CN112098073B - Method and device for detecting cold-state check performance of check combined valve - Google Patents
Method and device for detecting cold-state check performance of check combined valve Download PDFInfo
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- CN112098073B CN112098073B CN202010888113.5A CN202010888113A CN112098073B CN 112098073 B CN112098073 B CN 112098073B CN 202010888113 A CN202010888113 A CN 202010888113A CN 112098073 B CN112098073 B CN 112098073B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Abstract
The invention relates to the technical field of equipment performance detection, and provides a method and a device for detecting the cold-state check performance of a check combined valve, wherein the method for detecting the cold-state check performance of the check combined valve comprises the following steps: the fixed check combined valve is connected with a power supply circuit of the first water inlet pipe and the electromagnetic valve head; a water outlet collecting device is arranged below the clamping water outlet pipe, the delivery water outlet pipe, the lifting water outlet pipe and the zero returning water outlet pipe which supply water to the driving mechanism; completing the normal function and normal internal leakage detection of the check combined valve; respectively installing a stop valve on each water outlet pipe and enabling the stop valves to be in a closed state, connecting the stop valve of the zero return water outlet pipe with a second water inlet pipe and supplying water, opening the stop valve of the zero return water outlet pipe, and detecting the check function of the check combination valve; and selecting the minimum driving differential pressure and the rated working condition of the check combined valve, collecting the discharged water amount of the first water pipe, weighing, and obtaining the internal leakage amount of the check combined valve. The design verification problem of the check combination valve is solved, and the reliable and safe operation of the check combination valve is guaranteed.
Description
Technical Field
The invention relates to the technical field of equipment performance detection, in particular to a method and a device for detecting cold-state check performance of a check combined valve.
Background
The driving mechanism is arranged in the high-temperature, high-pressure and irradiation environment in the reactor pressure vessel, and the three hydraulic cylinders for lifting, transferring and clamping are adopted to sequentially drive the transferring and clamping of the two sets of pin claw mechanisms to move, so that the functions of stepping up, stepping down and dropping the control rod are realized.
Based on the working principle of the driving mechanism and the characteristics of the built-in control rod driving wire of the advanced integrated small water reactor and the experience of tests and detection, a method for detecting the cold-state check performance of the check combination valve is needed to obtain key working parameters of the check combination valve, solve the design verification problem of the check combination valve and ensure the reliable and safe operation of the check combination valve.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the embodiment of the first aspect of the invention provides a method for detecting the cold-state check performance of a check combination valve, which realizes function detection and minimum driving differential pressure and internal leakage measurement of the check combination valve in the cold-state working state, obtains key working parameters of the check combination valve, solves the design verification problem of the check combination valve, and ensures reliable and safe operation of the check combination valve. And the engineering application of the control rod built-in water pressure driving technology is met, and reference is provided for engineering design verification of combination valve detection in other industrial fields.
The embodiment of the first aspect of the invention provides a method for detecting cold-state check performance of a check combined valve, which comprises the following steps: s100: installing the tested non-return combined valve on a combined valve cold-state performance detection device, and connecting a first water inlet pipe with a power supply circuit of an electromagnetic valve head;
s102: a water outlet collecting device is respectively arranged below a clamping water outlet pipe, a transmission water outlet pipe, a lifting water outlet pipe and a zero returning water outlet pipe which supply water to the driving mechanism;
s104: the first water pipe supplies water to finish normal function detection and normal internal leakage measurement of the tested non-return combination valve;
s106: respectively installing stop valves on the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe and enabling the stop valves to be in a closed state, connecting the stop valve of the zero return water outlet pipe with a second water inlet pipe and supplying water, enabling a water outlet collecting device to be connected with the first water inlet pipe, opening the stop valve of the zero return water outlet pipe, and visually detecting the check function of the tested check combination valve;
s108: and acquiring the minimum driving differential pressure for realizing the check function of the tested check combined valve, selecting the minimum driving differential pressure and the rated working condition of the tested check combined valve, collecting the discharged water quantity of the first incoming water pipe by using the discharged water collecting device, and weighing the discharged water quantity to obtain the internal leakage quantity of the tested check combined valve.
