A detection device and a detection method thereof

Abstract

The application belongs to the technical field of water heaters, and specifically discloses a detection device and a detection method thereof. The detection device comprises a support seat, a pressing part, a detection element and a controller assembly. The support seat has a detection space for placing a heating element. The support seat has a flow channel for the medium to pass through. The flow channel can be in sealed communication with one end of the heating element. The medium is a pressure medium, a heating medium or a cooling medium. The pressing part is configured to seal and press the other end of the heating element. The detection element is arranged on the support seat and is used for detecting the pressure or temperature in the heating element. The controller assembly is fixedly arranged on the support seat. The controller assembly is electrically connected with the detection element and the pressing part respectively. The support seat and the pressing part seal the two ends of the heating element respectively, and the flow channel is in communication with the inside of the heating element. Different detection media enter the inside of the heating element through the flow channel for detection, so that the performance detection of the heating element is realized, and the problem of single detection function of the detection device of the heating element is solved.

Description

Technical Field

[0001] This invention relates to the field of water heater technology, and in particular to a testing device and its testing method. Background Technology

[0002] The heating elements in storage water heaters mainly use stainless steel heating tubes, PTC heating tubes, ceramic heating tubes, or bare wire heating tubes, but the energy conversion rate is relatively low.

[0003] Existing technologies provide dual-opening heating elements such as thick-film heating elements, nano-quartz tube heating elements, and nano-stainless steel heating elements, all of which have good energy conversion rates. However, they are not used in storage water heaters. If they are to be applied to storage water heaters, it is necessary to test their pressure resistance and thermal shock resistance. At present, the application requirements for dual-opening heating elements are only thermal shock resistance testing, not pressure resistance testing. Existing testing devices and methods are limited in function and do not have the ability to test multiple performance characteristics. Summary of the Invention

[0004] One of the technical problems solved by this invention is to provide a detection device that can effectively solve the problem of the limited detection function of current detection devices for double-opening heating elements.

[0005] The second technical problem solved by this invention is to provide a method for testing pressure bearing capacity, which can perform pressure bearing capacity testing on a double-opening heating element using a testing device.

[0006] The third technical problem solved by this invention is to provide a method for testing thermal shock performance, which can perform thermal shock performance testing on a double-opening heating element on a testing device.

[0007] The fourth technical problem solved by this invention is to provide a method for testing dry-burning performance, which can perform dry-burning performance testing on a double-opening heating element on a testing device.

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A testing device for performance testing of a double-opening heating element includes a support base, a clamping member, a testing element, and a controller assembly. The support base has a testing space for placing the heating element and a flow channel for a medium to pass through. The flow channel is capable of sealing and communicating with one end of the heating element. The medium is a pressure medium, a heating medium, or a cooling medium. The clamping member is configured to seal and clamp the other end of the heating element. The testing element is disposed on the support base and is used to detect the pressure or temperature inside the heating element. The controller assembly is fixedly disposed on the support base and is electrically connected to the testing element and the clamping member, respectively.

[0010] Compared with the prior art, the detection device of the present invention has the following advantages: the flow channel on the support base is sealed and connected to the opening at one end of the double-opening heating element, and the clamping member seals and presses the opening at the other end of the double-opening heating element, so that the double-opening heating element is sealed and set in the detection device. Different detection media can enter the heating element through the flow channel to perform corresponding detection according to actual detection needs. Thus, it is possible to perform pressure bearing performance testing and thermal shock performance testing of the double-opening heating element on one detection device. In addition, when no medium is introduced, the dry burning performance testing of the heating element can be performed directly, thereby solving the problem of the single detection function of the detection device for double-opening heating elements.

[0011] In one embodiment, the detection device further includes a drive member fixedly connected to the support base and electrically connected to the controller assembly, the drive member being configured to drive the clamping member to move within the detection space.

[0012] In one embodiment, a guide member is further included, with both ends of the guide member connected to the support base, and a guide hole is provided on the clamping member for the guide member to pass through, and the clamping member is slidably disposed on the guide member.

[0013] In one embodiment, the support base includes a base body, which includes a bottom plate, a top plate, and side plates. The two ends of the side plates are fixedly connected to the bottom plate and the side plates, respectively. The bottom plate, the top plate, and the side plates together form a detection space, and a flow channel is set inside the bottom plate.

[0014] In one embodiment, the support base further includes a connector having a connection channel, the connector being fixedly connected to the support base, and the connection channel of the connector communicating with the flow channel of the support base.

[0015] In one embodiment, the detection device further includes a control valve assembly electrically connected to a controller assembly, the control valve assembly being configured to selectively connect to a media supply device, the media supply device including a cooling media supply device, a pressure media supply device, and a heating media supply device.

[0016] In one embodiment, the detection device further includes a retainer disposed within the detection space and fixedly mounted on the inner sidewall of the support base, the retainer having a groove for supporting and limiting the heating element.

