valve 5, which is shown in fig. 1 and includes a frame body 1, a fixing portion 2, a pressurizing assembly 3 and a displacement detecting assembly 4; the fixing part 2 is arranged on the frame body 1 and used for keeping the position of the swing check valve 5; the pressurizing assembly 3 includes a base 31 and a pressure sensor 32 disposed on the base 31, the base 31 is located on one side of the fixing portion 2 and can slide on the frame body 1, and the pressure sensor 32 has a pressure detecting probe 33 capable of extending into the swing check valve 5 and abutting against one side of the valve flap of the swing check valve 5.
The displacement detecting assembly 4 comprises a seat body 41 and a displacement sensor 42 arranged on the seat body 41, the seat body 41 is positioned at the other side of the fixing part 2, the fixing position of the seat body 41 on the frame body 1 is adjustable, and the displacement sensor 42 is provided with a displacement detecting probe 43 which can extend into the swing check valve 5 and is abutted against the other opposite side of the valve clack.
The embodiment provides a fixing part 2 with better use effect, referring to fig. 1, the fixing part 2 of the embodiment includes a fixing block fixed on a frame body 1, a groove 201 is formed on the upper surface of the fixing block, and the groove 201 is used for placing a swing check valve 5 (hereinafter referred to as check valve) to be measured; and a communication hole connected with an external negative pressure generating device is formed on the bottom surface of the groove 201, and the check valve can be fixedly arranged on the fixing block due to the negative pressure.
Specifically, a layer of sealing ring is fixedly arranged on the side wall of the groove 201, and after the check valve is placed in the groove 201, a closed cavity is defined between the bottom of the check valve and the bottom surface of the groove 201; the external negative pressure generating device adopts the existing negative pressure machine, the gas input end of the negative pressure machine is connected with the communicating hole through a pipeline, and the negative pressure machine enables the cavity to generate negative pressure, so that the check valve is fixed on the fixing part 2, and the minimum opening pressure can be conveniently measured. It should be noted that the structure of the fixing portion 2 is not limited to this, for example, a structure similar to a vice may be further used to fix the check valve, but compared with this, the solution of the present embodiment can fix the check valve on the fixing portion 2 more conveniently, and also can detach the check valve from the fixing portion 2 more conveniently, and will not damage the appearance of the check valve, and since understanding is not affected, the drawing of the present embodiment does not show the negative pressure machine and the pipeline between the negative pressure machine and the cavity.
This embodiment still provides the scheme that can be automatic, convenient carry out the minimum opening pressure test of check valve, and specifically speaking, the pressure components 3 of this embodiment still includes the first drive arrangement who locates on support body 1, and this first drive arrangement's power take off end is connected with base 31, and first drive arrangement is used for ordering about base 31 and slides on support body 1.
The displacement detecting assembly 4 of this embodiment includes a second driving device fixedly disposed on the frame body 1, a power output end of the second driving device is connected to the base body 41, and the second driving device is configured to drive the base body 41 to move to different positions on the frame body 1.
In this embodiment, the first driving device includes a first rotary power output device fixed on the frame body 1, and a first transmission unit disposed between a power output end of the first rotary power output device and the base 31, and through transmission of the first transmission unit, the power output end of the first rotary power output device can drive the base 31 to move linearly in a direction close to or away from the fixing portion 2.
In this embodiment, the second driving device includes a second rotary power output device fixed on the frame body 1, and a second transmission unit disposed between a power output end of the second rotary power output device and the base body 41, and through transmission of the second transmission unit, the power output end of the second rotary power output device can drive the base body 41 to move linearly in a direction close to or away from the fixing portion 2.
In this embodiment, the first rotary power output device includes a first servo motor, the second rotary power output device includes a second servo motor, and it should be noted that the first rotary power output device and the second rotary power output device may further include a speed reducer whose input end is connected to the output end of the corresponding servo motor, and at this time, the output end of the speed reducer is connected to the power input end of the transmission unit.
In this embodiment, the first transmission unit and the second transmission unit both include a lead screw 6 coaxially and fixedly connected to an electrode shaft of the servo motor, and screw holes capable of being screwed with the lead screw 6 are disposed on the base 31 and the seat body 41. It should be noted that, since understanding is not impaired, the servo motor is not shown in the drawings of the present embodiment.