According to one embodiment of the invention, the normal function detection and normal internal leakage measurement of the check combination valve specifically comprise:
s1040, respectively operating the clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head of the tested non-return combination valve to switch on and off, and detecting the on-off and flow of water flow of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe;
s1042: the on-off programs of the clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head are respectively operated according to the step-up and step-down of a driving mechanism, and the on-off and flow of water flow of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe are detected;
s1044: and supplying water through an incoming water pipe to enable the tested check combination valve to be in a power-off state, collecting the discharged water volume of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the return-to-zero water outlet pipe, and weighing the discharged water volume respectively to obtain the internal leakage volume of the tested check combination valve.
According to an embodiment of the present invention, the acquiring a minimum driving differential pressure for implementing the check function of the tested check combination valve specifically includes:
s1080: and adjusting the water supply pressure of the second water supply pipe, and recording the minimum differential pressure data of the water inlet end of the check piston plugging valve body cavity for driving the check combination valve so as to determine the minimum driving differential pressure.
According to one embodiment of the invention, the collection time period for collecting the discharged water volume of the first incoming water pipe by the discharged water collection device is not less than half an hour.
According to an embodiment of the present invention, further comprising: step S110: and repeating the step S106 at least three times to calibrate the check function detection of the tested check combination valve.
According to an embodiment of the present invention, further comprising: step S112: and repeating the step S108 at least three times to calibrate the detection of the internal leakage amount of the tested non-return combination valve.
According to an embodiment of the invention, the effluent collection apparatus comprises: the water pipe zero return device comprises a clamping collecting cup, a transmission collecting cup, a lifting collecting cup, a first zero return collecting cup and a second zero return collecting cup, wherein the clamping collecting cup, the transmission collecting cup, the lifting collecting cup and the first zero return collecting cup are respectively arranged below a clamping water outlet pipe, a transmission water outlet pipe, a lifting water outlet pipe and a zero return water outlet pipe, and the second zero return collecting cup is connected with the first water pipe.
The embodiment of the second aspect of the present invention provides a device for detecting a cold-state check performance of a check combination valve, which is suitable for the method for detecting a cold-state check performance of a check combination valve described in any embodiment of the first aspect, and the device for detecting a cold-state check performance of a check combination valve includes: a fixing device; the check combined valve is arranged on the fixing device and comprises a first incoming water pipe, a valve body and a valve cover in sealing connection with the valve body, the valve body is provided with a valve body cavity, and the first incoming water pipe is communicated with the valve body cavity; the check piston is arranged in the valve body cavity and is suitable for reciprocating motion between the water inlet end and the water discharge end of the valve body cavity; the water outlet pipe assembly comprises a clamping water outlet pipe, a delivery water outlet pipe, a lifting water outlet pipe and a zero return water outlet pipe which are communicated with the cavity of the valve body, and stop valves are arranged on the clamping water outlet pipe, the delivery water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe; the second water inlet pipe is used for being connected with the zero return water outlet pipe; the electromagnetic valve assembly is arranged on the valve cover and comprises a clamping electromagnetic valve head, a transmission electromagnetic valve head and a lifting electromagnetic valve head which are used for controlling the water inlet and outlet of the water outlet pipe assembly; the water outlet collecting device is used for respectively collecting the discharged water of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero returning water outlet pipe; and the metering device is used for weighing the discharged water of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe which are collected by the water outlet collecting device.
According to one embodiment of the invention, the fixing device comprises a workbench, and the combination valve is fixedly connected with the workbench;
the water outlet device comprises a workbench, a plurality of water outlet channels are arranged on the workbench, the water outlet channels penetrate through the upper end face and the lower end face of the workbench, and the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero returning water outlet pipe respectively penetrate through the water outlet channels for water drainage.
