Detection device for ground source heat pump unit

Abstract

The utility model provides a detection device for a ground source heat pump unit, which belongs to the technical field of ground source heat pumps and comprises two sealing joints and a detection component, the detection component is arranged in the middle of one of the sealing joints and comprises a detection cylinder arranged in one of the sealing joints, a telescopic column is arranged in the middle of the detection cylinder, and the telescopic column is arranged in the middle of the detection cylinder. A sealing gasket is arranged at the bottom of the telescopic column; according to the utility model, simple and visual leakage indication can be provided, and the detection convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ground source heat pump technical field, concretely relates to a detection device for ground source heat pump unit. BACKGROUND

[0002] Ground source heat pump is a kind of equipment using the underground stable temperature heat energy to heat and cool.It exchanges heat in the underground buried pipe system by circulating medium, to realize efficient energy-saving air conditioning and heating.The performance and efficiency of ground source heat pump system depend on the collaborative work of its components, especially the pipe sealing of underground buried pipe heat exchanger.The defects of pipe sealing can cause system performance to decline, even completely fail.Therefore, detecting the pipe sealing of ground source heat pump system is a necessary link to ensure normal operation and maintenance of the system.

[0003] At present, the detection methods of ground source heat pump pipe sealing mainly include pressure test, vacuum test and leakage detection, etc.These methods can effectively find the leakage points of pipe system, and these devices are precise and complex, and the use steps are cumbersome and not easy to operate, suitable for comprehensive detection during installation;However, after the installation of ground source heat pump is completed, the stability is high, and when the installed ground source heat pump is detected regularly, it is not necessary to detect too complicatedly and precisely, so a monitoring device that is easy to use is needed.

[0004] For example, a ground source heat pump joint sealing effect detection device is proposed in the patent with publication number CN221630941U, water is injected into the sealing space to submerge the joint connection, then gas is blown into one of the ground source heat pump pipes, the gas goes out from the other pipe, and whether there are bubbles in the water flow in the sealing space is observed to determine whether there is a problem of incomplete sealing at the connection of the two pipe joints, and in the use process of the device, a large amount of water is needed, and it is necessary to pay attention to whether bubbles are generated in the water at all times, so the use steps are relatively cumbersome. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a detection device for ground source heat pump unit, which can provide simple and intuitive leakage indication and improve the convenience of detection.

[0006] To solve the above technical problems, the utility model provides a detection device for ground source heat pump unit, which includes sealing joint and detection assembly, and the sealing joint is two, and the middle part of one of the sealing joints is provided with detection assembly, and the detection assembly includes detection cylinder fixedly connected to one of the sealing joints, and the middle part of the detection cylinder is slidably connected with telescopic column, and the bottom of the telescopic column is fixedly connected with sealing pad, and the sealing pad is slidably connected with the middle part of the detection cylinder, which is simple to operate, and provides intuitive leakage indication by the movement of sealing pad and telescopic column, and improves the convenience of detection.

[0007] The inner wall of the detection cylinder is fixedly connected with a limiting block; that is, to ensure that the sealing pad is in the correct position.

[0008] The bottom of the limiting block is fixedly connected with an annular clamping strip, and the top of the sealing pad is provided with an annular groove corresponding to the annular clamping strip; that is, to prevent the medium in the heat pump pipeline from leaking.

[0009] The middle part of the telescopic column is sleeved with a limiting spring; that is, to provide elastic support and keep the sealing pad stable.

[0010] The top of the detection cylinder is provided with an identification assembly, which comprises a prompt column fixedly connected to the top of the telescopic column; that is, to provide intuitive leakage indication.

[0011] The identification assembly further comprises a limiting ring provided at the top of the detection cylinder, and the two sides of the prompt column are both connected with a first connecting rod through a hinge, the middle part of the prompt column is slidably connected with a support plate, and the first connecting rod is connected with a second connecting rod through a hinge between one end and the support plate, and the column body at the bottom of the support plate is sleeved with a lifting spring; that is, to keep the indication persistent through the limiting ring.

[0012] The inner wall of the sealing joint is fixedly connected with a plurality of sealing rings arranged along the axis of the sealing joint; that is, to maintain the sealing performance when in contact with the heat pump pipeline.

