Automatic sealing and connecting device for solar vacuum explosion-proof pipe

Abstract

The utility model provides an automatic sealing and connecting device for a solar vacuum explosion-proof tube, which comprises a connecting bracket, an M-shaped silica gel elastic bowl, a silica gel hollow umbrella-shaped sealing petal and a solar vacuum tube and is made of a flexible deformation material. The automatic sealing and connecting device for the solar vacuum explosion-proof pipe can overcome the defects of an existing solar heat collector, and pressure difference is formed by utilizing the stress area proportion of small flow during operation in the solar vacuum pipe and large flow after pressure loss of a solar heat collector system. Due to the material, the structure and the combination of the flexible deformation material reset adjusting system, the flexible deformation material reset adjusting system has the advantages of being high in cost performance, easy to install, long in accessory service life, capable of reducing operation and maintenance cost and accidental property loss for users, capable of saving more energy and reducing emission.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of solar energy collector accessories, more particularly, the utility model relates to an automatic sealing and connecting device for a solar vacuum explosion-proof pipe. BACKGROUND

[0002] Solar vacuum tubes have been developed in China for more than thirty years. Single-group water heaters and commercial multi-group collector boxes made of solar vacuum tubes have been widely used in China, bringing great convenience to people's life and commercial hot water, and making great contribution to energy saving and emission reduction in China. The composition of a solar collector includes multiple pipes and one pipe. The multiple solar vacuum tubes are connected in pairs and in parallel to form a collector box, and the connection is sealed by a ring-shaped sealing ring. The operating principle of the solar collector is that the double-layer glass tube is evacuated in the middle, the inner glass is coated with a metal film heat-absorbing layer, and the outer layer is transparent and transmits light. The heat-absorbing layer transports heat to the heat storage tank through the collector. There is a system defect in the entire solar collector system structure that has not been solved so far, which is the leakage of heat transfer medium after the solar vacuum tube explosion. The reasons for the leakage of heat transfer medium include the impact of cold heat transfer medium and hot solar vacuum tube, self-explosion of the solar vacuum tube, external force, and freezing explosion of the heat transfer medium in the system in winter. This leads to the loss of the heat transfer medium in the solar collector system and the inability to continue using it. Especially in the winter, it is difficult to repair and causes great peripheral loss and cannot be used. This causes great inconvenience to users. Some accessories that prevent the leakage of heat transfer medium from the collector box of the solar collector when the solar vacuum tube breaks have appeared in the market. The common leak-proof joint is usually installed at the end of the solar vacuum tube inside, but it cannot be used for all solar vacuum tubes. Currently, the leak-proof joint needs to be used with a specific medium outlet and solar vacuum tube. This design makes many types of solar collectors incompatible. At the same time, it is difficult to find suitable replacement accessories once one end of the solar vacuum tube is damaged. The existing products on the market have complex structures, high costs, difficult installation, short service life, easy failure, and are not easy to maintain.

[0003] To solve this problem, we have designed an automatic sealing device to prevent the leakage of heat transfer medium from the collector box of the solar collector when the solar vacuum tube explodes. After improvement, not only can it greatly reduce the problem of leakage of heat transfer medium caused by damage to the solar vacuum tube, but also can reduce the maintenance difficulty and cost of users, especially in extremely cold environments in winter. The use of the utility model can improve user experience and product competitiveness. SUMMARY

[0004] The present invention provides an automatic sealing connection device for solar vacuum explosion-proof tubes. The device is made of a flexible deformable material. This device overcomes the shortcomings of existing solar collectors by utilizing the pressure difference created by the ratio of the small flow rate inside the solar vacuum tube during operation to the large flow rate after the solar collector system loses pressure. This pressure difference acts on the flexible deformable material to reset and adjust the system's sealing and opening. Due to its material, structure, and assembly, this invention offers high cost-effectiveness, simple installation, and a longer service life for accessories, reducing operating and maintenance costs and accidental property damage for users, while providing greater energy-saving and emission-reduction benefits.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model discloses an automatic sealing connection device for a solar vacuum explosion-proof tube, comprising a connecting bracket, an M-shaped silicone elastic bowl, a silicone hollow umbrella-shaped sealing flap, and a solar vacuum tube. The connecting bracket is an integral ring formed by injection molding of a lower sleeve, a lower limit buckle, and a sealing ring. The connecting bracket has multiple upper constant pressure channels, and its structure forms an inner support space. The M-shaped silicone elastic bowl consists of an elastic wall, an upper limit buckle, and a connecting protrusion. The connecting protrusion is located at the lower center of the elastic wall of the M-shaped silicone elastic bowl. The silicone hollow umbrella-shaped sealing flap consists of a sealing wall and an upper center locking position at the center of the sealing wall. A buoyancy cavity is provided at the center of the silicone hollow umbrella-shaped sealing flap. The upper limit buckle of the M-shaped silicone elastic bowl is concentric with the connecting bracket and placed in the annular space within the outer groove of the lower limit buckle of the connecting bracket. The M-shaped silicone elastic bowl is M-shaped, and the connecting protrusion at the lower center of the M-shaped silicone elastic bowl is placed within the upper center locking position of the silicone hollow umbrella-shaped sealing flap. The solar vacuum tube is concentrically mounted inside the lower sleeve.