[0017] The second technical problem mentioned above is solved by the following technical solution:

[0018] A method for testing pressure resistance, using a testing device employing any of the above-mentioned technical solutions, includes the following steps: installing a heating element into the testing space of a support base, such that one end of the heating element is sealed and connected to the support base, and the other end of the heating element is sealed and abutted against a clamping element; moving the clamping element to lock both ends of the heating element to the support base and the clamping element respectively; introducing a pressure medium into the internal space of the heating element to pressurize the heating element until the pressure reaches a preset pressure; determining whether the heating element is damaged; if so, obtaining and storing the instantaneous pressure at the time of damage; if not, starting pressure holding after the pressure reaches the preset pressure, obtaining and storing the pressure of the heating element during the pressure holding process.

[0019] The third technical problem mentioned above is solved by the following technical solution:

[0020] A method for testing thermal shock performance, using a testing device employing any of the above-mentioned technical solutions, includes the following steps: installing a heating element into the testing space of a support base, sealing one end of the heating element with the support base and sealing the other end of the heating element with a clamping element; moving the clamping element to lock both ends of the heating element to the support base and the clamping element respectively; heating the heating element until it reaches a first preset temperature; cooling the heating element; and if the heating element is damaged, obtaining and storing the instantaneous temperature value at the time of damage.

[0021] In one embodiment, heating the heating element includes heating the heating element by introducing a heating medium into the internal space of the heating element, or heating the heating element by turning on a heating element.

[0022] In one embodiment, cooling the heating element includes cooling the heating element by introducing a cooling medium into the internal space of the heating element or cooling the outer surface of the heating element.

[0023] In one embodiment, heating and cooling are cyclically repeated until a preset number of heating and cooling cycles are reached.

[0024] The fourth technical problem mentioned above is solved by the following technical solution:

[0025] A method for testing dry-burning performance, wherein the testing device using the above-mentioned technical solution includes the following testing method:

[0026] Install the heating element into the detection space of the support base, so that one end of the heating element is sealed and connected to the support base, and the other end of the heating element is sealed and abutted against the clamping element.

[0027] Move the clamping component to lock both ends of the heating element to the support base and the clamping component respectively;

[0028] The heating element is heated for a preset time and at a second preset temperature;

[0029] After heating is complete, the heating element is cooled.

[0030] During the heating process, cooling process, and after cooling, observe whether the heating element is damaged, and obtain the voltage, current, and resistance values ​​of the heating element after cooling. Attached Figure Description

[0031] Figure 1 This is an exploded view of the detection device provided in the embodiments of the present invention;

[0032] Figure 2 This is a schematic diagram of the detection device provided in an embodiment of the present invention;

[0033] Figure 3 This is a flowchart of the main steps of the pressure bearing performance testing method provided in this embodiment of the invention;

[0034] Figure 4 This is a detailed flowchart of the pressure bearing performance testing method provided in the embodiments of the present invention;

[0035] Figure 5 This is a flowchart of the main steps of the thermal shock performance testing method provided in this embodiment of the invention;

[0036] Figure 6 This is one of the detailed flowcharts of the thermal shock performance testing method provided in the embodiments of the present invention;

[0037] Figure 7 This is the second detailed flowchart of the thermal shock performance testing method provided in this embodiment of the invention;

[0038] Figure 8 This is the third detailed flowchart of the thermal shock performance testing method provided in this embodiment of the invention;

[0039] Figure 9 This is the fourth detailed flowchart of the thermal shock performance testing method provided in this embodiment of the invention;

[0040] Figure 10 This is a flowchart of the main steps of the dry-burning performance testing method provided in the embodiments of the present invention.

[0041] Label Explanation:

[0042] 1. Support base; 11. Base body; 111. Base plate; 112. Side upright plate; 113. Top plate; 12. First sealing element;

[0043] 2. Controller components; 21. Controller body; 22. Mounting plate;

[0044] 3. Heating element; 31. Heating body; 32. Wire;

[0045] 4. Cage; 41. Groove;

[0046] 5. Guide components;

[0047] 6. Clamping components;

[0048] 7. Driving components;

[0049] 8. Connectors;

[0050] 9. Detection element. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] like Figures 1-2As shown, this testing device is used for performance testing of a double-opening heating element 3. The device includes a support base 1, a clamping member 6, and a testing element 9. The support base 1 has a testing space for placing the heating element 3 and includes a seat body 11 with a flow channel for a medium to pass through. The medium can be a pressure medium, a heating medium, or a cooling medium, thus enabling pressure testing, thermal shock testing, and dry-burning performance testing to be performed separately within a single testing device. The flow channel is sealed and connected to the opening at one end of the double-opening heating element 3. The clamping member 6 is configured to seal and clamp the opening at the other end of the heating element 3. Thus, the support base 1 and the clamping member 6, located in the testing space of the support base 1, jointly achieve a seal at both ends of the double-opening heating element 3. The testing element 9 is used to detect the pressure or temperature within the heating element 3 to obtain relevant data during testing.

[0056] The flow channel on the support base 1 is sealed and connected to the opening at one end of the double-opening heating element 3. The clamping element 6 seals and presses the opening at the other end of the double-opening heating element 3, so that the double-opening heating element 3 is sealed in the testing device. Different testing media can enter the heating element 3 through the flow channel to perform corresponding tests according to actual testing needs. This realizes that the pressure bearing performance test and thermal shock performance test of the double-opening heating element 3 can be performed separately on one testing device. In addition, when no medium is introduced, the dry burning performance test of the heating element 3 can be performed directly, thus solving the problem of the single testing function of the testing device for the double-opening heating element 3.