[0013] Compared with the prior art, the present application has the following at least one beneficial technical effect:

[0014] 1. As the leaked medium increases, the sealing pad will eventually be lifted, causing the sealing pad to rise and push the telescopic column up, allowing the staff to quickly and intuitively detect the gas leakage. The device can effectively detect the sealing performance of the ground source heat pump pipeline, and the operation is simple. The movement of the sealing pad and the telescopic column provides intuitive leakage indication, improving the convenience of detection.

[0015] 2. Only when the pressure borne by the sealing block is greater than the elastic force of the limiting spring will the sealing block drive the telescopic column to move away from the heat pump pipeline. The limiting spring greatly improves the accuracy of the judgment and reduces the misjudgment.

[0016] 3. After the medium in the heat pump pipeline stops conveying and the pressure decreases, the telescopic column and the sealing pad will not move down, and the identification assembly will not lose its identification function. The device effectively maintains the persistence of the leakage indication, ensures that the detection device can continuously provide reliable indication after a leakage event occurs, and confirms and handles the leakage problem until the maintenance personnel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the detection device for the ground source heat pump unit;

[0018] Figure 2 It is the structural schematic view of the detection assembly of the utility model;

[0019] Figure 3 It is the structural schematic view of the utility model A place amplification;

[0020] Figure 4 It is the structural schematic view of the utility model B place amplification.

[0021] Mark explanation:

[0022] 100, sealing joint; 101, sealing ring;

[0023] 200, detection assembly; 201, detection cylinder; 202, telescopic column; 203, sealing pad; 204, limiting block; 205, annular clamping strip; 206, annular groove; 207, limiting spring;

[0024] 300, identification assembly; 301, prompt column; 302, limiting ring; 303, first connecting rod; 304, second connecting rod; 305, lifting spring; 306, support plate; Specific implementation

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the drawings of the embodiments of the utility model with the specific implementation of the embodiments of the utility model. Figures 1-4 The technical scheme of the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art belong to the scope of the utility model protection.

[0026] As Figures 1-4 The embodiment provides a kind of detection device for ground source heat pump unit, including sealing joint 100 and detection assembly 200, sealing joint 100 is two, two sealing joint 100 is connected by bolt, and the middle part of one of sealing joint 100 is provided with detection assembly 200, detection assembly 200 includes the detection cylinder 201 of fixed connection in one of sealing joint 100, the middle part of detection cylinder 201 is slidably connected with telescopic column 202, and the bottom of telescopic column 202 is fixedly connected with sealing pad 203, the middle part of sealing pad 203 and detection cylinder 201 is slidably connected;

[0027] When the detection maintenance is carried out, the two sealing joints 100 are buckled at the connection of the heat pump pipeline, the sealing joint 100 is connected tightly with the heat pump pipeline, then the heat pump pipeline is aerated, at this time, if leakage occurs, the leaked medium will enter the detection cylinder 201, then with the continuous increase of the leaked medium, the sealing pad 203 will finally be lifted up, the sealing pad 203 is lifted up, and the telescopic column 202 is lifted up, so that the staff can quickly and intuitively find the leakage of the gas. Through the device, the sealing property of the ground source heat pump pipeline can be effectively detected, and the operation is simple, without using a large amount of water resources, and without continuously observing the bubble generation condition. The movement of the sealing pad 203 and the telescopic column 202 provides an intuitive leakage indication, which not only improves the convenience of detection, but also reduces the environmental impact that may be caused in the detection process;

[0028] The limiting block 204 is fixedly connected to the inner wall of the detection cylinder 201, and the inner diameter of the limiting block 204 is smaller than the diameter of the sealing block; Figure 2 、 3 As shown in

[0029] The limiting block 204 is fixedly connected to the inner wall of the detection cylinder 201, and the inner diameter of the limiting block 204 is smaller than the diameter of the sealing block;

[0030] With the continuous lifting of the sealing block, the sealing block finally abuts against the limiting block 204, the limiting of the sealing block is realized, and the sealing is realized in cooperation with the sealing block, so that the leakage of various media in the heat pump pipeline is avoided;