According to an embodiment of the invention, the effluent collection apparatus comprises: the water pipe zero return device comprises a clamping collecting cup, a transmission collecting cup, a lifting collecting cup, a first zero return collecting cup and a second zero return collecting cup, wherein the clamping collecting cup, the transmission collecting cup, the lifting collecting cup and the first zero return collecting cup are respectively arranged below a clamping water outlet pipe, a transmission water outlet pipe, a lifting water outlet pipe and a zero return water outlet pipe, and the second zero return collecting cup is connected with the first water pipe.
The method for detecting the cold-state check performance of the check combined valve provided by the embodiment of the first aspect of the invention realizes the function detection and the minimum driving differential pressure and internal leakage measurement of the check combined valve in the cold-state working state, obtains the key working parameters of the check combined valve, solves the design verification problem of the check combined valve, and ensures the reliable and safe operation of the check combined valve. And the engineering application of the control rod built-in water pressure driving technology is met, and reference is provided for engineering design verification of combination valve detection in other industrial fields.
Drawings
Fig. 1 is a schematic flow chart of a method for detecting cold check performance of a check combination valve according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for detecting cold check performance of a check combination valve according to an embodiment of the present invention.
The reference numbers illustrate:
1. a check performance detection device of the check combination valve in a cold state; 10. a valve body; 101. a valve body chamber; 1011. a water inlet end; 102. clamping the water outlet pipe; 103. a delivery water outlet pipe; 104. a first return zero water outlet pipe; 105. lifting the water outlet pipe; 106. a check piston; 20. a valve cover; 30. a solenoid valve assembly; 40. a first water supply pipe; 50. a work table; 60. clamping the collection cup; 70. a transfer collection cup; 80. returning to zero to collect the cup; 90. the collection cup is lifted.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1, an embodiment of a first aspect of the present invention provides a method for detecting a cold check performance of a check combination valve, including: step S100: the tested non-return combination valve is arranged on the combination valve cold-state performance detection device and is connected with a first water inlet pipe and a power supply circuit of the electromagnetic valve head.
The device has the advantages that the tested check combination valve is installed and fixed on the check combination valve cold-state performance detection device, the installation stability of the tested check combination valve is guaranteed, the stability and the accuracy of the check combination valve cold-state performance detection can be guaranteed, the first water pipe and the electromagnetic valve head power supply line are connected with the check combination valve, the preparation work of the check combination valve performance detection is completed, and the performance detection is guaranteed to be effectively carried out.
Step S102: and water outlet collecting devices are respectively arranged below the clamping water outlet pipe, the delivery water outlet pipe, the lifting water outlet pipe and the zero returning water outlet pipe which supply water to the driving mechanism.
The water outlet collecting device is used for collecting water discharged by the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe respectively, is convenient for centralized treatment of water, and is convenient for weighing and measuring so as to determine the water outlet flow of each water outlet pipe.
Step S104: the first water pipe supplies water to finish normal function detection and normal internal leakage measurement of the tested non-return combination valve.
Wherein, the normal function detection and the normal internal leakage measurement of the combination check valve to be tested specifically include:
and step S1040, respectively operating the clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head of the tested non-return combination valve to switch on and off, and detecting the on-off and flow of water flow of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe.
The clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head of the tested check electromagnetic valve are controlled to be powered on or powered off respectively, and the on-off and the flow of water flow in each water outlet pipe can be visually detected, so that the function detection of a single electromagnetic valve head can be realized.
Step S1042: the on-off programs of the clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head are operated according to the step-up and step-down of the driving mechanism respectively, and the on-off and flow of water flow of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe are detected.
Step S1044: the first water pipe supplies water to enable the tested check combination valve to be in a power-off state, collects the discharged water amount of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the return-to-zero water outlet pipe, and respectively weighs the discharged water amount to obtain the internal leakage amount of the tested check combination valve.
The driving mechanism has the function of realizing the control rod step-up and step-down operation, the on-off programs of the clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head of the tested combination valve are respectively operated according to the step-up and step-down modes of the driving structure, and the on-off and flow of the discharged water flow of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe can be detected through the visual inspection mode, so that the detection of the step-up operation function of the combination valve is completed.
