[0016] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0017] combine Figure 1-2 , The present invention includes flange A group 3, inflation valve 4, flange B group 5, rubber hose 8, pipe box 9 and so on. The material of the rubber hose 8 is nitrile rubber and it is arranged in a cylindrical structure. The nitrile rubber is processed into a shape with a thickness of 2mm in the middle and a thickness of 3mm at both ends. The pulsating liquid responds sensitively, and the thickening at both ends is conducive to fixing the rubber hose 8, which can ensure the structural strength of the rubber hose 8. Both sides of the rubber hose are connected with screw heads, which can be matched with the threaded holes on the flange A group 3 and the flange B group 5. When installing, polyethylene tape must be wrapped inside the thread to ensure sealing. When installing flange A group 3 and flange B group 5, gaskets should be installed for sealing. This gasket seal is easy to disassemble and can adapt to various complex working conditions. At the same time, it has the function of self-tightening sealing, which can realize two-way sealing, can achieve no leakage during static sealing, and can also make up for certain sealing surface processing defects during work.
[0018] The device can be installed on the cooling water pipeline that needs to realize the noise reduction function, and the original condenser head can be improved according to the invention, so as to realize the functions of space saving and vibration reduction and noise reduction.
[0019] For this kind of sound-absorbing head, the most important sound-absorbing element is the rubber hose 8, and the selection of the Young's modulus and density of the rubber hose 8 is very important, because nitrile rubber has a small Young's modulus, high resistance It has the characteristics of good heat resistance, strong adhesion and sensitive response to small pressure deformation, so nitrile rubber is selected as the material of the rubber hose 8 in this device. It is beneficial for the rubber hose 8 to respond sensitively to the pulsating liquid in the pipeline. The two ends of the rubber hose are 3mm thick, which requires a certain structural strength. The connection method of the industrial oil hose is adopted: the rubber hose 8 is made at both ends There are bolt heads, and the corresponding circular holes on flange A group 3 and flange B group 5 have internal threads, and the rubber hose 8 surface layer is wrapped with metal wire, which not only ensures sealing but also has structural strength.
[0020] For this kind of condenser head structure with noise reduction function, the rubber hose 8 must expand and contract within a certain range, which can not only reduce the fluid pressure pulsation in the tube, but also ensure the support rigidity.
[0021] The purpose of the present invention is achieved like this: it is made up of two groups of flanges, pipe box 9 and head 7, and the inside of pipe box forms a closed chamber. Flange A group 3 is fixed to the condenser body through bolts, and flange B group 5 connects the tube box and the head. The two ends of the rubber hose 8 in the tube box are respectively sleeved on two sets of flanges, and the small holes on the two sets of flanges are connected one by one. The cooling water flowing in from the outside enters the rubber hoses 8 evenly through the flange B group 5, and then flows into the condenser body. An inflation valve 4 is arranged above the closed chamber, and the pressure in the chamber can be adjusted to change the rigidity of the rubber hose as required. Through such a design, the present invention can not only effectively suppress the noise generated by the fluid in the tube, but also reduce the pressure pulsation of the inlet fluid through the rubber hose, thereby suppressing the vibration of the heat exchange tube in the condenser body.
[0022] As a condenser head structure with noise reduction function of the present invention: the rubber hose 8 is the core component for absorbing the pressure pulsation in the tube, and the rubber hose 8 is an elastic compensating element that can freely expand and contract, and has reliable operation and excellent performance. Excellent, compact structure and other advantages. Since the rubber hose 8 has the property of effective expansion and deformation, it can be used to absorb the deformation of the pipeline due to pressure changes and vibrations, and can absorb the displacement caused by the deformation, so as to achieve the functions of absorbing vibration and reducing noise.
[0023] As a condenser head structure with noise reduction function of the present invention: the chamber is pre-charged with gas whose pressure is 80% of the static pressure in the cooling water pipeline. In actual operation, the chamber can be filled with gases of different pressures according to the different static pressures of the pipelines, so as to attenuate the pipeline pulsation of different static pressures.