[0057] Understandably, this testing device seals the heating element 3 with two openings via the support base 1 and the clamping element 6. This allows for the supply of different media, such as pressure media, heating media, or cooling media, into the heating element 3 through the flow channel provided in the support base 1 to perform various performance tests, depending on specific testing requirements. Alternatively, the flow channel in the support base 1 can be closed to prevent the heating element 3 from being filled with any media, thus enabling other types of performance tests.

[0058] For example, the pressure medium can be a gas or a liquid; in this embodiment, a liquid is preferred to better meet the detection requirements. The heating medium can be a high-temperature gas or a high-temperature liquid; in this embodiment, a high-temperature liquid is preferred to better meet the detection requirements. The cooling medium can be a low-temperature gas or a low-temperature liquid; in this embodiment, a low-temperature liquid is preferred to better meet the detection requirements.

[0059] It should be noted that the specific structures and methods for the detection device for the entry or exit of the pressure medium, heating medium, and cooling medium in this embodiment are all prior art and will not be described further here. For example, the gas that can be used as the pressure medium, the high-temperature gas that can be used as the heating medium, and the low-temperature gas that can be used as the cooling medium can be the same gas or different gases. As another example, the liquid that can be used as the pressure medium, the high-temperature liquid that can be used as the heating medium, and the low-temperature liquid that can be used as the cooling medium can be the same liquid or different liquids. The concept of high-temperature gas is relative to low-temperature gas, and those skilled in the art can determine the temperature of the high-temperature gas and the low-temperature gas according to actual detection requirements. The concept of high-temperature liquid is relative to low-temperature liquid, and those skilled in the art can determine the temperature of the high-temperature liquid and the low-temperature liquid according to actual detection requirements.

[0060] Specifically, in this embodiment, for example, the temperature of the high-temperature gas can be 100℃, 95℃, 90℃, 85℃, 80℃, 75℃, 70℃, 65℃, 60℃, or 55℃. The temperature of the low-temperature gas can be -20℃, -15℃, -10℃, -5℃, 0℃, 5℃, 10℃, 15℃, 20℃, 25℃, 30℃, 35℃, or 40℃. The temperature of the high-temperature liquid can be 130℃, 125℃, 120℃, 115℃, 110℃, 105℃, 100℃, 95℃, 90℃, 85℃, 80℃, 75℃, 70℃, 65℃, 60℃, or 55℃, and the temperature of the low-temperature liquid can be -20℃, -15℃, -10℃, -5℃, 0℃, 5℃, 10℃, 15℃, 20℃, 25℃, 30℃, 35℃, or 40℃.

[0061] Optionally, the detection device further includes a first sealing element 12, which is fixedly connected to the support base 1. The connection method between the first sealing element 12 and the support base 1 can be adhesive, screw, or snap-fit. In this embodiment, adhesive is preferred. The first sealing element 12 abuts against one end of the heating element 3. The first sealing element 12 has an opening that communicates with the flow channel.

[0062] Optionally, the detection device further includes a second seal, which is disposed on the lower surface of the clamping member 6. The connection between the second seal and the clamping member 6 can be adhesive, screwed, or snap-fit. In this embodiment, adhesive is preferred. The second seal abuts against the other end of the heating member 3. The first seal 12 and the second seal work together to seal both ends of the heating member 3. Meanwhile, to reduce the overall complexity of the detection device and improve interchangeability and assembly convenience, the second seal and the first seal 12 can be set to the same type of seal.

[0063] Specifically, during various performance tests on the heating element 3, the heating element 3 is pre-installed to mate with the first sealing element 12. The second sealing element, fixedly connected to the clamping element 6, gradually comes into contact with the heating element 3 as the clamping element 6 moves towards the first sealing element 12. With further movement of the clamping element 6 towards the first sealing element 12, both ends of the heating element 3 compress the first sealing element 12 and the second sealing element, causing deformation of both. The two ends of the heating element 3 then abut and embed into the first sealing element 12 and the second sealing element, thereby achieving a seal.

[0064] Specifically, the support base 1 includes a base body 11, which includes a base plate 111, a top plate 113, and side uprights 112. The base plate 111 and the top plate 113 are arranged parallel to each other at a certain distance. The two ends of the side uprights 112 are fixedly connected to the base plate 111 and the top plate 113, respectively. The connection method can be welding, snap-fitting, or bolting, preferably welding. The number of side uprights 112 can be set to 2, 3, or 4. The base plate 111, the top plate 113, and the side uprights 112 together form a detection space. A flow channel is provided on the base plate 111. In this embodiment, the base body 11 of the support base 1 is arranged in a U-shape to facilitate the placement and removal of the heating element 3.

[0065] Optionally, the number of first seals 12 can be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. Multiple first seals 12 can be arranged in a circular array, rectangular array, uniformly distributed in a single row, or with unequal spacing in a single row. Correspondingly, the number of outlets of the flow channels on the support base 1 can be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. Multiple flow channel outlets can be arranged in a circular array, rectangular array, uniformly distributed in a single row, or with unequal spacing in a single row. Simultaneously, the number of second seals can be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. Multiple second seals can be arranged in a circular array, rectangular array, uniformly distributed in a single row, or with unequal spacing in a single row. The arrangement of multiple first seals 12 allows the detection device to simultaneously detect multiple heating elements 3, improving detection efficiency.