[0007] Preferably, the connecting bracket, M-shaped silicone elastic bowl, and silicone hollow umbrella-shaped sealing flap of the automatic sealing connection device for solar vacuum explosion-proof tube of this utility model are made of flexible deformable materials.

[0008] The beneficial effects of this utility model are:

[0009] I. The automatic sealing connection device for solar vacuum explosion-proof tubes of this utility model consists of a connecting bracket, an M-shaped silicone elastic bowl, a silicone hollow umbrella-shaped sealing flap, and a solar vacuum tube, which greatly reduces the leakage problem caused by damage to the solar vacuum tube.

[0010] II. The automatic sealing connection device for solar vacuum explosion-proof tubes of this utility model consists of a connecting bracket, an M-shaped silicone elastic bowl, a silicone hollow umbrella-shaped sealing flap, and a solar vacuum tube. This structure makes this utility model cost-effective, easy to install, and has a longer service life for its accessories.

[0011] Third, the automatic sealing connecting device of solar vacuum explosion-proof pipe of the utility model is composed of the connecting support, the M-shaped silica gel elastic bowl, the silica gel hollow umbrella-shaped sealing petal and the solar vacuum tube, which reduces the operation and maintenance cost and accidental property loss of users, and has the advantages of energy saving and emission reduction. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the front view structural schematic diagram of the automatic sealing connecting device of solar vacuum explosion-proof pipe of the utility model.

[0013] Figure 2 is the side view structural schematic diagram of the automatic sealing connecting device of solar vacuum explosion-proof pipe of the utility model.

[0014] Figure 3 is the cross-sectional view structural schematic diagram of the automatic sealing connecting device of solar vacuum explosion-proof pipe of the utility model.

[0015] Figure 4 is the cross-sectional view structural schematic diagram of the connecting support of the utility model.

[0016] Figure 5 is the cross-sectional view structural schematic diagram of the M-shaped silica gel elastic bowl of the utility model.

[0017] Figure 6 is the cross-sectional view structural schematic diagram of the silica gel hollow umbrella-shaped sealing petal of the utility model.

[0018] Figure 7 is the flow direction schematic diagram of the heat-conducting medium in normal operation of the utility model.

[0019] Figure 8 is the flow direction schematic diagram of the heat-conducting medium after the solar vacuum tube of the utility model is damaged.

[0020] Figure 9 is the cross-sectional view structural schematic diagram of the M-shaped silica gel elastic bowl and the silica gel hollow umbrella-shaped sealing petal of the connecting support after the solar vacuum tube of the utility model is damaged.

[0021] In the drawings, the utility model contains the connecting support 1, the M-shaped silica gel elastic bowl 2, the silica gel hollow umbrella-shaped sealing petal 3, the solar vacuum tube 4, the lower sleeve 11, the upper constant-pressure channel 12, the lower limiting buckle 13, the inner support space 14, the sealing ring buckle 15, the elastic wall 21, the upper limiting buckle 22, the connecting protrusion 23, the sealing wall 31, the upper center clamping position 32 and the buoyancy cavity 33. DETAILED DESCRIPTION

[0022] The utility model will be further described in combination with the drawings as follows:

[0023] The utility model discloses a kind of automatic sealing connection devices of solar vacuum explosion-proof pipe, which is composed of connecting bracket 1, M-type silica gel elastic bowl 2, silica gel hollow umbrella-shaped sealing petal 3 and solar vacuum tube 4.The connecting bracket 1 is integrally circular by injection molding from lower sleeve 11, lower limit buckle 13 and sealing ring buckle 15.The connecting bracket 1 is provided with multiple upper constant-pressure channels 12, and the structure of the connecting bracket 1 forms an inner support space 14.The M-type silica gel elastic bowl 2 is composed of elastic wall 21, upper limit buckle 22 and connecting protrusion 23.The connecting protrusion 23 is arranged at the lower center of the elastic wall 21 of the M-type silica gel elastic bowl 2.The silica gel hollow umbrella-shaped sealing petal 3 is composed of sealing wall 31 and upper center clamping 32 at the center of the sealing wall 31.The center of the silica gel hollow umbrella-shaped sealing petal 3 is provided with a buoyancy cavity 33.The upper limit buckle 22 of the M-type silica gel elastic bowl 2 is concentric with the connecting bracket 1 and placed in the annular space in the outer clamping groove of the lower limit buckle 13 of the connecting bracket 1.The M-type silica gel elastic bowl 2 is in M shape.The connecting protrusion 23 at the lower center of the M-type silica gel elastic bowl 2 is placed in the upper center clamping 32 of the silica gel hollow umbrella-shaped sealing petal 3.The solar vacuum tube 4 is concentrically arranged in the lower sleeve 11.