Step S106: the check valve is installed on the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe respectively and is in a closed state, the check valve of the zero return water outlet pipe is connected with the second water inlet pipe and supplies water, the water outlet collecting device is connected with the first water inlet pipe, the check valve of the zero return water outlet pipe is opened, and the check function of the tested check combination valve is visually detected.
Through at the centre gripping outlet pipe, the transmission outlet pipe, promote the outlet pipe and return zero to install the stop valve on the outlet pipe and make it be in the closed condition, and will return zero the stop valve on the outlet pipe and connect the second water pipe, open the stop valve on the outlet pipe that returns zero, the second water pipe supplies high pressure water, water accessible returns zero water pipe and gets into the valve body intracavity of contrary combination valve in order to drive contrary piston realization contrary function of ending, and then the accessible detects the contrary function of ending of contrary combination valve of ending visually.
Step S108: the method comprises the steps of obtaining the minimum driving differential pressure for realizing the check function of the tested check combination valve, selecting the minimum driving differential pressure and the rated working condition of the tested check combination valve, collecting the discharged water quantity of a first incoming water pipe by using a water outlet collecting device, and weighing the discharged water quantity to obtain the internal leakage quantity of the check combination valve.
Wherein, it specifically includes to obtain the minimum drive differential pressure that realizes being surveyed contrary combination valve check function:
step S1080: and adjusting the water supply pressure of the second water supply pipe, and recording the minimum driving water pressure of a check piston for driving the check combination valve to plug the water inlet end of the valve body cavity so as to determine the minimum driving differential pressure.
The check piston of the check combination valve can move up and down in the valve cavity, when the check piston is plugged at the water inlet end of the valve cavity, water can be prevented from entering the first water inlet pipe from the valve cavity when the electromagnetic valve head is powered off, namely the check piston is driven to plug the water inlet end of the valve cavity, the check function of the check combination valve can be realized, the water supply pressure of the second water inlet pipe is repeatedly adjusted, the minimum driving water pressure when the check piston is driven to plug the water inlet end is recorded, and the difference value between the minimum driving water pressure and the pressure in the pressure container is the minimum driving differential pressure. And selecting the minimum driving differential pressure and the rated working condition of the tested non-return combined valve, collecting the discharged water amount of the first water pipe by using a water outlet collecting device, and weighing the discharged water amount, so that the detection of the internal leakage amount of the tested non-return combined valve can be realized.
According to one embodiment of the present invention, the collection time period for collecting the discharged water amount of the first incoming water pipe using the discharged water collecting means is not less than half an hour.
The water discharge amount of each water outlet pipe (namely, the water outlet pipe is clamped, the water outlet pipe is transferred, the water outlet pipe is lifted and the water outlet pipe is returned to zero) is collected for not less than half an hour, the water in each water outlet pipe is ensured to be completely discharged, and the accuracy of measuring the internal leakage amount of the check combination valve is improved.
According to an embodiment of the present invention, further comprising: step S110: and repeating the step S106 at least three times to calibrate the check function detection of the tested check combination valve.
In order to ensure the accuracy of the check function detection data of the tested check combination valve, the step S106 can be repeated at least three times, and the inaccurate measurement caused by accidental events can be prevented by recording a plurality of groups of measurement data, so that the measurement data are more accurate and reliable.
According to an embodiment of the present invention, further comprising: step S112: and repeating the step S108 at least three times to calibrate the detection of the internal leakage amount of the tested non-return combination valve.
In order to ensure the accuracy of the internal leakage detection data of the tested check combination valve, the step S108 can be repeated at least three times, and the inaccuracy of the measurement caused by the accidental events can be prevented by recording a plurality of groups of measurement data, so that the measurement data can be more accurate and reliable.
According to one embodiment of the invention, the effluent collection apparatus comprises: the clamping collecting cup, the transmission collecting cup, the lifting collecting cup and the first return-to-zero collecting cup are respectively arranged below the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the return-to-zero water outlet pipe, and the second return-to-zero collecting cup is connected with the first water inlet pipe.