In this embodiment, a first guide unit is provided between the base 31 and the frame body 1 for guiding the linear movement of the base 31 relative to the frame body 1; a second guide unit is provided between the seat body 41 and the frame body 1 for guiding the linear movement of the seat body 41 relative to the frame body 1.
Referring to fig. 1 and 2, the first guide unit of the present embodiment includes a T-shaped guide groove formed on the frame body 1, and further includes a first T-shaped block formed on the base 31 to be fitted into the guide groove; the second guide unit of the present embodiment includes a second T-block configured on the base 31 to fit into the guide groove.
Based on the above structure, the base 31 of the present embodiment can be driven by the first servo motor to move toward or away from the fixing portion 2; and the seat 41 can be driven by the second servo motor to move towards or away from the fixing part 2.
The working process of the minimum opening pressure testing device for the swing check valve 5 in the embodiment is as follows: an operator starts the first servo motor, the first servo motor drives the base 31 to move, so that the pressure detection probe 33 of the pressure sensor 32 on the base 31 extends into the valve body and is abutted against one side of the valve clack, and particularly, the pressure detection probe 33 is judged to be abutted against the valve clack when the pressure sensor 32 starts to read; the second servo motor is turned on, the second servo motor drives the seat body 41 to move, so that the displacement detection probe 43 on the seat body 41 extends into the valve body from the other side of the valve body and is abutted against the other side of the valve clack, and particularly, the displacement detection probe 43 is judged to be abutted against the valve clack when the displacement sensor 42 starts to read.
And continuing to start the first servo motor, driving the base 31 to move by the first servo motor, and enabling the pressure detection probe 33 to push the valve body until the reading of the displacement sensor 42 reaches a preset value, at the moment, judging that the valve clack is effectively opened, and at the moment, the reading on the pressure sensor 32 is the minimum opening pressure of the check valve.
In order to continuously and accurately test the minimum opening pressure of the swing check valve 5, referring to fig. 3, the test device of the present embodiment further includes a control unit 7, and the control unit 7 is in communication connection with the pressure sensor 32 and the displacement sensor 42, respectively, and is in control connection with the first driving device and the second driving device, and the control unit can control the first driving device to operate in response to a detection signal of the displacement sensor 42.
In this embodiment, the control unit 7 specifically adopts a PLC, which is capable of receiving the detection information sent by the pressure sensor 32 and the displacement sensor 42, and controlling the first servo motor and the second servo motor to be started or stopped according to the detection information sent by the pressure sensor 32 and the displacement sensor 42.
Specifically, after the check valve is fixed on the fixing portion 2, the testing device is opened, the control unit controls the first servo motor and the second servo motor to start, respectively drives the pressure sensor 32 and the displacement sensor 42 to move in the direction of abutting against the valve flap, when the pressure detected by the pressure detection probe 33 is equal to or greater than a preset pressure threshold and the displacement detected by the displacement detection probe 43 is equal to or greater than a preset first displacement threshold, the control unit judges that the pressure detection probe 33 and the displacement detection probe 43 are in contact with the valve flap, at this time, the control unit controls the first servo motor to open, controls the second servo motor to keep closed, the pressure detection probe 33 pushes the valve flap, the displacement detection probe 43 detects the displacement of the valve flap in real time until the displacement detected by the displacement detection probe 43 is greater than or equal to a preset second displacement threshold, at this time, the control unit controls the first servo motor to close, at this time, the pressure value detected by the pressure sensor 32 is the minimum opening pressure of the check valve, and the control unit can send the data to an external server for storage and reading.
In summary, in the minimum opening pressure testing device of the swing check valve 5 according to the embodiment, the pressure sensor 32 is disposed on one side of the valve flap, the displacement sensor 42 is disposed on the other side of the valve flap, the pressure applied to the valve flap is detected in real time by the pressure sensor 32, and whether the check valve is effectively opened or not is determined by detecting the displacement of the valve flap; the testing device does not need a sealing structure and has a simpler structure; and should survey and establish the device and measure through the displacement to the valve clack and open in order to judge the check valve, can effectively open the check valve and carry out accurate judgement to have comparatively accurate measuring result.