[0066] Furthermore, such as Figure 1As shown, the detection device also includes a retainer 4, which is disposed within the detection space and fixedly mounted on the inner sidewall of the support base 1. The retainer 4 is used to support and limit the heating element 3. Specifically, the retainer 4 is provided with grooves 41 for supporting and limiting the heating element 3, and one heating element 3 is placed in each groove 41. In this embodiment, the shape of the grooves 41 is U-shaped or semi-circular. The number of grooves 41 is 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. Multiple grooves 41 can be arranged in a circular array, a rectangular array, a single row evenly distributed, or a single row with unequal spacing. By providing multiple grooves 41 on the retainer 4, multiple heating elements 3 can be pre-placed in the grooves 41, so that the relative positions of the multiple heating elements 3 are consistent with the relative positions of the multiple corresponding first sealing elements 12. This achieves rapid positioning of multiple heating elements 3.

[0067] Optionally, the detection device further includes a drive component 7, which is fixedly connected to the support base 1. The drive component 7 is configured to drive the clamping component 6 to move within the detection space. The body of the drive component 7 is fixedly connected to the support base 1, and the actuating part of the drive component 7 is fixedly connected to the clamping component 6. The direction of movement of the actuating part of the drive component 7 is consistent with the axis of the heating element 3. The drive component 7 can be a drive cylinder, a drive hydraulic cylinder, an electric push rod, or a linear motor. Driving the clamping component 6 with the drive component 7 replaces manual adjustment of the clamping component 6, and also achieves the limitation of the clamping component 6 due to the characteristics of the drive component 7 itself, eliminating the need for an additional limiting structure on the support base 1. The principle of using the characteristics of the drive component 7 to limit the clamping component 6 is prior art in this field and will not be described further here.

[0068] Optionally, such as Figure 1 As shown, the detection device also includes guide members 5. A guide hole is provided on the clamping member 6 for the guide member to pass through. The guide member 5 passes through the guide hole on the clamping member 6 and is slidably connected to the clamping member 6. Both ends of the guide member 5 are connected to the support base 1. The connection between the clamping member 6 and the support base 1 can be a fixed connection or a rotatable connection. There can be 2, 3, 4, 5, 6, 7, or 8 guide members 5. In this embodiment, to achieve better guiding effect and reduce structural complexity, there are 4 guide members 5, one at each of the four corners of the clamping member 6. The direction of the guide members 5 is consistent with the axial direction of the heating member 3.

[0069] Specifically, as the clamping member 6 moves towards the first seal 12 within the detection space, the distance between the clamping member 6 and the first seal 12 gradually decreases, and both ends of the heating member 3 are sealed and locked with the first seal 12 and the second seal, respectively. During the process of sealing and locking the two ends of the heating member 3 with the first seal 12 and the second seal, both the first seal 12 and the second seal undergo varying degrees of creep. However, since the direction of creep is unpredictable, the accumulation of creep directions of multiple first seals 12 or second seals will cause the heating member 3 to tilt noticeably away from its axis. This will reduce the sealing and locking effect of the first seals 12 and the second seal on the heating member 3, or the sealing and locking effect of the first seals 12 and the second seal on the heating member 3 will be lost. The guide member 5 ensures that the clamping member 6 can only move along the direction of the guide member 5. Even if creep occurs during the sealing and locking process of the first seal 12 and the second seal, the guide 5 still moves along the axis of the heating element 3, so that the creep is overcome and the sealing effect of the first seal 12 and the second seal is guaranteed.

[0070] Optionally, the device also includes a connector 8, which has a connection channel. The connector 8 is fixedly connected to the support base 1, and the connection channel of the connector 8 communicates with the flow channel of the support base 1. The connector 8 has a connection channel for the passage of pressure medium, heating medium, and cooling medium. It is understood that the connector 8 has a connection inlet and a connection outlet. The connection outlet communicates with the flow channel provided on the support base 1, and the connection inlet communicates with the corresponding medium supply device. The connection methods of different medium supply devices and the corresponding pipes or joints connected to the medium supply devices are all prior art and will not be described here. The connection method between the connector 8 and the support base 1 can be welding, screwing, or bonding. In this embodiment, the connection method between the connector 8 and the support base 1 is preferably screwing, so that it is easy to replace the connector 8 when it is damaged, reducing the overall maintenance difficulty of the device.

[0071] Optionally, the detection device further includes a control valve assembly configured to selectively connect the connector 8 to the media supply device, which, as described above, includes a cooling media supply device, a pressure media supply device, and a heating media supply device. Correspondingly, the control valve assembly has a connection outlet, a first connection inlet, a second connection inlet, a third connection inlet, and a normally closed end. The control valve assembly is fixedly connected to the connector 8, and the connection outlet of the control valve assembly communicates with the connection channel of the connector 8. The connection outlet of the control valve assembly is selectively connected to the first connection inlet, the second connection inlet, the third connection inlet, or the normally closed end.