[0024] In the normal operation of the heat-conducting medium system in the header of the solar collector, the pressure of the heat-conducting medium in the header is balanced with the pressure of the heat-conducting medium in the solar vacuum tube 4.The heat-conducting medium flows through the upper constant-pressure channels 12, and the heat-conducting medium flows through the upper constant-pressure channels 12 of the connecting bracket 11 to communicate with the solar vacuum tube 4 for heat exchange.When the solar vacuum tube 4 in the lower sleeve 11 of the connecting bracket 1 bursts and loses pressure, the M-type silica gel elastic bowl 2 deforms due to the greater pressure on its upper stress surface.The M-type silica gel elastic bowl 2 is displaced to the side of the solar vacuum tube 4 that leaks heat-conducting medium.The displacement force of the M-type silica gel elastic bowl 2 is transmitted to the silica gel hollow umbrella-shaped sealing petal 3 through the connecting protrusion 23.The silica gel hollow umbrella-shaped sealing petal 3 is displaced to the direction of the solar tube 4 until it is displaced to the position of the sealing ring buckle 15 to seal and prevent the leakage of heat-conducting medium, thereby playing a sealing role and providing time for operation and maintenance.

[0025] When the heat conducting medium system of the solar collector header enters the summer and does not need to be used, the solar vacuum tube 4 can be uniformly replaced, or it can be replaced at any time. When the perfect solar vacuum tube is inserted into the header, because the pressure of the external force inserted is greater than the pressure in the header, the pressure in the solar vacuum tube 4 will push the silica gel hollow umbrella-shaped sealing flap 3 and the M-shaped silica gel elastic bowl 2 to move upward. The elastic stress of the M-shaped silica gel elastic bowl 2 when the heat conducting medium is sealed, the air buoyancy in the silica gel hollow umbrella-shaped sealing flap 3 and the pressure when the solar vacuum tube 4 is inserted, the three forces act on the silica gel hollow umbrella-shaped sealing flap 3 at the same time, so that the silica gel hollow umbrella-shaped sealing flap 3 returns to the original installation position. The heat conducting medium of the heat conducting medium system of the solar collector header conducts the solar vacuum tube 4, the pressure in the header of the solar collector is balanced with the pressure in the solar vacuum tube, and the solar collector system operates normally.

[0026] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any slight modification, equivalent replacement and improvement made according to the technical essence of the present application to the above embodiment shall be included in the protection scope of the technical scheme of the present application.

Claims

1. An automatic sealing connection device for a solar vacuum explosion-proof tube, comprising a connecting bracket (1), an M-shaped silicone elastic bowl (2), a silicone hollow umbrella-shaped sealing flap (3), and a solar vacuum tube (4), characterized in that, The connecting support (1) is integrally annular by injection molding of a lower sleeve (11), a lower limit buckle (13), and a sealing ring buckle (15), the connecting support (1) is provided with a plurality of upper constant pressure channels (12), the structure of the connecting support (1) forms an inner support space (14), the M-shaped silica gel elastic bowl (2) is composed of an elastic wall (21), an upper limit buckle (22), and a connecting protrusion (23), the connecting protrusion (23) is arranged at the lower center of the elastic wall (21) of the M-shaped silica gel elastic bowl (2), the silica gel hollow umbrella-shaped sealing flap (3) is composed of a sealing wall (31) and an upper center clamping (32) at the center of the sealing wall (31), the silica gel hollow umbrella-shaped sealing flap (3) is provided with a buoyancy cavity (33) at the center, the upper limit buckle (22) of the M-shaped silica gel elastic bowl (2) is concentric with the connecting support (1) and is placed in the annular space in the outer clamping groove of the lower limit buckle (13) of the connecting support (1), the M-shaped silica gel elastic bowl (2) is M-shaped, the connecting protrusion (23) at the lower center of the M-shaped silica gel elastic bowl (2) is placed in the upper center clamping (32) of the silica gel hollow umbrella-shaped sealing flap (3), and the solar vacuum tube (4) is concentrically arranged in the lower sleeve (11).

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