Of course, the effluent collecting means may be a water collecting member such as a plurality of collecting boxes.
As shown in fig. 2, a device 1 for detecting cold-state check performance of a check combination valve according to a second embodiment of the present invention is applicable to a method for detecting cold-state check performance of a check combination valve according to any one of the embodiments of the first aspect, where the device 1 for detecting cold-state check performance of a check combination valve includes: a fixing device; the check combined valve is arranged on the fixing device and comprises a first incoming water pipe 40, a valve body 10 and a valve cover 20 which is hermetically connected with the valve body 10, the valve body 10 is provided with a valve body cavity 101, and the first incoming water pipe 40 is communicated with the valve body cavity 101; a check piston 106 disposed within the valve body chamber 101 and adapted to reciprocate between a water intake end 1011 and a water discharge end of the valve body chamber 101; the water outlet pipe assembly comprises a clamping water outlet pipe 102, a transmission water outlet pipe 103, a lifting water outlet pipe 105 and a zero return water outlet pipe 104 which are communicated with the valve body cavity 101, and stop valves are arranged on the clamping water outlet pipe 102, the transmission water outlet pipe 103, the lifting water outlet pipe 105 and the zero return water outlet pipe 104; the second water inlet pipe is used for being connected with the zero return water outlet pipe 104; the electromagnetic valve assembly 30 is arranged on the valve cover 20 and comprises a clamping electromagnetic valve head, a transmission electromagnetic valve head and a lifting electromagnetic valve head which are used for controlling the water inlet and outlet of the water outlet pipe assembly; the water outlet collecting device is used for respectively collecting the discharged water of the clamping water outlet pipe 102, the delivery water outlet pipe 103, the lifting water outlet pipe 105 and the zero returning water outlet pipe 104; and the metering device is used for weighing the discharged water which is collected by the discharged water collecting device and is clamped with the water outlet pipe 102, the delivery water outlet pipe 103, the lifting water outlet pipe 105 and the zero returning water outlet pipe 104.
The device 1 for detecting the cold check performance of the check combination valve provided by the embodiment of the second aspect of the invention comprises a fixing device, the check combination valve, a check piston 106, a water outlet pipe assembly, a second water inlet pipe, an electromagnetic valve assembly 30 and a water outlet collecting device. Wherein, the check combination valve is arranged on the fixing device, the check combination valve comprises a valve body 10 and a valve cover 20 hermetically connected with the valve body 10, the valve cover 20 is provided with an electromagnetic valve assembly 30, a valve body cavity 101 is arranged in the valve body 10, a check piston 106 is arranged in the valve body cavity 101 and can reciprocate up and down in the valve body cavity 101 to realize the blocking of the water inlet end 1011 or the water outlet end of the valve body cavity 101, when the check piston 106 is blocked at the water inlet end 1011, the check function of the check combination valve can be realized to prevent water from flowing out of the first water inlet pipe 40, when the check piston 106 is blocked at the water outlet end, the water can be prevented from being discharged out of the valve body 10 from the water outlet end when the first water inlet pipe 40 supplies water, the electromagnetic valve assembly 30 can realize the on-off of each water flow, further the normal performance detection of the check combination valve can be realized, the second water inlet pipe is used for supplying water to the zero return water outlet pipe 104, so as to drive the check piston 106 to be blocked at the water inlet end 1011 of the valve body cavity 101 by water pressure, and the check performance of the check combination valve can be detected.
According to one embodiment of the present invention, the fixing device includes a worktable 50, and the combination valve is fixedly connected with the worktable 50; the workbench 50 is provided with a plurality of water outlet channels, the water outlet channels penetrate through the upper end face and the lower end face of the workbench 50, and the clamping water outlet pipe 102, the delivery water outlet pipe 103, the lifting water outlet pipe 105 and the zero return water outlet pipe 104 respectively penetrate through the water outlet channels for water drainage.