Example two
The embodiment relates to a method for testing the minimum opening pressure of a swing check valve, which comprises the following steps:
a detection probe of a pressure sensor is abutted against one side of a valve clack of a swing check valve;
a detection probe of the displacement sensor is abutted against the other side of the valve clack;
moving the pressure sensor to enable the detection probe to push the valve plate;
when the displacement of the valve clack detected by a detection probe of the displacement sensor is greater than or equal to a preset displacement threshold value, reading the count of the pressure sensor, namely the minimum opening pressure of the swing check 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 (9)
1. A swing check valve minimum opening pressure testing device, comprising:
a frame body;
the fixing part is arranged on the frame body and is used for keeping the position of the swing check valve;
the pressurizing assembly comprises a base and a pressure sensor arranged on the base, the base is positioned on one side of the fixing part and can slide on the frame body, and the pressure sensor is provided with a pressure detection probe which can extend into the swing check valve and is abutted against one side of the valve clack of the swing check valve;
the displacement detection assembly comprises a seat body and a displacement sensor arranged on the seat body, wherein the seat body is positioned on the other side of the fixed part, the fixed position of the seat body on the frame body is adjustable, and the displacement sensor is provided with a displacement detection probe which can stretch into the swing check valve and is abutted against the other opposite side of the valve clack.
2. The swing check valve minimum opening pressure test device according to claim 1, wherein: the pressurizing assembly further comprises a first driving device arranged on the frame body, the power output end of the first driving device is connected with the base, and the first driving device is used for driving the base to slide on the frame body.
3. The swing check valve minimum opening pressure test device according to claim 2, wherein: the displacement detection assembly further comprises a second driving device fixedly arranged on the frame body, the power output end of the second driving device is connected with the base body, and the second driving device is used for driving the base body to move to different positions on the frame body.
4. The swing check valve minimum opening pressure test device according to claim 3, wherein: the first driving device comprises a rotary power output device fixedly arranged on the frame body and a transmission unit arranged between the power output end of the rotary power output device and the base, and the rotary power output device can drive the base to move linearly through transmission of the transmission unit.
5. The swing check valve minimum opening pressure test device according to claim 4, wherein: the rotary power output device adopts a servo motor fixedly arranged on the frame body, the transmission unit comprises a lead screw coaxially and fixedly connected with an output shaft of the servo motor, and a screw hole capable of being in threaded connection with the lead screw is formed in the base.
6. The swing check valve minimum opening pressure test device according to claim 5, wherein: the base with be equipped with the guide unit between the support body for to the base is for the rectilinear movement of support body leads.
7. The swing check valve minimum opening pressure test device according to claim 6, wherein: the guide unit comprises a T-shaped guide groove formed on the frame body and a T-shaped block formed on the base and matched with the guide groove.
8. The swing check valve minimum opening pressure test device according to claim 3, wherein: the device for testing the minimum opening pressure of the swing check valve further comprises a control unit, wherein the control unit is respectively in communication connection with the pressure sensor and the displacement sensor and is in control connection with the first driving device and the second driving device; the control unit can control the first driving device to act in response to the detection signal of the displacement sensor.
9. The swing check valve minimum opening pressure test device according to claim 1, wherein: the fixed part including set firmly in fixed block on the support body, be constructed flutedly on the higher authority of fixed block, the recess is used for supplying swing check valve places, just set up the intercommunicating pore of being connected with outside negative pressure generator on the bottom surface of recess, swing check valve can set firmly because of the negative pressure on the fixed block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120536906.0U CN214251341U (en) | 2021-03-15 | 2021-03-15 | Minimum opening pressure testing arrangement of formula of swinging check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120536906.0U CN214251341U (en) | 2021-03-15 | 2021-03-15 | Minimum opening pressure testing arrangement of formula of swinging check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214251341U true CN214251341U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120536906.0U Active CN214251341U (en) | 2021-03-15 | 2021-03-15 | Minimum opening pressure testing arrangement of formula of swinging check valve |
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| Country | Link |
|---|---|
| CN (1) | CN214251341U (en) |
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2021
- 2021-03-15 CN CN202120536906.0U patent/CN214251341U/en active Active
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