[0024] As a condenser head structure with noise reduction function of the present invention: the rubber hose 8 must have a certain support stiffness, so it is necessary to wrap the metal wire mesh outside the rubber hose to prevent the inflation pressure from being too high or too low. Rubber hose 8 deformation is excessive, destroys material.
[0025] In the present invention, the purpose of installing the rubber hose 8 in the condenser head is to achieve vibration and noise reduction under the premise of saving the space in the cabin. For the fluid in the pipe, it is only equivalent to adding a section of stroke, and will not Generate excessive drag loss.
[0026] A condenser head structure with noise reduction function of the present invention comprises flange A group 3, flange B group 5, rubber hose 8 and pipe box (9). When the cooling water flows into the pipe box (9) from the inlet, it will first flow through the flange group B (5), and then flow into the condenser body through the rubber hose (8) and flange A group (3). When the incoming flow passes through the rubber hose 8, due to the elastic deformation of the rubber hose 8, the pressure pulsation in the fluid will cause the hose to vibrate slightly, consume the energy of the pressure pulsation, and realize the suppression of the pressure pulsation of the flow in the tube, thereby also The flow noise in the pipe will be reduced.
[0027] If there is no rubber hose 8, when the cooling water flows into the condenser body from flange B group 5, the pressure pulsation of the flow in the tube will drive the heat exchange tube to vibrate, on the one hand, this will aggravate the collision between the heat exchange tube and the support plate And friction, reducing the service life of the heat exchange tube; on the one hand, the flow noise generated by the pressure pulsation will also diffuse through the heat exchange tube, affecting the quietness requirements of the equipment. After the rubber hose 8 is added, the rubber hose will produce slight elastic deformation and vibration, which weakens the propagation of pressure pulsation and realizes the effect of suppressing pressure pulsation.
[0028] Since the rubber hose 8 is required to have a certain degree of elastic expansion and support rigidity, combined with the installation requirements of the condenser, the material of the rubber hose 8 is Nitrile Rubber, and the outside is covered with wire mesh to maintain the support rigidity. Both ends of the rubber hose 8 are fixed in the pipe box by a hose joint. In this way, the expansion and contraction performance of the rubber hose 8 can be brought into play, and the demand for support rigidity can also be met.
[0029] The end faces of the flanges A and B groups are all processed with round holes, and the bosses on the round holes are equipped with hose connectors for fixing the rubber hoses 8 . Flange A group 3 connects the condenser body and the tube box through bolt connection, and flange B group 5 also fixes the tube box and the head together through bolt connection.
[0030] Flange A3, group B 5 and pipe box 9 form a closed chamber, and an air charging valve 4 is installed above the pipe box 9 to adjust the pressure in the chamber according to needs, so that the internal and external pressure of the rubber hose can be better matched, which can meet the requirements of the rubber hose. The rigidity requirements of the hose 8 can also play a role in suppressing pressure pulsation.
[0031] The present invention provides a condenser head structure with noise reduction function, which is composed of two sets of flanges, a pipe box 9 and a head 7, and a closed chamber is formed inside the pipe box. Flange A group 3 is fixed to the condenser body through bolts, and flange B group 5 connects the tube box and the head. The two ends of the rubber hose 8 in the tube box are respectively sleeved on two sets of flanges, and the small holes on the two sets of flanges are connected one by one. The cooling water flowing in from the outside enters the rubber hoses 8 evenly through the flange B group 5, and then flows into the condenser body. An inflation valve 4 is arranged above the closed chamber, and the pressure in the chamber can be adjusted to change the rigidity of the rubber hose as required. Through such a design, the present invention can not only effectively suppress the noise generated by the cooling water at the inlet end of the condenser, but also reduce the pressure pulsation of the inlet fluid through the rubber hose 8 . Moreover, due to the change of the structural acoustic impedance, the sound wave is reflected, and the noise propagating downstream is controlled, thereby suppressing the vibration of the heat exchange tube in the condenser body.