[0031] The annular clamping strip 205 is fixedly connected to the bottom of the limiting block 204, and the top of the sealing pad 203 is provided with an annular groove 206 corresponding to the annular clamping strip 205, the annular groove 206 and the annular clamping strip 205 are arranged in position correspondence, and the diameters of the annular groove 206 and the annular clamping strip 205 are consistent; Figure 2 、 3 As shown in

[0032] The annular clamping strip 205 is fixedly connected to the bottom of the limiting block 204, and the top of the sealing pad 203 is provided with an annular groove 206 corresponding to the annular clamping strip 205, the annular groove 206 and the annular clamping strip 205 are arranged in position correspondence, and the diameters of the annular groove 206 and the annular clamping strip 205 are consistent;

[0033] When the sealing block contacts the limiting block 204, the annular clamping strip 205 cooperates with the annular groove 206, so as to fix the position of the sealing pad 203, prevent the displacement of the sealing pad 203 due to the impact of the leaked medium during the detection process, and further improve the sealing property to prevent the leakage of a large amount of medium.

[0034] The limiting spring 207 is sleeved on the middle part of the telescopic column 202, and the diameter of the limiting spring 207 is smaller than the inner diameter of the limiting block 204; Figure 2 、 3 As shown in

[0035] The limiting spring 207 is sleeved on the middle part of the telescopic column 202, and the diameter of the limiting spring 207 is smaller than the inner diameter of the limiting block 204;

[0036] When the device is not working, the elastic force of the limiting spring 207 will extrude the sealing block, so that the sealing block is always located on the side close to the heat pump pipeline, avoiding the situation that the misjudgment is caused by the shaking of the position of the sealing block. Only when the pressure borne by the sealing block is greater than the elastic force of the limiting spring 207, the sealing block will drive the telescopic column 202 to move away from the heat pump pipeline, thereby greatly improving the accuracy of judgment and reducing misjudgment.

[0037] As shown in Figure 2 、 4 ,

[0038] The top of the detection cylinder 201 is provided with an identification assembly 300, which comprises a prompt column 301 fixedly connected to the top of the telescopic column 202.

[0039] When the telescopic column 202 moves upward, the prompt column 301 will be pushed upward to provide an intuitive visual signal indicating the occurrence of leakage, so as to be quickly identified in a complex on-site environment.

[0040] As shown in Figure 2 、 4 ,

[0041] The identification assembly 300 further comprises a limiting ring 302 arranged at the top of the detection cylinder 201, both sides of the prompt column 301 are hingedly connected with first connecting rods 303, the middle part of the prompt column 301 is slidingly connected with a support plate 306, both ends of the first connecting rods 303 and the support plate 306 are hingedly connected with second connecting rods 304, the column bodies at the bottom of the support plate 306 are sleeved with lifting springs 305, and the diameter of the lifting springs 305 is smaller than the diameter of the support plate 306.

[0042] When the leakage does not occur, the telescopic column 202 and the sealing gasket 203 continuously apply force to the side away from the limiting ring 302 under the elastic force of the limiting spring 207, at this time, the prompt column 301 also moves, and the first connecting rods 303 and the second connecting rods 304 are inside the limiting ring 302 at this time, the lifting springs 305 simultaneously apply force, so that the support plate 306 applies upward force to lift the second connecting rods 304, and the first connecting rods 303 move downward with the prompt column 301, at this time, the bend at the junction of the first connecting rods 303 and the second connecting rods 304 will tightly fit with the inner wall of the limiting ring 302.

[0043] When the leakage occurs, the sealing gasket 203 is lifted, the limiting spring 207 is lifted, the prompt column 301 drives one end of the first connecting rod 303 to rise, in this figure, the connection between the first connecting rod 303 and the second connecting rod 304 is stretched straight, the elastic force of the lifting spring 305 is released, the support plate 306 and the second connecting rod 304 continue to move upwards, and finally the main bodies of the first connecting rod 303 and the second connecting rod 304 are lifted to the top of the limiting ring 302, at this time the inner wall of the limiting ring 302 cannot limit the first connecting rod 303 and the second connecting rod 304, and with the complete release of the elastic force of the lifting spring 305, the connection between the second connecting rod 304 and the first connecting rod 303 is pushed to bend more, until the bending part exceeds the edge of the limiting ring 302, at this time the bending part of the first connecting rod 303 and the second connecting rod 304 is limited by the lower limit of the limiting ring 302, so that the prompt column 301, the telescopic column 202 and the sealing gasket 203 are all limited, so that the medium in the heat pump pipeline stops conveying and the pressure decreases, the telescopic column 202 and the sealing gasket 203 still cannot move downward, and the identification assembly 300 does not lose the identification function, effectively maintaining the persistence of the leakage indication, and ensuring that the detection device can continuously provide reliable indication after the leakage event occurs until the maintenance personnel confirms and handles the leakage problem.