[0072] Specifically, the first connection port, the second connection port, and the third connection port are each connected to a different medium supply device. For example, the first connection port can be connected to a cooling medium supply device, a pressure medium supply device, or a heating medium supply device. The second connection port can be connected to a pressure medium supply device, a heating medium supply device, or a cooling medium supply device. The third connection port can be connected to a heating medium supply device, a cooling medium supply device, or a pressure medium supply device.

[0073] Specifically, the detection end of the detection element 9 is disposed within the connection channel or flow channel. The detection element 9 is connected to the connector 8 or the support base 1. The detection element 9 includes a pressure sensor and a temperature sensor. The temperature sensor and the pressure sensor are used to detect pressure changes or pressure under certain conditions during the pressure resistance test, or temperature changes or temperature values ​​under certain conditions during the thermal shock test.

[0074] It should be noted that the detection element 9 is used to detect the pressure and temperature values ​​during the performance testing of the heating element 3. The corresponding pressure sensor and temperature sensor models and specifications are all existing technologies in the field, and therefore will not be described in detail. It is understood that the installation position of the detection element 9 in this embodiment is exemplary, and technicians can adjust the installation position of the detection element 9 based on the actual testing needs of the project.

[0075] Optionally, the detection device further includes a controller assembly 2, which is fixedly mounted on the support base 1. The controller assembly 2 is electrically connected to the sensor, the drive component 7, the clamping component 6, and the control valve assembly. The controller assembly 2 includes a screen, a controller body 21, and a mounting plate 22. The screen is mounted on the mounting plate 22 and fixedly connected to it. The controller body 21 is disposed within the cavity formed by the screen and the mounting plate 22, and is electrically connected to the screen. The screen is used to display data that the operator needs to visualize according to actual requirements, or the status of the corresponding components electrically connected to the controller assembly 2. The mounting plate 22 is fixedly connected to the support base 1, and the connection method can be bolted or welded. There are buttons on the mounting plate or the screen, which are electrically connected to the controller body 21. By pressing the button, communication can be achieved with the controller body 21, thereby switching different detection modes or sending relevant control commands to the components electrically connected to the controller assembly 2. The method of communicating with the controller by pressing the button is prior art in this field and will not be described here.

[0076] In this embodiment, the controller body 21 can be a centralized or distributed controller. For example, the controller body 21 can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control each component to achieve its function.

[0077] In this embodiment, the connection between the mounting plate 22 and the support base 1 is preferably a bolt connection. The mounting plate 22 has a controller mounting slot for mounting the controller body 21, and the controller body 21 is fixedly installed in the controller mounting slot. The connection between the controller body 21 and the mounting plate 22 can be a bolt connection, adhesive bonding, snap-fit, or welding; in this embodiment, a bolt connection is preferred.

[0078] The controller body 21 is used to receive electrical signals from sensors, record and store the information obtained from the sensors and output it to the screen, send control commands to the drive unit 7 and receive feedback signals from the drive unit 7, and send control commands to the control valve assembly and receive feedback signals from the control valve assembly. Both the drive unit 7 and the control valve assembly have a structure that is electrically connected to the controller assembly 2. The principles and related control programs for driving the drive unit 7 through the controller, driving the control valve assembly through the controller, the drive unit 7 feeding back position information to the actuator, and the control valve assembly feeding back the opening and closing status of the control valve to the actuator are all existing technologies in the art. Different control programs can be selected for control according to different actual application situations, so they will not be described here.

[0079] It should be noted that the pressure medium supply device, heating medium supply device, and cooling medium supply device are all connected to a supply device controller. The supply device controller is used to control the pressure or temperature values ​​of the pressure medium, heating medium, and cooling medium supplied by the pressure medium supply device, heating medium supply device, and cooling medium supply device. The corresponding control functions and control logic of the supply device controller are existing technologies in the art and will not be described here.

[0080] In this embodiment, the detection device has only one flow channel, through which the pressure medium, heating medium, and cooling medium enter and leave the internal space of the heating element. The corresponding pressure medium supply device, heating medium supply device, and cooling medium supply device are all capable of forward supply and reverse extraction. When it is necessary to supply pressure medium, heating medium, or cooling medium to the internal space of the heating element 3, the corresponding pressure medium supply device, heating medium supply device, or cooling medium supply device supplies it to the internal space of the heating element 3. When it is necessary to change the medium supplied to the internal space of the heating element 3 or when it is not necessary to supply medium to the internal space of the heating element 3, the corresponding pressure medium supply device, heating medium supply device, or cooling medium supply device extracts the pressure medium, heating medium, or cooling medium currently present in the internal space of the heating element 3, causing it to leave the internal space of the heating element 3. Devices with both supply and extraction functions are existing technology in this field and will not be described further here. The heating element includes a heating body 31, a wire 32, and a heating film connected to the wire 32. The heating film covers the heating body 31, and the heating body 31 has good thermal conductivity. The temperature of the heating element 3 is monitored by a temperature control element, which is electrically connected to the heating controller. The heating controller is electrically connected to the controller assembly 2 and the supply device controller.

[0081] It should be noted that, in this embodiment, for ease of explanation, the heating controller, controller component 2, and supply device controller are configured to operate independently and be able to transmit data between them. In other embodiments, the heating controller, controller component 2, and supply device controller can be integrated into a single controller to achieve system integration.