The fixing device comprises a workbench 50, and the workbench 50 is fixedly connected (such as bolted connection) with the valve body 10 of the combination valve to ensure the stability of the installation of the combination valve and further ensure the stable performance of the cold-state performance detection of the combination valve. Through setting up a plurality of outlet channels on workstation 50 for centre gripping outlet pipe 102, pass outlet pipe 103, promote outlet pipe 105 and return to zero outlet pipe 104 can pass a plurality of outlet channels and in order to carry out the drainage, guarantee that the water can collect and measure in each outlet pipe.
According to one embodiment of the invention, the effluent collection apparatus comprises: the clamping collecting cup 60, the transfer collecting cup 70, the lifting collecting cup 90, the first return-to-zero collecting cup 80 and the second return-to-zero collecting cup (not shown in the figure), wherein the clamping collecting cup 60, the transfer collecting cup 70, the lifting collecting cup 90 and the first return-to-zero collecting cup 80 are respectively arranged below the clamping water outlet pipe 102, the transfer water outlet pipe 103, the lifting water outlet pipe 105 and the return-to-zero water outlet pipe 104, and the second return-to-zero collecting cup is connected with the first incoming water pipe 40.
Of course, the water outlet collecting device may also be a water collecting device such as a water outlet collecting box disposed below the clamping water outlet pipe 102, the delivery water outlet pipe 103, the lifting water outlet pipe 105 and the zero-returning water outlet pipe 104, and the description thereof is omitted.
The method for detecting the cold-state check performance of the check combined valve provided by the embodiment of the first aspect of the invention realizes the function detection and the minimum driving differential pressure and internal leakage measurement of the check combined valve in the cold-state working state, obtains the key working parameters of the check combined valve, solves the design verification problem of the check combined valve, and ensures the reliable and safe operation of the check combined valve. And the engineering application of the control rod built-in water pressure driving technology is met, and reference is provided for engineering design verification of combination valve detection in other industrial fields.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A method for detecting cold-state check performance of a check combined valve is characterized by comprising the following steps:
s100: installing the tested non-return combined valve on a combined valve cold-state performance detection device, and connecting a first water inlet pipe with a power supply circuit of an electromagnetic valve head;
s102: a water outlet collecting device is respectively arranged below a clamping water outlet pipe, a transmission water outlet pipe, a lifting water outlet pipe and a zero returning water outlet pipe which supply water to the driving mechanism;
s104: the first water pipe supplies water to finish normal function detection and normal internal leakage measurement of the tested non-return combination valve;
s106: respectively installing stop valves on the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe and enabling the stop valves to be in a closed state, connecting the stop valve of the zero return water outlet pipe with a second water inlet pipe and supplying water, enabling a water outlet collecting device to be connected with the first water inlet pipe, opening the stop valve of the zero return water outlet pipe, and visually detecting the check function of the tested check combination valve;
s108: acquiring a minimum driving differential pressure for realizing the check function of the tested check combined valve, selecting the minimum driving differential pressure and the rated working condition of the tested check combined valve, collecting the discharged water quantity of the first incoming water pipe by using the water outlet collecting device, and weighing the discharged water quantity to obtain the internal leakage quantity of the tested check combined valve;
the normal function detection and normal internal leakage measurement of the check combined valve specifically comprise:
s1040, respectively operating the clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head of the tested non-return combination valve to switch on and off, and detecting the on-off and flow of water flow of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe;
s1042: the on-off programs of the clamping electromagnetic valve head, the transmission electromagnetic valve head and the lifting electromagnetic valve head are respectively operated according to the step-up and step-down of a driving mechanism, and the on-off and flow of water flow of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe are detected;
s1044: the first water pipe supplies water, so that the tested check combination valve is in a power-off state, the discharged water quantity of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the return-to-zero water outlet pipe is collected, and the discharged water quantity is weighed respectively to obtain the internal leakage quantity of the tested check combination valve.