[0044] The sealing ring 101 is as shown in Figure 1

[0045] The inner wall of the sealing joint 100 is fixedly connected with a plurality of sealing rings 101 arranged in an array along the axis of the sealing joint 100.

[0046] The sealing ring 101 is made of a high-temperature-resistant and corrosion-resistant elastic material, so as to ensure that it can maintain stable sealing performance under the operating temperature and pressure of the heat pump system, prevent the medium in the heat pump pipeline from leaking, and the array distribution design of the sealing ring 101 helps to uniformly disperse the pressure and reduce the wear of a single sealing ring 101, thereby prolonging the service life of the sealing ring 101.

[0047] Working principle:

[0048] ​Two sealing joints are connected by bolts and buckled at the connecting part of the heat pump pipeline, ensuring that the sealing joint is connected tightly with the heat pump pipeline, after the heat pump pipeline is ventilated, if leakage occurs, the leaked medium will enter the detection cylinder, with the increase of the leaked medium, the sealing gasket is lifted up, thereby pushing the telescopic column to rise, the rising of the telescopic column simultaneously pushes the prompt column to move up, providing an intuitive visual signal to indicate the occurrence of leakage, the sealing gasket rises to be attached with the limiting block, limiting the sealing block, and cooperating with the sealing block to realize sealing, preventing the medium from leaking in large quantities, the annular clamping strip cooperates with the annular groove to fix the position of the sealing gasket, preventing the sealing gasket from being displaced due to the impact of the leaked medium, the elastic force of the limiting spring extrudes the sealing block, so that the sealing block is always located on the side close to the heat pump pipeline, reducing misjudgment, when leakage occurs, the prompt column, the telescopic column and the sealing gasket are limited by the limiting ring, ensuring the persistence of the leakage indication after the medium stops conveying and the pressure decreases.

[0049] In addition, it should be further pointed out that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting" and "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principle of the present application, some improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A detection device for a ground source heat pump unit, characterized by: The utility model provides a sealing joint (100) and detection assembly (200), sealing joint (100) is two, one sealing joint (100) is provided with detection assembly (200) in the middle, detection assembly (200) includes the detection cylinder (201) of being arranged in one sealing joint (100), the middle of detection cylinder (201) is provided with telescopic column (202), the bottom of telescopic column (202) is provided with sealing gasket (203).

2. The detection device for a ground source heat pump unit according to claim 1, characterized in that: The inner wall of the detection cylinder (201) is provided with a limiting block (204).

3. The detection device for a ground source heat pump unit according to claim 2, wherein: The bottom of the limiting block (204) is provided with an annular clamping strip (205), and the top of the sealing gasket (203) is provided with an annular groove (206) corresponding to the annular clamping strip (205).

4. The detection device for a ground source heat pump unit according to claim 2, wherein: The middle of the telescopic column (202) is provided with a limiting spring (207).

5. The detection device for a ground source heat pump unit according to claim 1, wherein: The top of the detection cylinder (201) is provided with an identification assembly (300), and the identification assembly (300) includes a prompt column (301) arranged at the top of the telescopic column (202).

6. The detection device for a ground source heat pump unit according to claim 5, wherein: The identification assembly (300) further includes a limiting ring (302) arranged at the top of the detection cylinder (201), and the two sides of the prompt column (301) are both provided with a first connecting rod (303) through a hinge.

7. The detection device for a ground source heat pump unit according to claim 1, wherein: The middle of the prompt column (301) is provided with a support plate (306), and the first connecting rod (303) is provided with a second connecting rod (304) between one end and the support plate (306). The inner wall of the sealing joint (100) is provided with a plurality of arrayed sealing rings (101).

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