[0082] This embodiment also provides a method for testing pressure bearing capacity, which is applied to the testing device provided in this embodiment of the invention.

[0083] like Figure 3 As shown, the pressure-bearing performance testing method includes:

[0084] S11. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0085] S12. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively;

[0086] S13. Allow the pressure medium to enter the internal space of the heating element to pressurize the heating element until the pressure reaches the preset pressure.

[0087] S14. Determine if heating element 3 is damaged;

[0088] S15. If so, obtain and store the instantaneous pressure when the heating element 3 is damaged;

[0089] S16. If not, pressure holding begins after the pressure reaches the preset pressure, and the pressure of the heating element 3 during the pressure holding process is obtained and stored.

[0090] This pressure-bearing performance testing method can be performed directly on the testing device. Therefore, when testing the performance of the heating element 3, other types of performance tests can be performed after the pressure-bearing performance test. Alternatively, the pressure-bearing performance test can be performed after other types of performance tests.

[0091] like Figure 4 As shown, the method specifically includes the following steps:

[0092] S21. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0093] S22. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively.

[0094] S23. Adjust the control valve assembly to connect the pressure medium supply device to the connector 8.

[0095] S24. The pressure medium supply device supplies pressure medium to the internal space of the heating element 3 at a certain pressure.

[0096] S25. Monitor whether the heating element 3 is damaged.

[0097] S26. If the pressure of the pressure medium does not reach the preset pressure, the heating element 3 is damaged; then the pressure sensor detects a sudden drop in pressure and transmits the pressure at this instant to the controller component 2.

[0098] S27. If the pressure of the pressure medium reaches the preset pressure and the heating element 3 is not damaged, the supply device controller controls the pressure medium supply device to maintain the pressure, and the pressure sensor transmits the pressure during the pressure maintenance process to the controller component 2.

[0099] S28, The controller assembly 2 obtains and stores the instantaneous pressure when the heating element 3 is damaged or the pressure during the pressure holding process.

[0100] After the pressure bearing performance test is completed, the corresponding supply device extracts the pressure medium from the internal space of the heating element 3, so that it leaves the internal space of the heating element 3, so as to supply heating medium and / or cooling medium when conducting thermal shock performance test or dry burning performance test, or, depending on the test conditions, not supplying medium to the internal space of the heating element 3.

[0101] This embodiment also provides a method for testing thermal shock performance, which is applied to the testing device provided in this embodiment of the invention.

[0102] like Figure 5 As shown, the thermal shock performance testing methods include:

[0103] S31. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0104] S32. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively.

[0105] S33. Heat the heating element 3 until it reaches the first preset temperature.

[0106] S34. Cool the heating element 3. If the heating element 3 is damaged, obtain and store the instantaneous temperature value of the heating element 3 at the time of damage.

[0107] This thermal shock performance testing method can be performed directly on the testing device, allowing other types of performance tests to be conducted after the thermal shock performance test on the heating element 3. Alternatively, the thermal shock performance test can be conducted after other types of performance tests.

[0108] When heating and cooling are applied internally to the heating element 3, such as Figure 6 As shown, the method specifically includes the following steps:

[0109] S41. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0110] S42. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively;

[0111] S43. Allow the heating medium to enter the internal space of the heating element 3 to heat the heating element 3;

[0112] S44. Monitor whether heating element 3 is damaged during the heating process;

[0113] S45. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage.

[0114] S46. If the heating element 3 is not damaged, allow the cooling medium to enter the internal space of the heating element 3 to cool the heating element 3.

[0115] S47. Whether the heating element 3 is damaged during and after the cooling process;

[0116] S48. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage; if the heating element 3 is not damaged, then step S49 is executed.

[0117] S49. Has the preset number of heating cycles been reached? If yes, stop the test; otherwise, return to step S43.

[0118] It should be noted that technicians can manually operate the controller component 2 to repeat steps S43 to S49 according to actual testing needs. However, in step S49, the process will not automatically return to step S43. The execution of step S43 relies on manual operation rather than automatic control by the controller.

[0119] When external heating of heating element 3 is used, and internal cooling is employed, such as Figure 7 As shown, the method specifically includes the following steps:

[0120] S51. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0121] S52. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively;

[0122] S53, The heating element of the heating element 3 is turned on to heat the heating element 3;

[0123] S54. Monitor whether heating element 3 is damaged during the heating process;

[0124] S55. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage.

[0125] S56. If the heating element 3 is not damaged, allow the cooling medium to enter the internal space of the heating element 3 to cool the heating element 3.

[0126] S57. Whether the heating element 3 is damaged during and after the cooling process;

[0127] S58. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage; if the heating element 3 is not damaged, then step S59 is executed.

[0128] S59. Has the preset number of heating cycles been reached? If yes, stop the test; otherwise, return to step S53.

[0129] It should be noted that technicians can manually operate the controller component 2 to repeat steps S53 to S59 according to actual testing needs. However, in step S59, the system will not automatically return to step S53. The execution of step S53 relies on manual operation rather than automatic control by the controller.