2. The method for detecting the cold check performance of the check combination valve according to claim 1, wherein the obtaining of the minimum driving differential pressure for realizing the check function of the tested check combination valve specifically comprises:
s1080: and adjusting the water supply pressure of the second water supply pipe, and recording the minimum driving water pressure of a check piston for driving the check combination valve to plug the water inlet end of the valve body cavity so as to determine the minimum driving differential pressure.
3. The method for detecting the cold check performance of the check combination valve according to claim 1,
and the collection time for collecting the discharged water quantity of the first incoming water pipe by adopting the water outlet collection device is not less than half an hour.
4. The method for detecting the cold check performance of the check combination valve according to claim 1, further comprising the following steps:
step S110: and repeating the step S106 at least three times to calibrate the check function detection of the tested check combination valve.
5. The method for detecting the cold check performance of the check combination valve according to claim 1, further comprising the following steps:
step S112: and repeating the step S108 at least three times to calibrate the detection of the internal leakage amount of the tested non-return combination valve.
6. The method for detecting the cold check performance of the check combination valve according to claim 1,
the effluent collection device comprises: the water pipe zero return device comprises a clamping collecting cup, a transmission collecting cup, a lifting collecting cup, a first zero return collecting cup and a second zero return collecting cup, wherein the clamping collecting cup, the transmission collecting cup, the lifting collecting cup and the first zero return collecting cup are respectively arranged below a clamping water outlet pipe, a transmission water outlet pipe, a lifting water outlet pipe and a zero return water outlet pipe, and the second zero return collecting cup is connected with the first water pipe.
7. A check performance detection device for a cold check of a check combination valve, which is suitable for the check performance detection method for the cold check of the check combination valve in any one of claims 1 to 6, and is characterized in that the check performance detection device for the cold check of the check combination valve comprises:
a fixing device;
the check combined valve is arranged on the fixing device and comprises a first incoming water pipe, a valve body and a valve cover in sealing connection with the valve body, the valve body is provided with a valve body cavity, and the first incoming water pipe is communicated with the valve body cavity;
the check piston is arranged in the valve body cavity and is suitable for reciprocating motion between the water inlet end and the water discharge end of the valve body cavity;
the water outlet pipe assembly comprises a clamping water outlet pipe, a delivery water outlet pipe, a lifting water outlet pipe and a zero return water outlet pipe which are communicated with the cavity of the valve body, and stop valves are arranged on the clamping water outlet pipe, the delivery water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe;
the second water inlet pipe is used for being connected with the zero return water outlet pipe;
the electromagnetic valve assembly is arranged on the valve cover and comprises a clamping electromagnetic valve head, a transmission electromagnetic valve head and a lifting electromagnetic valve head which are used for controlling the water inlet and outlet of the water outlet pipe assembly;
the water outlet collecting device is used for respectively collecting the discharged water of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero returning water outlet pipe;
and the metering device is used for weighing the discharged water of the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero return water outlet pipe which are collected by the water outlet collecting device.
8. The check performance detection device of the check combination valve in a cold state according to claim 7,
the fixing device comprises a workbench, and the combination valve is fixedly connected with the workbench;
the water outlet device comprises a workbench, a plurality of water outlet channels are arranged on the workbench, the water outlet channels penetrate through the upper end face and the lower end face of the workbench, and the clamping water outlet pipe, the transmission water outlet pipe, the lifting water outlet pipe and the zero returning water outlet pipe respectively penetrate through the water outlet channels for water drainage.
9. The check performance detection device of the check combination valve in a cold state according to claim 7 or 8,
the effluent collection device comprises: the water pipe zero return device comprises a clamping collecting cup, a transmission collecting cup, a lifting collecting cup, a first zero return collecting cup and a second zero return collecting cup, wherein the clamping collecting cup, the transmission collecting cup, the lifting collecting cup and the first zero return collecting cup are respectively arranged below a clamping water outlet pipe, a transmission water outlet pipe, a lifting water outlet pipe and a zero return water outlet pipe, and the second zero return collecting cup is connected with the first water pipe.
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