[0130] When heating the inside of the heating element 3 and cooling it externally, such as Figure 8 As shown, the method specifically includes the following steps:

[0131] S61. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0132] S62. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively;

[0133] S63, The heating medium is introduced into the internal space of the heating element 3 to heat the heating element 3;

[0134] S64. Monitor whether heating element 3 is damaged during the heating process;

[0135] S65. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage.

[0136] S66. If the heating element 3 is not damaged, cool the outer surface of the heating element 3;

[0137] S67. Whether the heating element 3 is damaged during and after the cooling process;

[0138] S68. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage; if the heating element 3 is not damaged, step S69 is executed.

[0139] S69. Has the preset number of heating cycles been reached? If yes, stop the test; otherwise, return to step S63.

[0140] It should be noted that technicians can manually operate the controller component 2 to repeat steps S63 to S69 according to actual testing needs. However, in step S69, the process will not automatically return to step S63. The execution of step S63 relies on manual operation rather than automatic control by the controller.

[0141] When external heating and external cooling are used for heating element 3, such as Figure 9 As shown, the method specifically includes the following steps:

[0142] S71. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0143] S72. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively;

[0144] S73, The heating element of the heating element 3 is turned on to heat the heating element 3;

[0145] S74. Monitor whether heating element 3 is damaged during the heating process;

[0146] S75. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage.

[0147] S76. If the heating element 3 is not damaged, cool the outer surface of the heating element 3;

[0148] S77. Whether the heating element 3 is damaged during and after the cooling process;

[0149] S78. If the heating element 3 is damaged, the controller assembly 2 obtains and stores the instantaneous temperature value of the heating element 3 at the time of damage; if the heating element 3 is not damaged, then step S79 is executed.

[0150] S79. Has the preset number of heating cycles been reached? If yes, stop the test; otherwise, return to step S73.

[0151] It should be noted that technicians can manually operate the controller component 2 to repeat steps S73 to S79 ​​according to actual testing needs. However, in step S79, the process will not automatically return to step S73. The execution of step S73 relies on manual operation rather than automatic control by the controller.

[0152] For example, the method of heating the heating element 3 by introducing the heating medium into the internal space of the heating element 3 in the above steps is to adjust the control valve assembly to connect the heating medium supply device to the connector 8, and the heating medium supply device heats the heating medium supplied to the internal space of the heating element 3 until it is heated to the first preset temperature.

[0153] For example, in the above steps, the method of heating the heating element 3 by connecting the heating element 3 to heat the heating element 3 is to connect the circuit of the wire 32 of the heating element 3, so that the heating film of the heating element 3 heats up, and the heating element 3 is heated until it reaches the first preset temperature.

[0154] For example, the method of allowing the cooling medium to enter the internal space of the heating element 3 to cool the heating element 3 in the above steps is to adjust the control valve assembly to connect the cooling medium supply device with the connector 8, so that the cooling medium enters the internal space of the heating element 3 to cool the heating element 3.

[0155] For example, the method for cooling the outer surface of the heating element 3 in the above steps is to place the heating element 3 in a low-temperature space such as a refrigerator, blow low-temperature gas onto the outer surface of the heating element 3, or spray cold water mist onto the outer surface of the heating element 3.

[0156] After the thermal shock performance test is completed, the corresponding supply device extracts the cooling medium from the internal space of the heating element 3, so that it leaves the internal space of the heating element 3, so that other types of media can be supplied when the pressure bearing performance test or dry burning performance test is carried out, or, depending on the test conditions, no medium is supplied to the internal space of the heating element 3.

[0157] This embodiment also provides a method for testing dry-burning performance, which is applied to the testing device provided in this embodiment of the invention.

[0158] like Figure 10 As shown, the dry-burning performance testing method includes:

[0159] S81. Install the heating element 3 into the detection space of the support base 1, so that one end of the heating element 3 is sealed and connected to the support base 1, and the other end of the heating element 3 is sealed and abutted against the clamping element 6.

[0160] S82. Move the clamping member 6 so that both ends of the heating member 3 are locked to the support base 1 and the clamping member 6 respectively.

[0161] S83. The heating element 3 is heated for a preset time and at a second preset temperature.

[0162] S84. After heating is complete, cool the heating element 3.

[0163] S85. During the heating process, cooling process and after cooling, observe whether the heating element 3 is damaged. If the heating element 3 is not damaged during the heating process, cooling process and after cooling, obtain the voltage, current and resistance values ​​of the heating element 3 after cooling.

[0164] This dry-burning performance test method can be performed directly on the testing device. Therefore, when testing the performance of the heating element 3, pressure-bearing performance testing and / or thermal shock performance testing can be performed after the dry-burning performance test. Alternatively, the dry-burning performance test can be performed after the pressure-bearing performance test and / or thermal shock performance test.

[0165] Specifically, when the heating element 3 is heated to the second preset temperature for a preset time, the heating controller disconnects the circuit of the wire 32 of the heating element 3 to interrupt the heating of the heating element 3.

[0166] It should be noted that the voltage, current, and resistance values ​​of the heating element 3 after cooling can be obtained by removing the heating element 3 from the testing device and measuring it with relevant voltage, current, or resistance value testing equipment. Alternatively, the heating element 3 can be measured on the testing device without removing it from the testing device. The relevant voltage, current, or resistance value testing equipment and corresponding testing methods are prior art in this field and will not be described further here.

[0167] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0168] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A detection device for performance detection of a double-opening heating element (3), characterized in that, The application relates to a detection device for a heating element (3), which comprises the following components: a support seat (1) having a detection space for placing the heating element (3), the support seat (1) having a flow channel for a medium, the flow channel being capable of being in sealed communication with one end of the heating element (3), the medium being a pressure medium, a heating medium or a cooling medium; a pressing element (6) arranged in the detection space of the support seat (1), the pressing element (6) being configured to seal and press the other end of the heating element (3); a detection element (9) arranged on the support seat (1) and used for detecting the pressure or temperature in the heating element (3); a controller assembly (2) fixedly arranged on the support seat (1), the controller assembly (2) being electrically connected with the detection element (9) and the pressing element (6) respectively; a driving element (7) fixedly connected with the support seat (1) and electrically connected with the controller assembly (2), the driving element (7) being configured to drive the pressing element (6) to move in the detection space; a guide element (5) having two ends connected with the support seat (1) respectively, the pressing element (6) being provided with a guide hole through which the guide element (5) passes, the pressing element (6) being slidably arranged on the guide element (5); the support seat (1) comprises a seat body (11) including a bottom plate (111), a top plate (113) and a side plate (112), the two ends of the side plate (112) being fixedly connected with the bottom plate (111) and the side plate (112) respectively, the bottom plate (111), the top plate (113) and the side plate (112) jointly forming the detection space, and the flow channel being arranged in the bottom plate (111); the support seat (1) further comprises a connecting element (8) having a connecting channel, the connecting element (8) being fixedly connected with the support seat (1), and the connecting channel of the connecting element (8) being in communication with the flow channel of the support seat (1); a control valve assembly is further included, the control valve assembly being electrically connected with the controller assembly (2) and being configured to selectively connect the connecting element (8) with a medium supply device, the medium supply device including a cooling medium supply device, a pressure medium supply device and a heating medium supply device; a retaining frame (4) is further included, the retaining frame (4) being arranged in the detection space and being fixedly arranged on the inner side wall of the support seat (1), the retaining frame (4) having a groove (41) for supporting and limiting the heating element (3); and a detection method using the detection device is provided, the detection method comprising the following steps: installing the heating element (3) into the detection space of the support seat (1), so that one end of the heating element (3) is in sealed communication with the support seat (1) and the other end of the heating element (3) is in sealed abutment with the pressing element (6). ​ ​ ​ ​ ​ 2. The detection device of claim 1, wherein, ​ 3. The detection device of claim 1, wherein: ​ 4. The detection device of claim 1, wherein, ​ 5. The detection device of claim 4, wherein, ​ 6. The detection device of claim 1, wherein, ​ 7. A method of detecting pressure-bearing performance, characterized by, ​ ​ Moving the pressing member (6) to make both ends of the heating member (3) abut against the support seat (1) and the pressing member (6) respectively; Pressurizing the heating member (3) by making pressure medium enter the internal space of the heating member (3) until the pressure reaches a preset pressure; Determining whether the heating member (3) is damaged; If yes, obtaining the instantaneous pressure when the heating member (3) is damaged and storing it; If no, starting pressure maintaining after the pressure reaches the preset pressure, and obtaining the pressure of the heating member (3) during pressure maintaining and storing it.

8. A cold-heat shock performance detection method, characterized in that, The detection method comprises: Installing the heating member (3) into the detection space of the support seat (1) to make one end of the heating member (3) in sealing communication with the support seat (1) and the other end of the heating member (3) in sealing abutment against the pressing member (6); Moving the pressing member (6) to make both ends of the heating member (3) lock against the support seat (1) and the pressing member (6) respectively; Heating the heating member (3) until a first preset temperature is reached; Cooling the heating member (3), and if the heating member (3) is damaged, obtaining the instantaneous temperature value when the heating member (3) is damaged and storing it.

9. The cold-heat shock property detection method according to claim 8, wherein The heating of the heating member (3) comprises: Making heating medium enter the internal space of the heating member (3) to heat the heating member (3), or connecting the heating element of the heating member (3) to heat the heating member (3).

10. The cold-heat shock property detection method according to claim 9, wherein The cooling of the heating member (3) comprises: Making cooling medium enter the internal space of the heating member (3) to cool the heating member (3), or cooling the outer surface of the heating member (3).

11. The cold-heat shock property detection method according to claim 10, wherein Cycling heating and cooling until the number of heating and cooling reaches a preset number.

12. A dry boil performance detection method, characterized by, The detection method comprises: Installing the heating member (3) into the detection space of the support seat (1) to make one end of the heating member (3) in sealing communication with the support seat (1) and the other end of the heating member (3) in sealing abutment against the pressing member (6); Moving the pressing member (6) to make both ends of the heating member (3) lock against the support seat (1) and the pressing member (6) respectively; Heating the heating member (3) at a preset time and a second preset temperature; Cooling the heating member (3) after heating is completed; Observing whether the heating member (3) is damaged during heating, during cooling and after cooling, and obtaining the voltage, current and resistance value of the heating member (3) after cooling.

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